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Purcell effect investigation in organic Tamm plasmon structures (2018)
Journal Article
Morozov, K., Ivanov, K., Selenin, N., Mikhrin, S., Sa Pereira, D. D., Menelaou, C., Monkman, A., & Kaliteevski, M. (2018). Purcell effect investigation in organic Tamm plasmon structures. Journal of Physics: Conference Series, 1135, Article 012082. https://doi.org/10.1088/1742-6596/1135/1/012082

We provide a theoretical and experimental investigation of a Purcell enhancement in a Tamm-plasmon based microcavity structure with an organic (4,4'-Bis(N-carbazolyl)−l,l'- biphenyl (CBP)) active layer. The microcavity structure was fabricated using... Read More about Purcell effect investigation in organic Tamm plasmon structures.

Direct observation of stress relaxation process in 4H-SiC homoepitaxial layers via in-situ synchrotron X-ray topography (2018)
Presentation / Conference Contribution
Guo, J., Yang, Y., Raghothamachar, B., Dudley, M., Welt, S., Danilewsky, A., McNally, P., & Tanner, B. (2018, December). Direct observation of stress relaxation process in 4H-SiC homoepitaxial layers via in-situ synchrotron X-ray topography. Presented at 2017 International Conference on Silicon Carbide and Related Materials, Washington DC

Spontaneous emission enhancement in planar metal-organic structures (2018)
Journal Article
Morozov, K., Ivanov, K., Selenin, N., Mikhrin, S., Sa Pereira, D. D., Menelaou, C., Monkman, A., & Kaliteevski, M. (2018). Spontaneous emission enhancement in planar metal-organic structures. Journal of Physics: Conference Series, 1135, Article 012034. https://doi.org/10.1088/1742-6596/1135/1/012034

We provide an experimental investigation of a Purcell enhancement in a silver-organic periodic structure with an organic material CBP (4,4'-Bis(N-carbazolyl)-1,1'-biphenyl). Were fabricated two structures using a thermal evaporation technique with a... Read More about Spontaneous emission enhancement in planar metal-organic structures.

Time-resolved Photophysical Characterization of Triplet-Harvesting Organic Compounds at Oxygen-Free Environment Using an iCCD Camera (2018)
Journal Article
Pander, P., Data1, P., & Dias, F. B. (2018). Time-resolved Photophysical Characterization of Triplet-Harvesting Organic Compounds at Oxygen-Free Environment Using an iCCD Camera. Journal of Visualized Experiments, 142, Article e56614. https://doi.org/10.3791/56614

Here, we present a sensible method of the acquisition and analysis of time-resolved photoluminescence using an ultrafast iCCD camera. This system enables the acquisition of photoluminescence spectra covering the time regime from nanoseconds up to 0.1... Read More about Time-resolved Photophysical Characterization of Triplet-Harvesting Organic Compounds at Oxygen-Free Environment Using an iCCD Camera.

In Vitro and in Cellulo Sensing of Transition Metals Using Time-Resolved Fluorescence Spectroscopy and Microscopy (2018)
Journal Article
Pal, R., Barker, A. C., Hummel, D., & Pålsson, L. (2019). In Vitro and in Cellulo Sensing of Transition Metals Using Time-Resolved Fluorescence Spectroscopy and Microscopy. Journal of Fluorescence, 29(1), 255-263. https://doi.org/10.1007/s10895-018-2335-z

In this work we demonstrate that time domain techniques can be used successfully to monitor realtively weak modulations of the fluorescence in sensing applications. The metal sensing complex Newport Green DCF™ can detect selected transition metals in... Read More about In Vitro and in Cellulo Sensing of Transition Metals Using Time-Resolved Fluorescence Spectroscopy and Microscopy.

Mobility Evaluation of [1]Benzothieno[3,2‑b][1]benzothiophene Derivatives: Limitation and Impact on Charge Transport (2018)
Journal Article
Wawrzinek, R., Sobus, J., Chaudhry, M. U., Ahmad, V., Grosjean, A., Clegg, J. K., Namdas, E. B., & Lo, S.-C. (2019). Mobility Evaluation of [1]Benzothieno[3,2‑b][1]benzothiophene Derivatives: Limitation and Impact on Charge Transport. ACS Applied Materials and Interfaces, 11(3), 3271-3279. https://doi.org/10.1021/acsami.8b16158

Amongst contemporary semiconductors many of the best performing materials are based on [1]benzothieno[3,2-b][1]benzothiophene (BTBT). Alkylated derivatives of these small molecules not only provide high hole mobilities but can also be easily processe... Read More about Mobility Evaluation of [1]Benzothieno[3,2‑b][1]benzothiophene Derivatives: Limitation and Impact on Charge Transport.

On the Operational, shelf life and degradation mechanism in polymer field effect transistors (2018)
Journal Article
Iqbal, M. J., Haq, H., Riaz, S., Raza, M. A., Iqbal, M. Z., Chaudhry, M. U., & Naseem, S. (2019). On the Operational, shelf life and degradation mechanism in polymer field effect transistors. Superlattices and Microstructures, 126, 125-131. https://doi.org/10.1016/j.spmi.2018.12.022

Organic Field Effect Transistors (OFETs) have shown great potential for future electronic technologies due to their low-cost solution processing, mechanical flexibility and potential applications for large area displays. One of the big obstacles in t... Read More about On the Operational, shelf life and degradation mechanism in polymer field effect transistors.

