Triskelion-shaped iridium-helicene NHC complex (2021)
Journal Article
Crassous, J., Gauthier, E. S., Hellou, N., Caytan, E., Fré, S. D., Vanthuyne, N., …Srebro-Hooper, M. (2021). Triskelion-shaped iridium-helicene NHC complex. Inorganic Chemistry Frontiers, 8(16), 3916-3925. https://doi.org/10.1039/d1qi00527h

Enantiopure tris-helicenic chiral-at-iridium complexes have been prepared, constituting the first examples of organometallic metal-tris-helicenes. They have the mer- or fac-Ir(C^C:)3 form, where (C^C:) is an N-heterocyclic carbene ligand N-substitute... Read More about Triskelion-shaped iridium-helicene NHC complex.

Why Do We Still Need a Stable Long Lifetime Deep Blue OLED Emitter? (2021)
Journal Article
Monkman, A. (2022). Why Do We Still Need a Stable Long Lifetime Deep Blue OLED Emitter?. ACS Applied Materials and Interfaces, 14(18), 20463-20467. https://doi.org/10.1021/acsami.1c09189

The need for a high efficiency deep blue organic emitter with narrow emission line width has never been so great. This is driven by the need to simplify the complex OLED stack for displays to enable larger substrate sizes to be used and greatly incre... Read More about Why Do We Still Need a Stable Long Lifetime Deep Blue OLED Emitter?.

A levelized cost of energy approach to select and optimise emerging PV technologies: The relative impact of degradation, cost and initial efficiency (2021)
Journal Article
Nieto-Díaz, B. A., Crossland, A. F., & Groves, C. (2021). A levelized cost of energy approach to select and optimise emerging PV technologies: The relative impact of degradation, cost and initial efficiency. Applied Energy, 299, Article 117302. https://doi.org/10.1016/j.apenergy.2021.117302

A model of levelized cost of energy (LCOE) is presented which accounts for the significant ‘burn-in’ losses common in photovoltaic (PV) devices with organic (OPV) and perovskite (PVK) absorber layers. This model is used to quantify the relative impor... Read More about A levelized cost of energy approach to select and optimise emerging PV technologies: The relative impact of degradation, cost and initial efficiency.

Effects of asymmetric acceptor and donor positioning in deep blue pyridyl-sulfonyl based TADF emitters (2021)
Journal Article
Haykir, G., Aydemir, M., Danos, A., Gumus, S., Hizal, G., Monkman, A. P., & Turksoy, F. (2021). Effects of asymmetric acceptor and donor positioning in deep blue pyridyl-sulfonyl based TADF emitters. Dyes and Pigments, 194, Article 109579. https://doi.org/10.1016/j.dyepig.2021.109579

In this work, we report synthesis and photophysical properties of deep-blue emitting donor-acceptor (D-A) and donor-acceptor-donor (D-A-D) thermally activated delayed fluorescence (TADF) molecules, where the molecules designed using carbazole as a do... Read More about Effects of asymmetric acceptor and donor positioning in deep blue pyridyl-sulfonyl based TADF emitters.

Allocation of Ambipolar Charges on an Organic Diradical with a Vinylene–Phenylenediyne Bridge (2021)
Journal Article
Mayorga-Burrezo, P., Bejarano, F., Calbo, J., Zhao, X., De Sousa, J. A., Lloveras, V., …Crivillers, N. (2021). Allocation of Ambipolar Charges on an Organic Diradical with a Vinylene–Phenylenediyne Bridge. Journal of Physical Chemistry Letters, 12(26), 6159-6164. https://doi.org/10.1021/acs.jpclett.1c01565

Two redox and magnetically active perchlorotriphenylmethyl (•PTM) radical units have been connected as end-capping groups to a bis(phenylene)diyne chain through vinylene linkers. Negative and positive charged species have been generated, and the infl... Read More about Allocation of Ambipolar Charges on an Organic Diradical with a Vinylene–Phenylenediyne Bridge.

Controlling through-space and through-bond intramolecular charge transfer in bridged D–D′–A TADF emitters (2021)
Journal Article
Miranda-Salinas, H., Hung, Y., Chen, Y., Luo, D., Kao, H., Chang, C., …Monkman, A. (2021). Controlling through-space and through-bond intramolecular charge transfer in bridged D–D′–A TADF emitters. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(28), https://doi.org/10.1039/d1tc02316k

Donor–donor′–acceptor molecules where the donor′ bridges the donor and acceptor have different possible interaction pathways for charge transfer. Here we study a series of donor–donor′–acceptor molecules, having the same acceptor and donor′ but diffe... Read More about Controlling through-space and through-bond intramolecular charge transfer in bridged D–D′–A TADF emitters.

