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“Three birds with one stone” nanoplatform: Efficient near‐infrared‐triggered type‑I AIE photosensitizer for mitochondria‐targeted photodynamic therapy against hypoxic tumors (2024)
Journal Article

Currently three major problems seriously limit the practical application of cancer photodynamic therapy (PDT): (i) the hypoxic tumor microenvironment (TME); (ii) low generation efficiency of toxic reactive oxygen species (ROS) in aggregates and (iii)... Read More about “Three birds with one stone” nanoplatform: Efficient near‐infrared‐triggered type‑I AIE photosensitizer for mitochondria‐targeted photodynamic therapy against hypoxic tumors.

Exploring the Impact of the HOMO–LUMO Gap on Molecular Thermoelectric Properties: A Comparative Study of Conjugated Aromatic, Quinoidal, and Donor–Acceptor Core Systems (2024)
Journal Article

Thermoelectric materials have garnered significant interest for their potential to efficiently convert waste heat into electrical energy at room temperature without moving parts or harmful emissions. This study investigated the impact of the HOMO–LUM... Read More about Exploring the Impact of the HOMO–LUMO Gap on Molecular Thermoelectric Properties: A Comparative Study of Conjugated Aromatic, Quinoidal, and Donor–Acceptor Core Systems.

Amphiphilic Polyurethane with Cluster-Induced Emission for Multichannel Bioimaging in Living Cell Systems. (2023)
Journal Article

The development of single-component materials with low cytotoxicity and multichannel fluorescence imaging capability is a research hotspot. In the present work, highly electron-deficient pyrazine monomers were covalently connected into a polyurethane... Read More about Amphiphilic Polyurethane with Cluster-Induced Emission for Multichannel Bioimaging in Living Cell Systems..

Cluster-induced aggregation in polyurethane derivatives with multicolour emission and ultra-long organic room temperature phosphorescence (2023)
Journal Article

Non-conjugated luminescent polymers (NCLPs) have the advantages of simple synthesis, optical tunability, and excellent processability. However, the underlying luminous mechanism in NCLPs remains obscure and it is a considerable challenge to obtain NC... Read More about Cluster-induced aggregation in polyurethane derivatives with multicolour emission and ultra-long organic room temperature phosphorescence.

Structural Diversity in Cyclometalated Diiridium(III) Complexes with Bridging syn and anti μ2‐Oxamidato and μ2‐Dithioxamidato Ligands (2023)
Journal Article

Six new diiridium complexes containing 2-methyl-6-phenylpyridyl as the cyclometalating ligand with a μ2-oxamidato or a μ2-dithioxamidato ligand as the bridge have been synthesized in 60–73 % yields. These complexes were revealed by multinuclear NMR s... Read More about Structural Diversity in Cyclometalated Diiridium(III) Complexes with Bridging syn and anti μ2‐Oxamidato and μ2‐Dithioxamidato Ligands.

Near-Infrared Afterglow ONOO–-Triggered Nanoparticles for Real-Time Monitoring and Treatment of Early Ischemic Stroke (2023)
Journal Article

Early detection and drug intervention with the appropriate timing and dosage are the main clinical challenges for ischemic stroke (IS) treatment. The conventional therapeutic agents relay fluorescent signals, which require real-time external light ex... Read More about Near-Infrared Afterglow ONOO–-Triggered Nanoparticles for Real-Time Monitoring and Treatment of Early Ischemic Stroke.

Electronic Conductance and Thermopower of Cross-Conjugated and Skipped-Conjugated Molecules in Single-Molecule Junctions (2023)
Journal Article

We report a combined experimental and theoretical study of a series of thiomethyl (SMe) anchored cross-conjugated molecules featuring an acyclic central bridging ketone and their analogous skipped-conjugated alcohol derivatives. Studies of these mole... Read More about Electronic Conductance and Thermopower of Cross-Conjugated and Skipped-Conjugated Molecules in Single-Molecule Junctions.

A review of fused-ring carbazole derivatives as emitter and/or host materials in organic light emitting diode (OLED) applications (2023)
Journal Article

This review focuses on fused-ring carbazole derivatives, their molecular design, electronic and photophysical properties, and in particular their applications as the emitter and/or the host material in the emitting layer of organic light emitting dio... Read More about A review of fused-ring carbazole derivatives as emitter and/or host materials in organic light emitting diode (OLED) applications.

Oxidation State Tuning of Room Temperature Phosphorescence and Delayed Fluorescence in Phenothiazine and Phenothiazine‐5,5‐dioxide Dimers (2023)
Journal Article

Heterocyclic dimers consisting of combinations of butterfly-shaped phenothiazine (PTZ) and its chemically oxidized form phenothiazine-5,5-dioxide (PTZ(SO2)) have been synthesized. A twist is imposed across the dimers by ortho-substituents including m... Read More about Oxidation State Tuning of Room Temperature Phosphorescence and Delayed Fluorescence in Phenothiazine and Phenothiazine‐5,5‐dioxide Dimers.

Self-assembled nanoparticles based on cationic mono-/AIE tetra-nuclear Ir(III) complexes: long wavelength absorption/near-infrared emission photosensitizers for photodynamic therapy (2023)
Journal Article

Cyclometalated Ir(III) complexes as photosensitizers (PSs) have attracted widespread attention because of their good photostability and efficient 1O2 production ability. However, their strong absorption in the UV-vis region severely limits their appl... Read More about Self-assembled nanoparticles based on cationic mono-/AIE tetra-nuclear Ir(III) complexes: long wavelength absorption/near-infrared emission photosensitizers for photodynamic therapy.

Fine‐Tuning the Photophysics of Donor‐Acceptor (D‐A 3 ) Thermally Activated Delayed Fluorescence Emitters Using Isomerisation (2022)
Journal Article

Here two D–A3 regioisomers, comprising three dibenzothiophene-S,S-dioxide acceptor units attached to a central triazatruxene core, are studied. Both molecules show thermally activated delayed fluorescence (TADF), however, the efficiency of the TADF m... Read More about Fine‐Tuning the Photophysics of Donor‐Acceptor (D‐A 3 ) Thermally Activated Delayed Fluorescence Emitters Using Isomerisation.

AIE-active Ir(iii) complexes functionalised with a cationic Schiff base ligand: synthesis, photophysical properties and applications in photodynamic therapy (2022)
Journal Article

Photodynamic therapy (PDT) is a promising cancer treatment method. Traditional small-molecule photosensitizers (PSs) suffer from low intersystem crossing (ISC) ability and aggregation-caused quenching (ACQ), which adversely affects the luminous effic... Read More about AIE-active Ir(iii) complexes functionalised with a cationic Schiff base ligand: synthesis, photophysical properties and applications in photodynamic therapy.

Intramolecular Hydrogen Bonding in Thermally Activated Delayed Fluorescence Emitters: Is There Evidence Beyond Reasonable Doubt? (2022)
Journal Article

Intramolecular hydrogen bonding between donor and acceptor segments in thermally activated delayed fluorescence (TADF) materials is now frequently employed to─purportedly─rigidify the structure and improve the emission performance of these materials.... Read More about Intramolecular Hydrogen Bonding in Thermally Activated Delayed Fluorescence Emitters: Is There Evidence Beyond Reasonable Doubt?.

AIE-active iridium(iii) complex integrated with upconversion nanoparticles for NIR-irradiated photodynamic therapy (2022)
Journal Article

The integration of an aggregation induced emission (AIE)-active Ir(III) complex and upconversion nanoparticles (UCNPs) has achieved a NIR-irradiated photosensitizer (PS), UCNPs@Ir-2-N. This PS has satisfactory biocompatibility, excellent phototoxicit... Read More about AIE-active iridium(iii) complex integrated with upconversion nanoparticles for NIR-irradiated photodynamic therapy.

Electrostatic Fermi level tuning in large-scale self-assembled monolayers of oligo(phenylene–ethynylene) derivatives (2022)
Journal Article

Understanding and controlling the orbital alignment of molecules placed between electrodes is essential in the design of practically-applicable molecular and nanoscale electronic devices. The orbital alignment is highly determined by the molecule–ele... Read More about Electrostatic Fermi level tuning in large-scale self-assembled monolayers of oligo(phenylene–ethynylene) derivatives.

Quantum interference dependence on molecular configurations for cross-conjugated systems in single-molecule junctions (2022)
Journal Article

We report a combined experimental and computational study of seven cross-conjugated enediyne derivatives functionalised with a pendant group (diphenyl, 9-fluorenyl, 9-thioxanthene or cyclohexyl) at the central alkene site, and with thiomethyl (SMe) o... Read More about Quantum interference dependence on molecular configurations for cross-conjugated systems in single-molecule junctions.

TADF dendronized polymer with vibrationally enhanced direct spin-flip between charge-transfer states for efficient non-doped solution-processed OLEDs (2022)
Journal Article

A novel type of thermally activated delayed fluorescence (TADF) dendronized polymer was designed and synthesized. Firstly, one side of the asymmetric TADF unit was encapsulated by 3,6-di-tert-butylcarbazole via a conjugated linkage with strong twiste... Read More about TADF dendronized polymer with vibrationally enhanced direct spin-flip between charge-transfer states for efficient non-doped solution-processed OLEDs.

Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes (2022)
Journal Article

Two asymmetric “half-dendronized” and “half-dendronized-half-encapsulated” TADF emitters eliminate degenerate excited states, assuring a solely thermal equilibrium route for an effective spin-flip process. AEE properties can minimize the exciton quen... Read More about Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes.