Transition from Tunneling Leakage Current to Molecular Tunneling in Single-Molecule Junctions (2018)
Journal Article
Liu, J., Zhao, X., Zheng, J., Huang, X., Tang, Y., Wang, F., Li, R., Pi, J., Huang, C., Wang, L., Yang, Y., Shi, J., Mao, B.-W., Tian, Z.-Q., Bryce, M. R., & Hong, W. (2019). Transition from Tunneling Leakage Current to Molecular Tunneling in Single-Molecule Junctions. Chem, 5(2), 390-401. https://doi.org/10.1016/j.chempr.2018.11.002

The tunneling leakage current will be a major quantum obstacle during miniaturization in the semiconductor industry down to the scale of several nanometers. At this scale, to promote charge transport and overcome the tunneling leakage current between... Read More about Transition from Tunneling Leakage Current to Molecular Tunneling in Single-Molecule Junctions.

AIE Multinuclear Ir(III) Complexes for Biocompatible Organic Nanoparticles with Highly Enhanced Photodynamic Performance (2018)
Journal Article
Zhang, L., Li, Y., Che, W., Zhu, D., Li, G., Xie, Z., Song, N., Liu, S., Tang, B. Z., Liu, X., Su, Z., & Bryce, M. R. (2019). AIE Multinuclear Ir(III) Complexes for Biocompatible Organic Nanoparticles with Highly Enhanced Photodynamic Performance. Advanced Science, 6(5), Article 1802050. https://doi.org/10.1002/advs.201802050

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
Kukhta, N. A., Batsanov, A. S., Bryce, M. R., & Monkman, A. P. (2018). Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters. Journal of Physical Chemistry C, 122(50), 28564-28575. https://doi.org/10.1021/acs.jpcc.8b10867

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.

An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties (2018)
Journal Article
Pashazadeh, R., Pander, P., Bucinskas, A., Skabara, P. J., Dias, F. B., & Grazulevicius, J. V. (2018). An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties. Chemical Communications, 54(98), 13857-13860. https://doi.org/10.1039/c8cc06981f

The influence of phenyl linkage and donor strength on the photophysical properties of new derivatives of quinoxaline-containing iminodibenzyl and iminostilbene moieties is studied. The donor–acceptor derivatives showed dual thermally activated delaye... Read More about An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties.

Thermoelectric Properties of 2,7-Dipyridylfluorene Derivatives in Single-Molecule Junctions (2018)
Journal Article
Yzambart, G., Rincón-García, L., Al-Jobory, A. A., Ismael, A. K., Rubio-Bollinger, G., Lambert, C. J., Agraït, N., & Bryce, M. R. (2018). Thermoelectric Properties of 2,7-Dipyridylfluorene Derivatives in Single-Molecule Junctions. Journal of Physical Chemistry C, 122(48), 27198-27204. https://doi.org/10.1021/acs.jpcc.8b08488

A series of 2,7-dipyridylfluorene derivatives have been synthesized with different substituents (2H, 2Me, 2OMe, 2CF3, and O) at the C(9) position. Experimental measurements on gold|single-molecule|gold junctions, using a modified scanning tunneling m... Read More about Thermoelectric Properties of 2,7-Dipyridylfluorene Derivatives in Single-Molecule Junctions.

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes (2018)
Journal Article
de Sa Pereira, D., Monkman, A. P., & Data, P. (2018). Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes. Journal of Visualized Experiments, Article e56593. https://doi.org/10.3791/56593

A method for producing simple and efficient thermally-activated delayed fluorescence organic light-emitting diodes (OLEDs) based on guest-host or exciplex donor-acceptor emitters is presented. With a step-by-step procedure, readers will be able to re... Read More about Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes.

Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence (2018)
Journal Article
Chen, C., Huang, R., Batsanov, A., Pander, P., Hsu, Y.-T., Chi, Z., Dias, F., & Bryce, M. R. (2018). Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence. Angewandte Chemie, 130(50), 16645-16649. https://doi.org/10.1002/ange.201809945

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
Congrave, D. G., Batsanov, A. S., & Bryce, M. R. (2018). Highly luminescent 2-phenylpyridine-free diiridium complexes with bulky 1,2-diarylimidazole cyclometalating ligands. Dalton Transactions, 47(46), 16524-16533. https://doi.org/10.1039/c8dt04043e

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
Ma, X., Liang, J., Bai, F., Ye, K., Xu, J., Zhu, D., & Bryce, M. R. (2018). New Mixed-C^N Ligand Tris-cyclometalated Ir(III) Complexes for Highly-Efficient Green Organic Light-Emitting Diodes with Low Efficiency Roll-off. European Journal of Inorganic Chemistry, 2018(42), 4614-4621. https://doi.org/10.1002/ejic.201800550

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.