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Issue 7, 2020
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2,3-Dimethylindole as a donor for novel thermally activated delayed fluorescence emitters

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Abstract

Two indole derivative-based light-emitting molecules are synthesized and studied. They share the same donor unit, 2,3-dimethylindole, and release similar emission colors. In addition, they posses almost the same lowest unoccupied molecular orbital and highest occupied molecular orbital energy levels. However, the discrepancy in the amount of 2,3-dimethylindole donor units in each molecule, results in different energy gaps between singlet and triplet states, and different reverse intersystem crossing process efficiency. OLED devices based on these 2,3-dimethylindole compounds display external quantum efficiencies of 6.3% and 16.5% with greenish blue emission.

Graphical abstract: 2,3-Dimethylindole as a donor for novel thermally activated delayed fluorescence emitters

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Supplementary files

Article information


Submitted
18 Nov 2019
Accepted
09 Jan 2020
First published
10 Jan 2020

New J. Chem., 2020,44, 2961-2965
Article type
Paper

2,3-Dimethylindole as a donor for novel thermally activated delayed fluorescence emitters

M. Liu, M. Shi and H. Meng, New J. Chem., 2020, 44, 2961
DOI: 10.1039/C9NJ05736F

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