Supramolecular oligourethane gels as light-harvesting antennae: achieving multicolour luminescence and white-light emission through FRET (2021)
Journal Article

Soft luminescent gel materials have many practical applications due to their excellent solution processability, thixotropic, soft and facile coating performance. Here we have prepared a series of oligourethane (OU)-based gelators with fine-tuned opti... Read More about Supramolecular oligourethane gels as light-harvesting antennae: achieving multicolour luminescence and white-light emission through FRET.

Heteroatom Effects on Quantum Interference in Molecular Junctions: Modulating Antiresonances by Molecular Design (2021)
Journal Article

Controlling charge transport through molecular wires by utilizing quantum interference (QI) is a growing topic in single-molecular electronics. In this article, scanning tunneling microscopy-break junction techniques and density functional theory cal... Read More about Heteroatom Effects on Quantum Interference in Molecular Junctions: Modulating Antiresonances by Molecular Design.

A review of functional linear carbon chains (oligoynes, polyynes, cumulenes) and their applications as molecular wires in molecular electronics and optoelectronics (2021)
Journal Article

Linear, sp-hybridised, 1-dimensional (1D) all-carbon wires are conceptually the simplest p-conjugated organic molecules. Their fundamental experimental and theoretical properties and their materials chemistry applications are under-developed compared... Read More about A review of functional linear carbon chains (oligoynes, polyynes, cumulenes) and their applications as molecular wires in molecular electronics and optoelectronics.

Rational design of iridium–porphyrin conjugates for novel synergistic photodynamic and photothermal therapy anticancer agents (2021)
Journal Article

Near-infrared (NIR) emitters are important probes for biomedical applications. Nanoparticles (NPs) incorporating mono- and tetranuclear iridium(III) complexes attached to a porphyrin core have been synthesized. They possess deep-red absorbance, long-... Read More about Rational design of iridium–porphyrin conjugates for novel synergistic photodynamic and photothermal therapy anticancer agents.

Conformational Dependence of Triplet Energies in Rotationally Hindered N‐ and S‐Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host Materials (2021)
Journal Article

A series of four heterocyclic dimers has been synthesized, with twisted geometries imposed across the central linking bond by ortho‐alkoxy chains. These include two isomeric bicarbazoles, a bis(dibenzothiophene‐S,S‐dioxide) and a bis(thioxanthene‐S,S... Read More about Conformational Dependence of Triplet Energies in Rotationally Hindered N‐ and S‐Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host Materials.

Extended curly arrow rules to rationalise and predict structural effects on quantum interference in molecular junctions (2021)
Journal Article

The ability to easily and reliably predict quantum interference (QI) behaviour would facilitate the design of functional molecular wires with potential applications in switches, transistors and thermoelectric devices. A variety of predictive methods... Read More about Extended curly arrow rules to rationalise and predict structural effects on quantum interference in molecular junctions.

Cyclophane Molecules Exhibiting Thermally Activated Delayed Fluorescence: Linking Donor Units to Influence Molecular Conformation (2020)
Journal Article

The synthetic methodology to covalently link donors to form cyclophane-based thermally activated delayed fluorescence (TADF) molecules is presented. These are the first reported examples of TADF cyclophanes with “electronically innocent” bridges betw... Read More about Cyclophane Molecules Exhibiting Thermally Activated Delayed Fluorescence: Linking Donor Units to Influence Molecular Conformation.

Electronic conductance and thermopower of single-molecule junctions of oligo(phenyleneethynylene) derivatives (2020)
Journal Article

We report the synthesis and the single-molecule transport properties of three new oligo(phenyleneethynylene) (OPE3) derivatives possessing terminal dihydrobenzo[b]thiophene (DHBT) anchoring groups and various core substituents (phenylene, 2,5-dimetho... Read More about Electronic conductance and thermopower of single-molecule junctions of oligo(phenyleneethynylene) derivatives.

Supramolecular oligourethane gel as a highly selective fluorescent “on–off–on” sensor for ions (2020)
Journal Article

Stimuli-responsive supramolecular gels (SRSGs) are an important class of smart materials. It is of practical importance to develop an SRSG which can both detect and remove toxic metal ions. We have designed and synthesized an aggregation induced emis... Read More about Supramolecular oligourethane gel as a highly selective fluorescent “on–off–on” sensor for ions.

Supramolecular Oligourethane Gel with Multicolor Luminescence Controlled by Mechanically Sensitive Hydrogen-Bonding (2020)
Journal Article

We report a new type of mechanically sensitive multicolor luminescent oligourethane gel (OUA-gel). The conformation of the oligomeric chains can be controlled by changing the strength of hydrogen bonds. The optical properties of the oligomers are hig... Read More about Supramolecular Oligourethane Gel with Multicolor Luminescence Controlled by Mechanically Sensitive Hydrogen-Bonding.

Bright red aggregation-induced emission nanoparticles for multifunctional applications in cancer therapy (2020)
Journal Article

Developing multifunctional photosensitizers (PSs) is needed to effectively simplify cancer treatment, but it remains a big challenge. Here, two red-emitting AIE-active, donor–acceptor (D–A) PSs with small ΔEST and their AIE nanoparticles, are rationa... Read More about Bright red aggregation-induced emission nanoparticles for multifunctional applications in cancer therapy.

Balancing charge-transfer strength and triplet states for deep-blue thermally activated delayed fluorescence with an unconventional electron rich dibenzothiophene acceptor (2019)
Journal Article

Manipulation of the emission properties of deep-blue emitters exhibiting thermally activated delayed fluorescence (TADF) through molecular design is challenging. We present an effective strategy to probe deeper into the role of localized (LE) and cha... Read More about Balancing charge-transfer strength and triplet states for deep-blue thermally activated delayed fluorescence with an unconventional electron rich dibenzothiophene acceptor.

Achieving Conformational Control in RTP and TADF Emitters by Functionalization of the Central Core (2019)
Journal Article

Three new symmetrical donor–acceptor–donor (D–A–D)-type molecules were prepared with phenothiazine (PTZ) as electron donors and 9,9-dimethylthioxanthene (TX) as the electron acceptor. The PTZ groups are attached at different positions on the acceptor... Read More about Achieving Conformational Control in RTP and TADF Emitters by Functionalization of the Central Core.

Strategic modification of ligands for remarkable piezochromic luminescence (PCL) based on a neutral Ir(iii) phosphor (2019)
Journal Article

A new aggregation-induced emission (AIE)-active neutral Ir(III) complex has been rationally designed and synthesized by introducing carboxyl and F substituents into the ancillary and cyclometalating ligands, respectively, to construct different kinds... Read More about Strategic modification of ligands for remarkable piezochromic luminescence (PCL) based on a neutral Ir(iii) phosphor.

Delayed Blue Fluorescence via Upper-triplet State Crossing from C-C Bonded Donor-Acceptor Charge-Transfer Molecules with Azatriangulene cores (2019)
Journal Article

We report the synthesis and structural and photophysical characterization of two series of molecules with functionalized azatriangulene electron donor cores and three pendant electron acceptor units. The presented donor and acceptor units are joined... Read More about Delayed Blue Fluorescence via Upper-triplet State Crossing from C-C Bonded Donor-Acceptor Charge-Transfer Molecules with Azatriangulene cores.

AIE Multinuclear Ir(III) Complexes for Biocompatible Organic Nanoparticles with Highly Enhanced Photodynamic Performance (2018)
Journal Article

The singlet oxygen (1O2) generation ability of a photosensitizer (PS) is pivotal for photodynamic therapy (PDT). Transition metal complexes are effective PSs, owing to their high 1O2 generation ability. However, non‐negligible cellular toxicity, poor... Read More about AIE Multinuclear Ir(III) Complexes for Biocompatible Organic Nanoparticles with Highly Enhanced Photodynamic Performance.

Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters (2018)
Journal Article

Four new symmetrical donor–acceptor–donor (D–A–D)-type molecules are reported with diphenylamine (DPA) or 10,11-dihydro-5H-dibenz[b,f]azepine (Az) as electron donors and 9,9-dimethylthioxanthene-S,S-dioxide (TXO2) as the electron acceptor. The donors... Read More about Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters.

Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence (2018)
Journal Article

Chemical modification of phenothiazine–benzophenone derivatives is shown to tune the emission behavior from triplet states by selecting the molecular geometry of the intramolecular charge transfer (ICT) state. A fundamental principle of planar ICT (P... Read More about Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence.

Highly luminescent 2-phenylpyridine-free diiridium complexes with bulky 1,2-diarylimidazole cyclometalating ligands (2018)
Journal Article

While a number of highly emissive dinuclear Ir(III) complexes have been reported, they have generally been restricted to structures based on 2-phenylpyridine (Hppy) cyclometalates. We now present a series of new hydrazide-bridged diiridium complexes... Read More about Highly luminescent 2-phenylpyridine-free diiridium complexes with bulky 1,2-diarylimidazole cyclometalating ligands.

New Mixed-C^N Ligand Tris-cyclometalated Ir(III) Complexes for Highly-Efficient Green Organic Light-Emitting Diodes with Low Efficiency Roll-off (2018)
Journal Article

This article reports new tris‐cyclometalated Ir complexes containing mixed‐C^N ligands, (C^N1)2Ir(C^N2), which are a rarely explored class of Ir(III) complexes. Two new mixed 2‐phenylpyridine (ppy) / 4‐methyl‐2,5‐diphenylpyridine (mdp) complexes (ppy... Read More about New Mixed-C^N Ligand Tris-cyclometalated Ir(III) Complexes for Highly-Efficient Green Organic Light-Emitting Diodes with Low Efficiency Roll-off.

Bond Rotations and Heteroatom Effects in Donor-Acceptor-Donor Molecules: Implications for Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence (2018)
Journal Article

The synthesis of 1-methylphenoxazine via CO2-directed lithiation chemistry is reported. This electron donor was coupled with 2,8-dibenzothiophene-S,S-dioxide with Buchwald–Hartwig chemistry to give a new D–A–D charge-transfer fluorescent molecule 1b.... Read More about Bond Rotations and Heteroatom Effects in Donor-Acceptor-Donor Molecules: Implications for Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence.