A review of oligo(arylene ethynylene) derivatives in molecular junctions (2021)
Journal Article
O'Driscoll, L. J., & Bryce, M. R. (2021). A review of oligo(arylene ethynylene) derivatives in molecular junctions. Nanoscale, 13(24), 10668-10711. https://doi.org/10.1039/d1nr02023d

Oligo(arylene ethynylene) (OAE) derivatives are the “workhorse” molecules of molecular electronics. Their ease of synthesis and flexibility of functionalisation mean that a diverse array of OAE molecular wires have been designed, synthesised and stud... Read More about A review of oligo(arylene ethynylene) derivatives in molecular junctions.

Silylethynyl Substitution for Preventing Aggregate Formation in Perylene Diimides (2021)
Journal Article
Aksoy, E., Danos, A., Li, C., Monkman, A. P., & Varlikli, C. (2021). Silylethynyl Substitution for Preventing Aggregate Formation in Perylene Diimides. Journal of Physical Chemistry C, 125(23), 13041-13049. https://doi.org/10.1021/acs.jpcc.1c03131

Ethynylene-bridged perylene diimides (PDIs) with different sized silane groups have been synthesized as a steric blocking group to prevent the formation of non-radiative trap sites, for example, strong H-aggregates and other dimers or excimers. Excit... Read More about Silylethynyl Substitution for Preventing Aggregate Formation in Perylene Diimides.

Electrical behaviour and evolutionary computation in thin films of bovine brain microtubules (2021)
Journal Article
Vissol-Gaudin, E., Pearson, C., Groves, C., Zeze, D. A., Cantiello, H. F., Cantero, M. D. R., & Petty, M. C. (2021). Electrical behaviour and evolutionary computation in thin films of bovine brain microtubules. Scientific Reports, 11, Article 10776. https://doi.org/10.1038/s41598-021-90260-0

We report on the electrical behaviour of thin films of bovine brain microtubules (MTs). For samples in both their dried and hydrated states, the measured currents reveal a power law dependence on the applied DC voltage. We attribute this to the injec... Read More about Electrical behaviour and evolutionary computation in thin films of bovine brain microtubules.

Continuous Droplet-Actuating Platforms via an Electric Field Gradient: Electrowetting and Liquid Dielectrophoresis (2021)
Journal Article
Frozanpoor, I., Cooke, M. D., Ambukan, V., Gallant, A. J., & Balocco, C. (2021). Continuous Droplet-Actuating Platforms via an Electric Field Gradient: Electrowetting and Liquid Dielectrophoresis. Langmuir, 37(21), 6414-6422. https://doi.org/10.1021/acs.langmuir.1c00329

This work develops a technology for actuating droplets of any size without the requirement for high voltages or active control systems, which are typically found in competitive systems. The droplet actuation relies on two microelectrodes separated by... Read More about Continuous Droplet-Actuating Platforms via an Electric Field Gradient: Electrowetting and Liquid Dielectrophoresis.

Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter (2021)
Journal Article
Tavares, I. G., Enkvist, E., Kaimre, J., Uri, A., & Dias, F. B. (2021). Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter. Journal of Luminescence, 237, Article 118183. https://doi.org/10.1016/j.jlumin.2021.118183

In this work we demonstrate the occurrence of singlet to singlet, and triplet to singlet, intramolecular energy transfer between two thiophene-comprising donors (D) and a central perylene bisimide acceptor (A) covalently linked to each other trough a... Read More about Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter.

Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2 (2021)
Journal Article
Rodriguez-Garcia, M. M., Ćirić, A., Ristić, Z., Williams, J. G., Dramicanin, M., & Evans, I. R. (2021). Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(23), 7474-7484. https://doi.org/10.1039/d1tc01330k

A series of new red phosphors based on apatite-type gadolinium silicate host, Gd9.33−xEux(SiO4)6O2 (0.03 < x < 1.87), have been synthesised and analysed. The phosphors show excellent chemical and thermal stability, losing only 10% of their emission i... Read More about Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2.

Removal of core hole distortion from ionization edges in electron energy loss spectroscopy (2021)
Journal Article
Mendis, B., & Ramasse, Q. (2021). Removal of core hole distortion from ionization edges in electron energy loss spectroscopy. Physical Review B, 103(20), Article 205102. https://doi.org/10.1103/physrevb.103.205102

The near-edge fine structure in electron energy loss spectra is used to probe the electronic bonding environment of materials at high spatial resolution. Often, however, deviations from the ground state electronic properties are observed, due to the... Read More about Removal of core hole distortion from ionization edges in electron energy loss spectroscopy.

