Bernard, Ronit Sebastine and Sych, Galyna and Nasiri, Sohrab and Bezvikonnyi, Oleksandr and Volyniuk, Dmytro and Simokaitiene, Jurate and Bucinskas, Audrius and Gudeika, Dalius and Ariffin, Azhar and Grazulevicius, Juozas V. (2021) Triphenylethylene-based emitters exhibiting aggregation induced emission enhancement and balanced bipolar charge transport for blue non-doped organic light-emitting diodes. Synthetic Metals, 271. ISSN 0379-6779, DOI https://doi.org/10.1016/j.synthmet.2020.116641.
Full text not available from this repository.Abstract
New triphenylethylene-based derivatives, containing 2,6-di-tert-butylcarbazole or 9,9-dimethyl-9,10-dihydroacridine as donor moieties and phenylene or tetrafluorophenylene linking bridges were synthesised by Heck coupling and characterized. The synthesized compounds emitted blue light in the solid state with emission maxima in the range of 478-487 nm and photoluminescence quantum yields of 16-29%. In thermogravimetric analysis they demonstrated sublimation with 5% weight loss temperatures in the range of 307-355 degrees C. They exhibited glass-forming properties with glass-transition temperatures of 89-123 degrees C. The solid-state ionization potentials and electrochemical band gaps ranged from 5.88 to 6.37 eV and from 3.30 to 3.57 eV, respectively. Three compounds demonstrated bipolar semiconducting properties. Derivative of triphenylethylene and 2,6-ditert-butylcarbazole with phenylene bridge showed highest hole and electron drift mobilities reaching 3.07 x 10(-3) cm(2)/Vs and 4.2 x 10(-3) cm(2)/Vs respectively at high electric field. Utilizing compounds in organic light emitting diodes as emitters external quantum efficiency of 2% was observed.
| Item Type: | Article |
|---|---|
| Funders: | Research Council of Lithuania (LMTLT)[S-MIP-20-42] |
| Uncontrolled Keywords: | Triphenylethylene;Aggregation induced emission enhancement; Carbazole;Acridan;Ionization potential;Photophysical properties;Non-doped OLEDs |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 12 Sep 2022 06:51 |
| Last Modified: | 12 Sep 2022 06:51 |
| URI: | http://eprints.um.edu.my/id/eprint/34329 |
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