Polyurethane Derivatives for Highly Sensitive and Selective Fluorescent Detection of 2,4,6-Trinitrophenol (TNP) (2018)
Journal Article

A series of luminescent non-conjugated polyurethane derivatives (PUs) has been obtained in a facile way in high yields. The polymers show highly selective and sensitive detection of 2,4,6-trinitrophenol (TNP) (picric acid). The selectivity for TNP is... Read More about Polyurethane Derivatives for Highly Sensitive and Selective Fluorescent Detection of 2,4,6-Trinitrophenol (TNP).

Intramolecular Pi-Pi Interactions with a Chiral Auxiliary Ligand Control Diastereoselectivity in a Cyclometalated Ir(III) Complex (2018)
Journal Article

The application of a chiral auxiliary ligand to control the diastereoselectivity in the synthesis of a cyclometalated iridium(III) complex is presented. The diastereomeric iridium(III) complexes 1a and 1b are reported, in which a phenoxyoxazoline aux... Read More about Intramolecular Pi-Pi Interactions with a Chiral Auxiliary Ligand Control Diastereoselectivity in a Cyclometalated Ir(III) Complex.

The influence of molecular conformation on the photophysics of organic room temperature phosphorescent luminophores (2018)
Journal Article

A series of novel donor–acceptor–donor (D–A–D) compounds featuring dibenzothiophene (DBT) and phenothiazine (PTZ) units are presented. A different degree of steric hindrance between the donor and acceptor fragments is achieved by the systematic chang... Read More about The influence of molecular conformation on the photophysics of organic room temperature phosphorescent luminophores.

Heteroatom-Induced Molecular Asymmetry Tunes Quantum Interference in Charge Transport through Single-Molecule Junctions (2018)
Journal Article

We studied the interplay between quantum interference (QI) and molecular asymmetry in charge transport through a single molecule. Eight compounds with five-membered core rings were synthesized, and their single-molecule conductances were characterize... Read More about Heteroatom-Induced Molecular Asymmetry Tunes Quantum Interference in Charge Transport through Single-Molecule Junctions.

Conformationally-Restricted Bicarbazoles with Phenylene Bridges Displaying Deep-Blue Emission and High Triplet Energies: Systematic Structure–Property Relationships (2018)
Journal Article

The synthesis is reported of twelve new symmetrical carbazole dimers in which the carbazole units are linked via 1,4-phenylene spacers. There are two distinct series of compounds based on the position on the carbazole ring where the phenylene spacer... Read More about Conformationally-Restricted Bicarbazoles with Phenylene Bridges Displaying Deep-Blue Emission and High Triplet Energies: Systematic Structure–Property Relationships.

Selective sensing of 2,4,6-trinitrophenol (TNP) in aqueous media with “aggregation-induced emission enhancement” (AIEE)-active iridium(III) complexes (2018)
Journal Article

A series of new phosphorescent cyclometalated iridium(III) complexes which possess aggregation-induced emission enhancement (AIEE) detect 2,4,6-trinitrophenol (TNP) selectively with high quenching constants in aqueous media. The sensing mechanism was... Read More about Selective sensing of 2,4,6-trinitrophenol (TNP) in aqueous media with “aggregation-induced emission enhancement” (AIEE)-active iridium(III) complexes.

Sky-blue emitting bridged diiridium complexes: beneficial effects of intramolecular π–π stacking (2018)
Journal Article

The potential of intramolecular π–π interactions to influence the photophysical properties of diiridium complexes is an unexplored topic, and provides the motivation for the present study. A series of diarylhydrazide-bridged diiridium complexes funct... Read More about Sky-blue emitting bridged diiridium complexes: beneficial effects of intramolecular π–π stacking.

Fast Data Sorting with Modified Principal Component Analysis to Distinguish Unique Single Molecular Break Junction Trajectories (2018)
Journal Article

A simple and fast analysis method to sort large data sets into groups with shared distinguishing characteristics is described and applied to single molecular break junction conductance versus electrode displacement data. The method, based on principa... Read More about Fast Data Sorting with Modified Principal Component Analysis to Distinguish Unique Single Molecular Break Junction Trajectories.

Determination of standard redox rate constants of OLED active compounds by electrochemical impedance spectroscopy (2017)
Journal Article

A number of commercial organic compounds (m-MTDATA, PBD, CBP, TAPC, NPB, TPBi, etc) as well as several donor-acceptor-donor (D-A-D) compounds were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The compounds were chose... Read More about Determination of standard redox rate constants of OLED active compounds by electrochemical impedance spectroscopy.

An AIE-active phosphorescent Ir(III) complex with piezochromic luminescence (PCL) and its application for monitoring volatile organic compounds (VOCs) (2017)
Journal Article

A neutral multifunctional dinuclear Ir(III) complex 1 with a Schiff base bridging ligand is shown to combine aggregation-induced emission (AIE), piezochromic luminescence (PCL) and vapochromism. The complex displays a reversible colour change in its... Read More about An AIE-active phosphorescent Ir(III) complex with piezochromic luminescence (PCL) and its application for monitoring volatile organic compounds (VOCs).

Thermally Activated Delayed Fluorescence in Cu(I) Complexes Originating from Restricted Molecular Vibrations (2017)
Journal Article

The mechanism of thermally activated delayed fluorescence (TADF) in molecules in aggregated or condensed solid states has been rarely studied and is not well understood. Nevertheless, many applications of TADF emitters are strongly affected by their... Read More about Thermally Activated Delayed Fluorescence in Cu(I) Complexes Originating from Restricted Molecular Vibrations.

Pyridylpyrazole N^N Ligands Combined with Sulfonyl-Functionalised Cyclometalating Ligands for Blue-Emitting Iridium(III) Complexes and Solution-Processable PhOLEDs (2017)
Journal Article

A series of blue iridium(III) complexes (12–15) comprising sulfonyl-functionalised phenylpyridyl cyclometalating ligands and pyridylpyrazole N^N ligands are reported, with an X-ray crystal structure obtained for 12. The complexes are highly emissive... Read More about Pyridylpyrazole N^N Ligands Combined with Sulfonyl-Functionalised Cyclometalating Ligands for Blue-Emitting Iridium(III) Complexes and Solution-Processable PhOLEDs.

Photophysics of an Asymmetric Donor–Acceptor–Donor′ TADF Molecule and Reinterpretation of Aggregation-Induced TADF Emission in These Materials (2017)
Journal Article

We report an in-depth photophysical investigation of an asymmetric donor–acceptor–donor′ (D–A–D′) thermally activated delayed fluorescence (TADF) molecule (4-(9H-carbazol-9-yl)phenyl)(4-(10H-phenothiazin-10-yl)phenyl)sulfone and compare its photophys... Read More about Photophysics of an Asymmetric Donor–Acceptor–Donor′ TADF Molecule and Reinterpretation of Aggregation-Induced TADF Emission in These Materials.

Optical and Polarity Control of Donor–Acceptor Conformation and Their Charge-Transfer States in Thermally Activated Delayed-Fluorescence Molecules (2017)
Journal Article

This study reports two novel D–A–D molecules, 2,7-bis(phenothiazin-10-yl)-9,9-dimethylthioxanthene-S,S-dioxide (DPT-TXO2) and 2,7-bis(1-methylphenothiazin-10-yl)-9,9-dimethylthioxanthene-S,S-dioxide (DMePT-TXO2), where the latter differs by only a me... Read More about Optical and Polarity Control of Donor–Acceptor Conformation and Their Charge-Transfer States in Thermally Activated Delayed-Fluorescence Molecules.

Charge-Gating Dibenzothiophene-S,S-dioxide Bridges in Electron Donor–Bridge–Acceptor Conjugates (2017)
Journal Article

The synthesis of a series of new electron donor–bridge–acceptor (D–B–A) conjugates (18–20) comprising electron-donating zinc(II) porphyrins (ZnPs) and electron-accepting fullerenes (C60s) connected through various co-oligomer bridges containing both... Read More about Charge-Gating Dibenzothiophene-S,S-dioxide Bridges in Electron Donor–Bridge–Acceptor Conjugates.

Quantum interference and heteroaromaticity of para- and meta-linked bridged biphenyl units in single molecular conductance measurements (2017)
Journal Article

Is there a correlation between the (hetero)aromaticity of the core of a molecule and its conductance in a single molecular junction? To address this question, which is of fundamental interest in molecular electronics, oligo(arylene-ethynylene) (OAE)... Read More about Quantum interference and heteroaromaticity of para- and meta-linked bridged biphenyl units in single molecular conductance measurements.

Color Tuning of Efficient Electroluminescence in the Blue and Green Regions Using Heteroleptic Iridium Complexes with 2-Phenoxyoxazole Ancillary Ligands (2017)
Journal Article

A rational molecular design strategy for tuning the emission color of phosphorescent complexes by functionalization of the bis(2-phenylpyridine)(2-(2′-oxyphenyl)-2-oxazoline/oxazole)iridium(III) framework is reported. Five new complexes (2–6) have be... Read More about Color Tuning of Efficient Electroluminescence in the Blue and Green Regions Using Heteroleptic Iridium Complexes with 2-Phenoxyoxazole Ancillary Ligands.