The combustion behavior of epoxy‐based multifunctional electrolytes (2021)
Journal Article
Shirshova, N., Rogaume, T., Najmi, H., & Poisson, M. (2022). The combustion behavior of epoxy‐based multifunctional electrolytes. Fire and Materials, 46(1), 192-204. https://doi.org/10.1002/fam.2967

Multifunctional or structural electrolytes are characterized by ionic conductivity high enough to be used in the electrochemical devices and mechanical performance suitable for the structural applications. Preliminary insights are provided into the c... Read More about The combustion behavior of epoxy‐based multifunctional electrolytes.

A review of functional linear carbon chains (oligoynes, polyynes, cumulenes) and their applications as molecular wires in molecular electronics and optoelectronics (2021)
Journal Article
Bryce, M. R. (2021). A review of functional linear carbon chains (oligoynes, polyynes, cumulenes) and their applications as molecular wires in molecular electronics and optoelectronics. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(33), 10524-10546. https://doi.org/10.1039/d1tc01406d

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.

Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials (2021)
Journal Article
Hempe, M., Kukhta, N. A., Danos, A., Fox, M. A., Batsanov, A. S., Monkman, A. P., & Bryce, M. R. (2021). Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials. Chemistry of Materials, 33(9), 3066-3080. https://doi.org/10.1021/acs.chemmater.0c03783

We investigate a series of D–A molecules consisting of spiro[acridan-9,9′-fluorene] as the donor and 2-phenylenepyrimidine as the acceptor. In two of the materials, a spiro center effectively electronically isolates the D unit from (consequently) opt... Read More about Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials.

Programmable droplet actuating platform using liquid dielectrophoresis (2021)
Journal Article
Frozanpoor, I., Cooke, M., Racz, Z., Bossons, I., Ambukan, V., Wood, D., …Balocco, C. (2021). Programmable droplet actuating platform using liquid dielectrophoresis. Journal of Micromechanics and Microengineering, 31(5), https://doi.org/10.1088/1361-6439/abf032

Droplet motion has been a long-standing interest in microfluidics as it is often limited by the high operating voltages, which hampers the development of consumer applications. Forces generated by liquid dielectrophoresis (L-DEP) can enhance surface... Read More about Programmable droplet actuating platform using liquid dielectrophoresis.

Acridone-amine D-A-D thermally activated delayed fluorescence emitters with narrow resolved electroluminescence and their electrochromic properties (2021)
Journal Article
Vasylieva, M., Pander, P., Sharma, B. K., Shaikh, A. M., Kamble, R. M., Dias, F. B., …Data, P. (2021). Acridone-amine D-A-D thermally activated delayed fluorescence emitters with narrow resolved electroluminescence and their electrochromic properties. Electrochimica Acta, 384, Article 138487. https://doi.org/10.1016/j.electacta.2021.138347

Acridones have found their role in luminescent materials for OLEDs. Most interestingly, showing potential as weak charge transfer thermally activated delayed fluorescence (TADF) emitters, providing narrow photoluminescence. In this work, we present a... Read More about Acridone-amine D-A-D thermally activated delayed fluorescence emitters with narrow resolved electroluminescence and their electrochromic properties.

Are the Rates of Dexter Transfer in TADF Hyperfluorescence Systems Optically Accessible? (2021)
Journal Article
Haase, N., Danos, A., Pflumm, C., Stachelek, P., Brütting, W., & Monkman, A. P. (2021). Are the Rates of Dexter Transfer in TADF Hyperfluorescence Systems Optically Accessible?. Materials Horizons, 8(6), 1805-1815. https://doi.org/10.1039/d0mh01666g

Seemingly not, but for unexpected reasons. Combining the triplet harvesting properties of TADF materials with the fast emission rates and colour purity of fluorescent emitters is attractive for developing high performance OLEDs. In this “hyperfluores... Read More about Are the Rates of Dexter Transfer in TADF Hyperfluorescence Systems Optically Accessible?.

Magnifying Grains of Sand, Seeds, and Blades of Grass: Optical Effects in Robert Grosseteste’s De iride (On the Rainbow) (circa 1228–1230) (2021)
Journal Article
White, R. C., Gasper, G. E., McLeish, T. C., Tanner, B. K., Harvey, J. S., Sønnesyn, S. O., …Smithson, H. E. (2021). Magnifying Grains of Sand, Seeds, and Blades of Grass: Optical Effects in Robert Grosseteste’s De iride (On the Rainbow) (circa 1228–1230). Isis: A Journal of the History of Science Society, 112(1), 93-107. https://doi.org/10.1086/713724

In his treatise On the Rainbow (De iride), composed nearly four hundred years before the first known telescope, the English polymath Robert Grosseteste identified three striking optical effects: distant objects can be rendered close by; close-by larg... Read More about Magnifying Grains of Sand, Seeds, and Blades of Grass: Optical Effects in Robert Grosseteste’s De iride (On the Rainbow) (circa 1228–1230).