Synthesis, Diastereomer Separation, and Optoelectronic and Structural Properties of Dinuclear Cyclometalated Iridium(III) Complexes with Bridging Diarylhydrazide Ligands (2017)
Journal Article

A series of diiridium complexes 13–16 bridged by diarylhydrazine ligands and cyclometalated by phenylpyridine or phenylpyrazole ligands was synthesized. In all cases the ΛΔ meso and ΛΛ/ΔΔ rac diastereomers were separated and characterized by single-c... Read More about Synthesis, Diastereomer Separation, and Optoelectronic and Structural Properties of Dinuclear Cyclometalated Iridium(III) Complexes with Bridging Diarylhydrazide Ligands.

Bright Green PhOLEDs Using Cyclometalated Diiridium(III) Complexes with Bridging Oxamidato Ligands as Phosphorescent Dopants (2017)
Journal Article

In contrast to monoiridium complexes, the study of diiridium complexes as dopants in phosphorescent organic light-emitting devices (PhOLEDs) is largely unexplored. We now describe the syntheses, detailed NMR analyses, X-ray crystal structures and opt... Read More about Bright Green PhOLEDs Using Cyclometalated Diiridium(III) Complexes with Bridging Oxamidato Ligands as Phosphorescent Dopants.

Rational design and characterization of heteroleptic phosphorescent iridium(III) complexes for highly efficient deep-blue OLEDs (2016)
Journal Article

Two new deep-blue iridium(III) complexes, (dfpypy)2IrFptz (Ir1) and (Medfpypy)2IrFptz (Ir2), comprising difluoro-bipyridyl (dfpypy) derivatives as cyclometaling ligands and a chelated pyridyl-triazole (Fptz) ancillary ligand are reported. The bipyrid... Read More about Rational design and characterization of heteroleptic phosphorescent iridium(III) complexes for highly efficient deep-blue OLEDs.

The HOF structures of nitrotetraphenylethene derivatives provide new insights into the nature of AIE and a way to design mechanoluminescent materials (2016)
Journal Article

This study probes the effect of intramolecular rotations on aggregation-induced emission (AIE) and leads to a kind of supramolecular mechanoluminescent material. Two hydrogen-bonded organic frameworks (HOFs), namely HOFTPE3N and HOFTPE4N, have been c... Read More about The HOF structures of nitrotetraphenylethene derivatives provide new insights into the nature of AIE and a way to design mechanoluminescent materials.

Sulfonyl-Substituted Heteroleptic Cyclometalated Iridium(III) Complexes as Blue Emitters for Solution-Processable Phosphorescent Organic Light-Emitting Diodes (2016)
Journal Article

The synthesis is reported of a series of blue-emitting heteroleptic iridium complexes with phenylpyridine (ppy) ligands substituted with sulfonyl, fluorine, and/or methoxy substituents on the phenyl ring and a picolinate (pic) ancillary ligand. Some... Read More about Sulfonyl-Substituted Heteroleptic Cyclometalated Iridium(III) Complexes as Blue Emitters for Solution-Processable Phosphorescent Organic Light-Emitting Diodes.

Experimental and Computational Studies of Single-Molecule Conductance of Ru(II) and Pt(II) trans-Bis(acetylide) Complexes (2016)
Journal Article

The single-molecule conductance of metal complexes of the general forms trans-Ru(C≡CArC≡CY)2(dppe)2 and trans-Pt(C≡CArC≡CY)2(PPh3)2 (Ar = 1,4-C6H2-2,5-(OC6H13)2; Y = 4-C5H4N, 4-C6H4SMe) have been determined using the STM I(s) technique. The complexes... Read More about Experimental and Computational Studies of Single-Molecule Conductance of Ru(II) and Pt(II) trans-Bis(acetylide) Complexes.

Pendant Homopolymer and Copolymers as Solution-Processable Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes (2016)
Journal Article

Materials that display thermally activated delayed fluorescence (TADF) have recently been identified as the third generation emitters for organic light-emitting diodes (OLEDs). However, there are only a few reported examples of polymeric TADF materia... Read More about Pendant Homopolymer and Copolymers as Solution-Processable Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes.

Novel Emitting System Based on a Multifunctional Bipolar Phosphor: An Effective Approach for Highly Efficient Warm- White Light-Emitting Devices with High Color-Rendering Index at High Luminance (2016)
Journal Article

A three-color warm-white organic light-emitting diode employing an efficient phosphor–phosphor type host–guest emitting system achieves efficiencies of 27.3% for external quantum efficiency and 74.5 lm W–1 for power efficiency at a luminance of 1000... Read More about Novel Emitting System Based on a Multifunctional Bipolar Phosphor: An Effective Approach for Highly Efficient Warm- White Light-Emitting Devices with High Color-Rendering Index at High Luminance.

Combined Aggregation Induced Emission (AIE), Photochromism and Photoresponsive Wettability in Simple Dichloro-substituted Triphenylethylene Derivatives (2016)
Journal Article

A dichloro-substituted triphenylethylene derivative (TrPECl2) with aggregation-induced emission (AIE), photochromism and photoresponsive wettability has been synthesized. The new compound shows fast-response photochromic behaviour, with good ON/OFF r... Read More about Combined Aggregation Induced Emission (AIE), Photochromism and Photoresponsive Wettability in Simple Dichloro-substituted Triphenylethylene Derivatives.

Achieving Very Bright Mechanoluminescence from Purely Organic Luminophores with Aggregation-Induced Emission by Crystal Design (2016)
Journal Article

Although bright organic mechanoluminescence (ML) has been observed for a few luminophores with aggregation-induced emission (AIE), details of the positive effect of AIE on ML performance remain unclear and a feasible design principle for the AIE-ML c... Read More about Achieving Very Bright Mechanoluminescence from Purely Organic Luminophores with Aggregation-Induced Emission by Crystal Design.

Rational Design of TADF Polymers Using a Donor–Acceptor Monomer with Enhanced TADF Efficiency Induced by the Energy Alignment of Charge Transfer and Local Triplet Excited States (2016)
Journal Article

The photophysics of thermally activated delayed fluorescence (TADF) in phenothiazine-dibenzothiophene-S,S-dioxide (PTZ-DBTO2) molecule is investigated in detail. First, it is shown that the proximity of local triplet excited states (3LE), e.g., 3D or... Read More about Rational Design of TADF Polymers Using a Donor–Acceptor Monomer with Enhanced TADF Efficiency Induced by the Energy Alignment of Charge Transfer and Local Triplet Excited States.

Achieving Remarkable Mechanochromism and White-Light Emission with Thermally Activated Delayed Fluorescence through the Molecular Heredity Principle (2016)
Journal Article

Achieving high contrast mechanochromism (Δλem,max > 100 nm) and white-light emission under mild conditions from a single compound with a simple structure is a great challenge. Herein, we report a novel dual-emissive compound, namely SCP, with an asym... Read More about Achieving Remarkable Mechanochromism and White-Light Emission with Thermally Activated Delayed Fluorescence through the Molecular Heredity Principle.

The interplay of thermally activated delayed fluorescence (TADF) and room temperature organic phosphorescence in sterically-constrained donor–acceptor charge-transfer molecules (2016)
Journal Article

A series of phenothiazine–dibenzothiophene-S,S-dioxide charge-transfer molecules have been synthesized. Increasing steric restriction around the donor–acceptor bond significantly alters contributions from TADF and phosphorescence. Bulky substituents... Read More about The interplay of thermally activated delayed fluorescence (TADF) and room temperature organic phosphorescence in sterically-constrained donor–acceptor charge-transfer molecules.

Intermolecular Electronic Coupling of Organic Units for Efficient Persistent Room-Temperature Phosphorescence (2016)
Journal Article

Although persistent room-temperature phosphorescence (RTP) emission has been observed for a few pure crystalline organic molecules, there is no consistent mechanism and no universal design strategy for organic persistent RTP (pRTP) materials. A new m... Read More about Intermolecular Electronic Coupling of Organic Units for Efficient Persistent Room-Temperature Phosphorescence.

Solution-processed blue/deep blue and white phosphorescent organic light emitting diodes (PhOLEDs) hosted by a polysiloxane derivative with pendant mCP (1, 3-bis(9-carbazolyl)benzene) (2015)
Journal Article

The synthesis and characterization is reported of an efficient polysiloxane derivative containing the 1,3-bis(9-carbazolyl)benzene (mCP) moiety as a pendant unit on the polysiloxane backbone. In comparison with mCP, the mCP-polysiloxane hybrid (PmCPS... Read More about Solution-processed blue/deep blue and white phosphorescent organic light emitting diodes (PhOLEDs) hosted by a polysiloxane derivative with pendant mCP (1, 3-bis(9-carbazolyl)benzene).

Anion-specific aggregation induced phosphorescence emission (AIPE) in an ionic iridium complex in aqueous media (2015)
Journal Article

Efficient aggregation induced phosphorescence emission (AIPE) of an ionic Ir(III) complex occurs when the counterion (PF6−) is exchanged specifically by ClO4− in aqueous media. As a result, a rapid, highly selective “turn-on” phosphorescent response... Read More about Anion-specific aggregation induced phosphorescence emission (AIPE) in an ionic iridium complex in aqueous media.

Key role of the linker in pyrene-linker-carboxylate surfactants for the efficient aqueous dispersion of multiwalled carbon nanotubes (2015)
Journal Article

This study establishes that the structure of the linker group between the hydrophobic and hydrophilic units in the new surfactants 1–13 plays an important role in the dispersibility of multiwalled carbon nanotubes (MWNTs) in water. The systematic var... Read More about Key role of the linker in pyrene-linker-carboxylate surfactants for the efficient aqueous dispersion of multiwalled carbon nanotubes.

Syntheses and Structures of Buta-1,3-Diynyl Complexes from ‘On Complex’ Cross-Coupling Reactions (2015)
Journal Article

The Pd(PPh3)4/CuI-cocatalyzed reaction of Ru(C≡CC≡CH)(PPh3)2Cp (2) with aryl iodides, Ar–I (3, Ar = C6H4CN-4 (a); C6H4Me-4 (b); C6H4OMe-4 (c); 2,3-dihydrobenzo[b]thiophene (d); C5H4N (e)) proceeds smoothly in diisopropylamine and under an inert atmos... Read More about Syntheses and Structures of Buta-1,3-Diynyl Complexes from ‘On Complex’ Cross-Coupling Reactions.

Oligo(p-phenyleneethynylene) (OPE) Molecular Wires: Synthesis and Length Dependence of Photoinduced Charge Transfer in OPEs with Triarylamine and Diaryloxadiazole End Groups (2015)
Journal Article

The systematic synthesis and photophysical, electrochemical and computational studies on an extended series of triphenylamine-[C[TRIPLE BOND]C-1,4-C6H2(OR)2]n-C[TRIPLE BOND]C-diphenyl-1,3,4-oxadiazole dyad molecules (the OR groups are at 2,5-position... Read More about Oligo(p-phenyleneethynylene) (OPE) Molecular Wires: Synthesis and Length Dependence of Photoinduced Charge Transfer in OPEs with Triarylamine and Diaryloxadiazole End Groups.

A versatile hybrid polyphenylsilane host for highly efficient solution-processed blue and deep blue electrophosphorescence (2014)
Journal Article

A universal hybrid polymeric host (PCzSiPh) for blue and deep blue phosphors has been designed and synthesized by incorporating electron-donating carbazole as pendants on a polytetraphenylsilane main chain. The polymer PCzSiPh (4) has a wide bandgap... Read More about A versatile hybrid polyphenylsilane host for highly efficient solution-processed blue and deep blue electrophosphorescence.

Structural versus Electrical Functionalization of Oligo(phenyleneethynylene) Diamine Molecular Junctions (2014)
Journal Article

We explore both experimentally and theoretically the conductance and packing of molecular junctions based on oligo(phenyleneethynylene) (OPE) diamine wires, when a series of functional groups are incorporated into the wires. Using the scanning tunnel... Read More about Structural versus Electrical Functionalization of Oligo(phenyleneethynylene) Diamine Molecular Junctions.

Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs (2014)
Journal Article

Two phosphorescent dinuclear iridium(III) diastereomers (ΛΔ/ΔΛ) and (ΛΛ/ΔΔ) are readily separated by making use of their different solubilities in hot hexane. The bridging diarylhydrazide ligand plays an important role in the electrochemistry and pho... Read More about Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs.

Anisotropic highly-conductive films of poly(3-methylthiophene) from epitaxial electropolymerization on oriented poly(vinylidene fluoride) (2014)
Journal Article

Electrochemical polymerization of 3-methylthiophene on highly oriented poly(vinylidene fluoride) (PVDF) film was achieved by cyclic voltammetry to yield well-ordered poly(3-methylthiophene) (P3MT) thin films with anisotropic structural and conductivi... Read More about Anisotropic highly-conductive films of poly(3-methylthiophene) from epitaxial electropolymerization on oriented poly(vinylidene fluoride).

New ionic dinuclear Ir(III) Schiff base complexes with aggregation-induced phosphorescent emission (AIPE) (2014)
Journal Article

Two new ionic dinuclear Ir(III) Schiff base complexes which are straightforward to synthesise have luminescence quantum yields as high as 37% in neat films. These are the first examples of dinuclear ionic Ir(III) complexes that display aggregation-in... Read More about New ionic dinuclear Ir(III) Schiff base complexes with aggregation-induced phosphorescent emission (AIPE).

Intramolecular π Stacking in Cationic Iridium(III) Complexes with Phenyl-Functionalized Cyclometalated Ligands: Synthesis, Structure, Photophysical Properties, and Theoretical Studies (2014)
Journal Article

The syntheses of two new heteroleptic cationic iridium complexes containing 2,6-diphenylpyridine (Hdppy) and 2,4,6-triphenylpyridine (Htppy) as the cyclometalated ligands, namely, [Ir(dppy)2phen]PF6 (1, phen = 1,10-phenanthroline) and [Ir(tppy)2phen]... Read More about Intramolecular π Stacking in Cationic Iridium(III) Complexes with Phenyl-Functionalized Cyclometalated Ligands: Synthesis, Structure, Photophysical Properties, and Theoretical Studies.

The Synthesis of Functionalised Diaryltetraynes and Their Transport Properties in Single-Molecule Junctions (2014)
Journal Article

The synthesis and characterisation is described of six diaryltetrayne derivatives [Ar-(C[TRIPLE BOND]C)4-Ar] with Ar=4-NO2-C6H4- (NO24), 4-NH(Me)C6H4- (NHMe4), 4-NMe2C6H4- (NMe24), 4-NH2-(2,6-dimethyl)C6H4- (DMeNH24), 5-indolyl (IN4) and 5-benzothien... Read More about The Synthesis of Functionalised Diaryltetraynes and Their Transport Properties in Single-Molecule Junctions.

A Carbazole-Oxadiazole Diad Molecule for Single-Emitting-Component White Organic Light-Emitting Devices (WOLEDs) (2014)
Journal Article

The synthesis is reported of a new molecule consisting of N-phenylcarbazole linked through a butadiyne bridge to 2,5-diphenyl-1,3,4-oxadiazole. The compound shows blue photoluminescence with positive solvatochromism: e.g., λmax 401 nm in cyclohexane,... Read More about A Carbazole-Oxadiazole Diad Molecule for Single-Emitting-Component White Organic Light-Emitting Devices (WOLEDs).

Oligo(aryleneethynylene)s with Terminal Pyridyl Groups: Synthesis and Length Dependence of the Tunnelling to Hopping Transition in Single-Molecule Conductances (2013)
Journal Article

The synthesis is reported of a new series of oligo(aryleneethynylene) (OAE) derivatives of up to ca. 6 nm in molecular length (OAE9) using iterative Pd-mediated Sonogashira cross-coupling methodology. The oligo-p-phenyleneethynylene cores of the mole... Read More about Oligo(aryleneethynylene)s with Terminal Pyridyl Groups: Synthesis and Length Dependence of the Tunnelling to Hopping Transition in Single-Molecule Conductances.

Efficient light-emitting electrochemical cells (LECs) based on ionic iridium(III) complexes with 1,3,4-oxadiazole ligands. (2013)
Journal Article

Eight new iridium(III) complexes 1-8, with 1,3,4-oxadiazole (OXD) derivatives as the cyclometalated C^N ligand and/or the ancillary N^N ligands are synthesized and their electrochemical, photophysical, and solid-state light-emitting electrochemical c... Read More about Efficient light-emitting electrochemical cells (LECs) based on ionic iridium(III) complexes with 1,3,4-oxadiazole ligands..

Triplet Harvesting with 100% Efficiency by Way of Thermally Activated Delayed Fluorescence in Charge Transfer OLED Emitters. (2013)
Journal Article

Organic light-emitting diodes (OLEDs) have their performance limited by the number of emissive singlet states created upon charge recombination (25%). Recently, a novel strategy has been proposed, based on thermally activated up-conversion of triplet... Read More about Triplet Harvesting with 100% Efficiency by Way of Thermally Activated Delayed Fluorescence in Charge Transfer OLED Emitters..

Are terminal aryl butadiynes stable? Synthesis and X-ray crystal structures of a series of aryl- and heteroaryl-butadiynes (Ar-C C-C C-H) (2006)
Journal Article

The synthesis and isolation are reported of a range of terminal aryl- and heteroaryl-butadiynes (ArC⋮C−C⋮CH) 4a−h from 2-methyl-6-(aryl/heteroaryl)hexa-3,5-diyn-2-ol precursors. The stability of 4a−h in solution is concentration dependent:  many of t... Read More about Are terminal aryl butadiynes stable? Synthesis and X-ray crystal structures of a series of aryl- and heteroaryl-butadiynes (Ar-C C-C C-H).

Calix 6 arene derivatives selectively functionalized at alternate sites on the smaller rim with 2-phenylpyridine and 2-fluorenylpyridine substituents to provide deep cavities (2006)
Journal Article

The synthesis is described of calix[6]arene derivatives 4, 9, and 14 functionalized at alternate sites on the smaller rim with 4‘-(pyrid-2‘ ‘-yl)phenylmethoxy, (6‘-phenylpyrid-3‘-ylmethoxy), and {6‘-[2-(9,9-di-n-hexylfluorenyl)]pyrid-3‘-ylmethoxy} su... Read More about Calix 6 arene derivatives selectively functionalized at alternate sites on the smaller rim with 2-phenylpyridine and 2-fluorenylpyridine substituents to provide deep cavities.

Intramolecular charge transfer assisted by conformational changes in the excited state of fluorene-dibenzothiophene-S,S-dioxide co-oligomers (2006)
Journal Article

The strong solvatochromism observed for two fluorene-dibenzothiophene-S,S-dioxide oligomers in polar solvents has been investigated using steady-state and time-resolved fluorescence techniques. A low-energy absorption band, attributed to a charge-tra... Read More about Intramolecular charge transfer assisted by conformational changes in the excited state of fluorene-dibenzothiophene-S,S-dioxide co-oligomers.

Synthesis of new axially-disubstituted silicon-phthalocyanine derivatives : optical and structural characterisation. (2006)
Journal Article

This paper describes the synthesis of a range of new axially-disubstituted silicon-phthalocyanines with several ester and ether derivatives as axial ligands, including phenyl, terphenyl, thienyl and pyrenyl systems. Their absorption and emission spec... Read More about Synthesis of new axially-disubstituted silicon-phthalocyanine derivatives : optical and structural characterisation..

New electroluminescent bipolar compounds for balanced charge-transport and tuneable colour in organic light emitting diodes: triphenylamine oxadiazole-fluorene triad molecules (2006)
Journal Article

This work describes bipolar 2,5-diaryl-1,3,4-oxadiazole–fluorene hybrids which incorporate triphenylamine or carbazole units within the π-electron system, viz. compounds 7, 8, 14 and 16. A related bipolar bis(oxadiazolyl)pyridine system 20 is reporte... Read More about New electroluminescent bipolar compounds for balanced charge-transport and tuneable colour in organic light emitting diodes: triphenylamine oxadiazole-fluorene triad molecules.

Extreme conformational constraints in pi-extended tetrathiafulvalenes : Unusual topologies and redox behavior of doubly and triply bridged cyclophanes. (2006)
Journal Article

Doubly and triply bridged 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene (ex-TTF) derivatives have been synthesized. Key steps are the generation and macrocyclization reactions of ex-TTF-dithiolate reagents. The X-ray crystal structures of th... Read More about Extreme conformational constraints in pi-extended tetrathiafulvalenes : Unusual topologies and redox behavior of doubly and triply bridged cyclophanes..

Nanoscale aryleneethynylene oligomers incorporating fluorenone units as electron-dopable molecular wires. (2006)
Journal Article

The first general synthetic procedures to obtain fluorenone-containing aryleneethynylene oligomers have been developed. The strategy involves stepwise Sonogashira cross-coupling methodology, with 2,7-diethynylfluorenone and 1,4-diiodo-2,6-di(hexyloxy... Read More about Nanoscale aryleneethynylene oligomers incorporating fluorenone units as electron-dopable molecular wires..

Remarkable interplay of redox states and conformational changes in a sterically crowded, cross-conjugated tetrathiafulvalene vinylog. (2006)
Journal Article

Derivatives of 9-[2-(1,3-dithiol-2-ylidene)ethylidene]thioxanthene have been synthesized using Horner–Wadsworth–Emmons reactions of (1,3-dithiol-2-yl)phosphonate reagents with thioxanthen-9-ylidene-acetaldehyde (5). Further reactions lead to the ster... Read More about Remarkable interplay of redox states and conformational changes in a sterically crowded, cross-conjugated tetrathiafulvalene vinylog..

The interplay of inverted redox potentials and aromaticity in the oxidized states of new pi-electron donors: 9-(1,3-dithiol-2-ylidene)fluorene and 9-(1,3-dithiol-2-ylidene)thioxanthene derivatives. (2006)
Journal Article

Derivatives of 9-(1,3-dithiol-2-ylidene)fluorene (9) and 9-(1,3-dithiol-2-ylidene)thioxanthene (10) have been synthesised using Horner–Wadsworth–Emmons reactions of (1,3-dithiol-2-yl)phosphonate reagents with fluorenone and thioxanthen-9-one. X-ray c... Read More about The interplay of inverted redox potentials and aromaticity in the oxidized states of new pi-electron donors: 9-(1,3-dithiol-2-ylidene)fluorene and 9-(1,3-dithiol-2-ylidene)thioxanthene derivatives..

Organic rectifying junctions from an electron-accepting molecular wire and an electron-donating phthalocyanine. (2006)
Journal Article

Self-assembled monolayers (SAMs) of arylene-ethynylene oligomers that incorporate electron-accepting 9-fluorenone and 9-[(4-pyridyl)methylene]fluorene units in the backbone exhibit symmetrical current–voltage (I–V) characteristics, but rectifying jun... Read More about Organic rectifying junctions from an electron-accepting molecular wire and an electron-donating phthalocyanine..

Convergent synthesis of 10 nm aryleethynylene molecular wires by an iterative regioselective deprotection/sonogashira coupling protocol (2006)
Journal Article

The synthesis of a new series of rigid-rod aryleneethynylene derivatives of up to ca. 10 nm molecular length (compounds 16 and 17) is reported using iterative Pd-mediated Sonogashira coupling methodology combined with regioselective removal of the di... Read More about Convergent synthesis of 10 nm aryleethynylene molecular wires by an iterative regioselective deprotection/sonogashira coupling protocol.

Bridged diiridium complexes for electrophosphorescent OLEDs : synthesis, X-ray crystal structures, photophysics, and devices. (2006)
Journal Article

Results are presented which challenge the accepted view that dinuclear transition metal–ligand complexes are unsuitable for organic light-emitting device (OLED) applications due to their low luminescence quantum efficiencies. We establish for the fir... Read More about Bridged diiridium complexes for electrophosphorescent OLEDs : synthesis, X-ray crystal structures, photophysics, and devices..

Dibenzothiophene-S,S-dioxide-fluorene co-oligomers. Stable, highly-efficient blue emitters with improved electron affinity (2005)
Journal Article

Incorporation of dibenzothiophene- S, S-dioxide units into conjugated fluorene oligomers changes the frontier orbital energy levels and presents an effective way to increase the electron affinity of these materials, which are highly fluorescent with... Read More about Dibenzothiophene-S,S-dioxide-fluorene co-oligomers. Stable, highly-efficient blue emitters with improved electron affinity.

A versatile synthesis of pyrazolo 3,4-c isoquinoline derivatives by reaction of 4-aryl-5-aminopyrazoles with aryl/heteroaryl aldehydes: the effect of the heterocycle on the reaction pathways (2005)
Journal Article

The reaction of 4-(3,4-dimethoxyphenyl)-5-aminopyrazoles 7A-D with aromatic and heterocyclic aldehydes in strong acidic media (trifluoroacetic or formic acid) has been studied. The initial azomethine derivatives 8 undergo cyclization similar to the P... Read More about A versatile synthesis of pyrazolo 3,4-c isoquinoline derivatives by reaction of 4-aryl-5-aminopyrazoles with aryl/heteroaryl aldehydes: the effect of the heterocycle on the reaction pathways.

Self-assembly and multistage redox chemistry of strong electron acceptors on metal surfaces: Polynitrofluorenes on gold and platinum (2005)
Journal Article

Nitrofluoren-9-one and nitrofluoren-9-dicyanomethylene electron acceptors 7, 8, and 11 functionalized with a terminal thioctic acid unit have been synthesized from 2,4,5,7-tetranitrofluorenone. The self-assembled monolayers (SAMs) of these compounds... Read More about Self-assembly and multistage redox chemistry of strong electron acceptors on metal surfaces: Polynitrofluorenes on gold and platinum.

Practical syntheses of N-hexylcarbazol-2-yl- and -3-yl-boronic acids, their cross-coupled products and a derived tris-cyclometalated (pyridin-2-yl)carbazole iridium(III) complex (2005)
Journal Article

The syntheses of N-hcxylcarbazol-2-yl- and -3-yl-boronic acids (1 and 2) are described on a ca. 7 g scale, starting from commercially available 2,5-dibromonitrobenzene (4) and carbazole (11), respectively. Compounds I and 2 underwent efficient pallad... Read More about Practical syntheses of N-hexylcarbazol-2-yl- and -3-yl-boronic acids, their cross-coupled products and a derived tris-cyclometalated (pyridin-2-yl)carbazole iridium(III) complex.

2-Ethoxy-3-pyridylboronic acid: A versatile reagent for the synthesis of highly-functionalised 3-aryl/heteroaryl-pyridines via Suzuki cross-coupling reactions (2005)
Journal Article

This paper describes the commercially-viable synthesis and isolation of 2-ethoxy-3-pyridylboronic acid on a ca. 70 g scale via a directed ortho-metalation reaction on readily-available 2-ethoxypyridine. A range of efficient cross-coupling reactions o... Read More about 2-Ethoxy-3-pyridylboronic acid: A versatile reagent for the synthesis of highly-functionalised 3-aryl/heteroaryl-pyridines via Suzuki cross-coupling reactions.

Palladium-catalyzed cross-coupling reactions of pyridylboronic acids with heteroaryl halides bearing a primary amine group: Synthesis of highly substituted bipyridines and pyrazinopyridines (2005)
Journal Article

A range of halogenated aromatics and heteroaromatics bearing a primary amine group are shown to be suitable substrates for Suzuki cross-coupling reactions with arylboronic acids and pyridylboronic acids under standard conditions, without the need for... Read More about Palladium-catalyzed cross-coupling reactions of pyridylboronic acids with heteroaryl halides bearing a primary amine group: Synthesis of highly substituted bipyridines and pyrazinopyridines.

5-Pyrimidylboronic acid and 2-methoxy-5-pyrimidylboronic acid: new heteroarylpyrimidine derivatives via Suzuki cross-coupling reactions (2004)
Journal Article

5-Pyrimidylboronic acid 2 and 2-methoxy-5-pyrimidylboronic acid 4 have been synthesised by lithium-halogen exchange reactions on 5-bromopyrimidine and 2-methoxy-5-bromopyrimidine, respectively, followed by reaction with triisopropylborate. Suzuki cro... Read More about 5-Pyrimidylboronic acid and 2-methoxy-5-pyrimidylboronic acid: new heteroarylpyrimidine derivatives via Suzuki cross-coupling reactions.

Ethynyl pi-extended 2,5-diphenyl-1,3,4-oxadiazoles and 2-phenyl 5-(2-thienyl)-1,3,4-oxadiazoles: synthesis, X-ray crystal structures and optical properties (2004)
Journal Article

2-(4-tert-Butylphenyl)-5-(4-ethynylphenyl)-1,3,4-oxadiazole 1 reacts with a series of heteroaryl iodides under standard Sonogashira cross-coupling conditions (Pd[PPh3](2)Cl-2, CuI, triethylamine, THF) to yield products 2a-g in 40-79% yields (heteroar... Read More about Ethynyl pi-extended 2,5-diphenyl-1,3,4-oxadiazoles and 2-phenyl 5-(2-thienyl)-1,3,4-oxadiazoles: synthesis, X-ray crystal structures and optical properties.

2,5-di(aryleneethynyl)pyrazine derivatives: synthesis, structural and optoelectronic properties, and light-emitting device (2004)
Journal Article

A series of 2,5-di(aryleneethynyl) pyrazine derivatives has been synthesised in 23-41% yields by two-fold reaction of 2,5-dibromo-3,6-dimethylpyrazine 3 with ethynylarenes (arene=phenyl, 2-pyridyl, 4-ethylphenyl, 4-chlorophenyl, 4-biphenyl) under sta... Read More about 2,5-di(aryleneethynyl)pyrazine derivatives: synthesis, structural and optoelectronic properties, and light-emitting device.

Functionalisation reactions of 2,5-diphenyl-1,3,4-oxadiazoles bearing a terminal ethynyl or butadiynyl substituent: X-ray crystal structures of the products (2004)
Journal Article

2-(4-tert-Butylphenyl)-5-(4-ethynylphenyl)-1,3,4-oxadiazole 1 and the butadiyne analogue 2 reacted with triethyl orthoformate in the presence of zinc iodide to give the acetal derivatives 3 and 4 which were hydrolysed with Amberlyst-15 in acetone-wat... Read More about Functionalisation reactions of 2,5-diphenyl-1,3,4-oxadiazoles bearing a terminal ethynyl or butadiynyl substituent: X-ray crystal structures of the products.

Organic light-emitting diodes based on a blend of poly 2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene and an electron transporting material (2004)
Journal Article

Organic light-emitting devices (OLEDs) containing a blend of poly[2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) and an electron transporting material, 2,7-bis[2-(4-tert-butylphenyl)-1,3,4-oxadiazol-5-yl]-9,9-dihexylfluorene have been... Read More about Organic light-emitting diodes based on a blend of poly 2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene and an electron transporting material.

Nanoscale aryleneethynylene molecular wires with reversible fluorenone electrochemistry for self-assembly onto metal surfaces (2004)
Journal Article

Two rigid-rod conjugated molecules (11 and 12) of ca. 4 and 7 nm length, respectively, bearing protected terminal thiol groups have been synthesized via multistep Sonogashira coupling reactions and shown to possess reversible cathodic solution electr... Read More about Nanoscale aryleneethynylene molecular wires with reversible fluorenone electrochemistry for self-assembly onto metal surfaces.

Electrochromic tetrathiafulvalene derivatives functionalised with 2,5-diaryl-1,3,4-oxadiazole chromophores (2004)
Journal Article

Electrochromism has been demonstrated by three novel electrochemically-reversible compounds 3, 4 and 5, which were synthesised by Pd catalysed cross-coupling of iodotrimethylTTF (6) and 2,6(7)-diiodoTTF (7) with the 2,5-diaryl-1,3,4-oxadiazole deriva... Read More about Electrochromic tetrathiafulvalene derivatives functionalised with 2,5-diaryl-1,3,4-oxadiazole chromophores.

New pyrimidine- and fluorene-containing oligo(arylene)s : synthesis, crystal structures, optoelectronic properties and a theoretical study. (2003)
Journal Article

New pyrimidine containing oligo(arylene)s, notably the pyrimidine-fluorene hybrid systems 13-16, have been synthesised by Suzuki cross-coupling methodology. An efficient synthesis of the key reagent 9,9-dihexylfluorene-2,7-diboronic acid 10 from 2,7-... Read More about New pyrimidine- and fluorene-containing oligo(arylene)s : synthesis, crystal structures, optoelectronic properties and a theoretical study..

Phenylene-2,5-dimethylpyrazine co-oligomers: synthesis by Suzuki couplings, X-ray structures of neutral and diprotonated teraryl species and efficient blue emission (2003)
Journal Article

Phenylene-2,5-dimethylpyrazinyl co-oligomers and a dipyridylpyrazine derivative have been synthesised by Suzuki cross-coupling reactions starting from 2,5-dibromo-3,6-dimethylpyrazine. X-Ray crystal structures are reported for two teraryl derivatives... Read More about Phenylene-2,5-dimethylpyrazine co-oligomers: synthesis by Suzuki couplings, X-ray structures of neutral and diprotonated teraryl species and efficient blue emission.

An improved synthesis and structural characterisation of 2-(4-acetylthiophenylethynyl)-4-nitro-5-phenylethynylaniline: The molecule showing high negative differential resistance (NDR) (2003)
Journal Article

2-(4-Acetylthiophenylethynyl)-4-nitro-5-phenyl-ethynylaniline (11) has been synthesised by an improved route, which has many advantages over the literature procedure. A key intermediate is 2-ethynyl-4-nitro-5-phenylethynylaniline (6) which is obtaine... Read More about An improved synthesis and structural characterisation of 2-(4-acetylthiophenylethynyl)-4-nitro-5-phenylethynylaniline: The molecule showing high negative differential resistance (NDR).

New shelf-stable halo- and alkoxy-substituted pyridylboronic acids and their Suzuki cross-coupling reactions to yield heteroarylpyridines (2003)
Journal Article

New shelf-stable pyridylboronic acids have been synthesized: bromine-lithium exchange followed by reaction with triiso-propylborate (TEPB) yielded 2-fluoro-5-pyridylboronic acid (4), 3-bromo-5-pyridylboronic acid (5) and 2-ethoxy-5-pyridylboronic aci... Read More about New shelf-stable halo- and alkoxy-substituted pyridylboronic acids and their Suzuki cross-coupling reactions to yield heteroarylpyridines.

5-Formyl-2-furylboronic acid as a versatile bifunctional reagent for the synthesis of pi-extended heteroarylfuran systems (2003)
Journal Article

5-Formyl-2-furylboronic acid reacts cleanly with a range of heteroaryl bromides under Suzuki-Miyaura cross-coupling conditions to produce 2-formyl-5-heteroarylfuran derivatives. Subsequent Wittig olefination reactions afford pi-conjugated alkene-pyri... Read More about 5-Formyl-2-furylboronic acid as a versatile bifunctional reagent for the synthesis of pi-extended heteroarylfuran systems.

New electron-transporting materials for light emitting diodes: 1,3,4-oxadiazole-pyridine and 1,3,4-oxadiazole-pyrimidine hybrids (2002)
Journal Article

We describe the synthesis of three new isomeric 1,3,4-oxadiazole-pyridine hybrids, namely: 2,6-, 3,5- and 2,4-bis[2-(4-tert-butylphenyl)-1,3,4-oxadiazol-5-yl] pyridine, (PDPy-2,6, PDPy-3,5 and PDPy-2,4, respectively) and a 1,3,4-oxadiazole-pyrimidine... Read More about New electron-transporting materials for light emitting diodes: 1,3,4-oxadiazole-pyridine and 1,3,4-oxadiazole-pyrimidine hybrids.

Synthesis of novel phthalocyanine-tetrathiafulvalene hybrids; Intramolecular fluorescence quenching related to molecular geometry (2002)
Journal Article

A number of silicon phthalocyanine bis-esters have been synthesized and characterized, with axial ligands containing one or more tetrathiafulvalene groups. Variations in the substitution positions around a central aromatic "hinge" within the ligands... Read More about Synthesis of novel phthalocyanine-tetrathiafulvalene hybrids; Intramolecular fluorescence quenching related to molecular geometry.

Functionalized pyridylboronic acids and their Suzuki cross-coupling reactions to yield novel heteroarylpyridines (2002)
Journal Article

2-Bromo-5-pyridylboronic acid 2a, 2-chloro-5-pyridylboronic acid 2b, 2-methoxy-5-pyridylboronic acid 2c, and 5-chloro-2-methoxy-4-pyridylboronic acid 4 have been synthesized and shown to undergo palladium-catalyzed cross-coupling reactions with heter... Read More about Functionalized pyridylboronic acids and their Suzuki cross-coupling reactions to yield novel heteroarylpyridines.

A (π-extended tetrathiafulvalene)-fluorene conjugate. Unusual electrochemistry and charge transfer properties: The first observation of a covalent D²⁺–σ–A˙⁻ redox state (2002)
Journal Article

The synthesis of novel electrochemically amphoteric TTFAQ-sigma-A compounds (TTFAQ = 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene, sigma = saturated spacer, A = polynitrofluorene acceptor) is reported. Their solution redox behavior is chara... Read More about A (π-extended tetrathiafulvalene)-fluorene conjugate. Unusual electrochemistry and charge transfer properties: The first observation of a covalent D²⁺–σ–A˙⁻ redox state.

Protonation and subsequent intramolecular hydrogen bonding as a method to control chain structure and tune luminescence in heteroatomic conjugated polymers (2002)
Journal Article

We report the effects of protonation on the structural and spectroscopic properties of 1,4-dimethoxy-2,5-bis(2-pyridyl)benzene (9) and the related AB coploymer poly{2,5-pyridylene-co-1,4-[2,5- bis(2-ethylhexyloxy)]phenylene} (7). X-ray crystallograph... Read More about Protonation and subsequent intramolecular hydrogen bonding as a method to control chain structure and tune luminescence in heteroatomic conjugated polymers.

Supramolecular architecture of two charge-transfer complexes based on 2,7-(X,X)-4,5-dinitro-9-dicyanomethylenefluorenes (X=NO2 or CN) and tetrathiafulvalene (2002)
Journal Article

The crystal packings of two charge-transfer complexes based on tetrathiafulvalene and substituted fluorenes-2,4,5,7-tetranitro-9-dicyanomethylenefluorene (in complex 1) or 2,7-dicyano-4,5-dinitro-9-dicyanomethylenefluorene (in complex II)-are analyze... Read More about Supramolecular architecture of two charge-transfer complexes based on 2,7-(X,X)-4,5-dinitro-9-dicyanomethylenefluorenes (X=NO2 or CN) and tetrathiafulvalene.

A biosensor for monitoring formaldehyde using a new lipophilic tetrathiafulvalene-tetracyanoquinodimethane salt and a polyurethane membrane (2002)
Journal Article

A format for a disposable screen-printed biosensor was investigated for monitoring formaldehyde. The screen-printed sensor format comprised a working electrode (WE) modified with platinised carbon, a new lipophilic tetrathiafulvalene-tetracyanoquinod... Read More about A biosensor for monitoring formaldehyde using a new lipophilic tetrathiafulvalene-tetracyanoquinodimethane salt and a polyurethane membrane.

pi-Extended nitrofluorene-1,3-dithiole chromophore: enhancing the photoresponse of holographic materials through the balance of intramolecular charge transfer and electron affinity (2001)
Journal Article

The synthesis, electrochemistry, and electron absorption spectra of the novel push-pull type acceptor, 9-{[4,5- bis(hexylthio)-1,3-dithiol-2-ylidene]ethylidene}-2,4,5,7- tetranitrofluorene 3 is reported. A bathochromic shift and increased intensities... Read More about pi-Extended nitrofluorene-1,3-dithiole chromophore: enhancing the photoresponse of holographic materials through the balance of intramolecular charge transfer and electron affinity.

Voltammetric metal cation sensors based on ferrocene derivatives with oxazoline and imine substituents (2001)
Journal Article

Ferrocene derivatives la, lb and 2 containing oxazoline substituents act as efficient voltammetric sensors of Mg2+ and Ca2+ ions in acetonitrile solution in concentrations as low as 10 mol%: a new redox peak appears in the cyclic voltammogram, positi... Read More about Voltammetric metal cation sensors based on ferrocene derivatives with oxazoline and imine substituents.

Synthesis and crystal engineering of new halogenated tetrathiafulvalene (TTF) derivatives and their charge transfer complexes and radical ion salts (2001)
Journal Article

Efficient syntheses are reported for tetraiodotetrathiafulvalene 2, 4-iodo-5-methyl-4',5'- bis(methylsulfanyl)TTF 3, and 4-iodo-4',5'- bis(methylsulfanyl)TTF 4 by iodination, using perfluorohexyl iodide, of lithiated derivatives of the corresponding... Read More about Synthesis and crystal engineering of new halogenated tetrathiafulvalene (TTF) derivatives and their charge transfer complexes and radical ion salts.

Cocrystals of 2-(2,4,5,7-tetranitrofluoren-9- ylidene)propanedinitrile and 2,4,5,7-tetranitrofluoren-9-one with chlorobenzene (2001)
Journal Article

Crystallization of 2,4,5,7-tetranitro-9- (dicyanomethylene)fluorene [DTeF; systematic name: 2-(2,4,5,7- tetranitro-fluorene-9-ylidene)propanedinitrile] and 2,4,5,7- tetranitrofluoren-9-one (TeNF) from chlorobenzene in the presence of pi -donor compou... Read More about Cocrystals of 2-(2,4,5,7-tetranitrofluoren-9- ylidene)propanedinitrile and 2,4,5,7-tetranitrofluoren-9-one with chlorobenzene.

Trialkyltetrathiafulvalene-sigma-tetracyanoanthraquinodimethane (R3TTF-sigma-TCNAQ) diads: Synthesis, intramolecular charge- transfer properties, and X-ray crystal structure (2001)
Journal Article

We report the use of the electron-donating 4,5-dipentyl-4'- methyl-TTF (TTF = tetrathiafulvalene) moiety in combination with the electron acceptor 11,11,12,12- tetracyanoanthraquinodimethane (TCNAQ) unit in the novel D- sigma -A diad molecules 11, 17... Read More about Trialkyltetrathiafulvalene-sigma-tetracyanoanthraquinodimethane (R3TTF-sigma-TCNAQ) diads: Synthesis, intramolecular charge- transfer properties, and X-ray crystal structure.

Molecular saddles. 7. New 9,10-bis(1,3-dithiol-2-ylidene)-9,10- dihydroanthracene cyclophanes: Synthesis, redox properties, and X-ray crystal structures of neutral species and a dication salt (2001)
Journal Article

We report the synthesis of cyclophanes 18-20 by ester-forming macrocyclization reactions of diols 15 and 16 with 1,4- benzenedicarbonyl chloride. Compounds 18 and 19 display a two- electron, quasireversible oxidation wave in the cyclic voltammogram t... Read More about Molecular saddles. 7. New 9,10-bis(1,3-dithiol-2-ylidene)-9,10- dihydroanthracene cyclophanes: Synthesis, redox properties, and X-ray crystal structures of neutral species and a dication salt.

The first tetrathiafulvalene-sigma-polynitrofluorene diads: Low HOMO-LUMO gap, amphoteric redox behavior, and charge transfer properties (2001)
Journal Article

[GRAPHICS] The synthesis, solution redox behavior, EPR, and intramolecular charge transfer properties of novel donor- acceptor diads of TTF-sigma -A type (TTF = substituted tetrathiafulvalene, sigma = saturated spacer, A = polynitrofluorene acceptor)... Read More about The first tetrathiafulvalene-sigma-polynitrofluorene diads: Low HOMO-LUMO gap, amphoteric redox behavior, and charge transfer properties.

Synthesis of conjugated tetrathiafulvalene (TTF)-pi-acceptor molecules - Intramolecular charge transfer and nonlinear optical properties (2001)
Journal Article

We have synthesised new conjugated donor-pi -acceptor (D-pi -A) chromophores 7, 9, and 12-15 in which monosubstituted tetrathiafulvalene (TTF) and trimethyl-TTF units are the donor moieties, connected by ethylenic bridges to electron-deficient benzen... Read More about Synthesis of conjugated tetrathiafulvalene (TTF)-pi-acceptor molecules - Intramolecular charge transfer and nonlinear optical properties.

An efficient pyridine- and oxadiazole-containing hole-blocking material far organic light-emitting diodes: Synthesis, crystal structure, and device performance (2001)
Journal Article

In this paper, we focus on the synthesis and structure of the new bis(1,3,4-oxadiazole) system 2,5-bis[2-(4-tert- butylphenyl)-1,3,4-oxadiazol-5-yl]pyridine (PDPyDP). We have fabricated light-emitting diodes (LEDs) using poly[2-methoxy-5- (2-ethylhex... Read More about An efficient pyridine- and oxadiazole-containing hole-blocking material far organic light-emitting diodes: Synthesis, crystal structure, and device performance.

Synthesis, crystal structure and electrochemistry of a new bimetallic nickel dithiolene complex (NBu4+)(2){C2S4 NiS2C2S2(CO) (2)}(2-). A precursor for molecular conductors (2001)
Journal Article

The bimetallic complex (NBu4+)(2){C2S4[NiS2C2S2(CO)](2)}(2-) has been prepared and its X-ray crystal structure has been determined. The anions are packed in layers parallel to the crystallographic (0 1 0) plane and are intermingled with parallel laye... Read More about Synthesis, crystal structure and electrochemistry of a new bimetallic nickel dithiolene complex (NBu4+)(2){C2S4 NiS2C2S2(CO) (2)}(2-). A precursor for molecular conductors.

Photochemistry of the pi-extended 9,10-bis(1,3-dithiol-2- ylidene)-9,10-dihydroanthracene system: Generation and characterisation of the radical cation, dication, and derived products (2001)
Journal Article

Flash photolysis of bis[4,5-di(methylsulfanyl)1,3-dithiol-2- ylidene]-9,10-dihydroanthracene (1) in chloroform leads to formation of the transient radical cation species 1(.+) which has a diagnostic broad absorption band at lambda (max) approximate t... Read More about Photochemistry of the pi-extended 9,10-bis(1,3-dithiol-2- ylidene)-9,10-dihydroanthracene system: Generation and characterisation of the radical cation, dication, and derived products.

Molecular saddles, 3. Hydroxymethyl-functionalised 9,10- bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene pi-electron donors as synthetic intermediates for supramolecular structures (2001)
Journal Article

The synthesis of new derivatives of 9,10-bis(1,3-dithiol-2- ylidene)-9,10-dihydroanthracene is reported. H-1 NMR studies on compound 4 are consistent with two conformers of the saddle- shaped molecule which interconvert by a boat-boat flipping of the... Read More about Molecular saddles, 3. Hydroxymethyl-functionalised 9,10- bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene pi-electron donors as synthetic intermediates for supramolecular structures.

An investigation of the complexation behaviour of structurally modified tetrathiafulvalene derivatives with the electron deficient cyclophane cyclobis(paraquat-p-phenylene) (2001)
Journal Article

This study has shown that easily oxidisable TTF units form charge-transfer (C-T) complexes with 7 which have the largest reported association constants to date. Replacing the sulfur of the TTF unit with selenium or extending the conjugated link betwe... Read More about An investigation of the complexation behaviour of structurally modified tetrathiafulvalene derivatives with the electron deficient cyclophane cyclobis(paraquat-p-phenylene).

Trimethyltetrathiafulvalene bearing an N-methylpyridinium substituent: Synthesis, crystal structures, and charge transfer properties (2001)
Journal Article

The synthesis of 4,4',5-trimethyl-5'-(4-pyridyl)tetrathiafulva- lene (3), has been accomplished by reaction of the stannylated precursor 2 with 4-bromopyridine. Alkylation of 3 affords the N-methylpyridinium salt 4 which displays intramolecular charg... Read More about Trimethyltetrathiafulvalene bearing an N-methylpyridinium substituent: Synthesis, crystal structures, and charge transfer properties.