Thermally Activated Delayed Fluorescence Properties of Trioxoazatriangulene Derivatives Modified with Electron Donating Groups

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Youichi Tsuchiya
  • Yuma Ishikawa
  • Sang-Hoon Lee
  • Jean-Luc Brédas
  • Hajime Nakanotani
  • Chihaya Adachi

Detail(s)

Original languageEnglish
Article number2002174
Journal / PublicationAdvanced Optical Materials
Volume9
Issue number14
Online published3 Mar 2021
Publication statusPublished - 10 Jul 2021
Externally publishedYes

Abstract

With the aim of achieving high-performance thermally activated delayed fluorescence, a series of trioxoazatriangulene derivatives are systematically developed by modifying the donor substituents. The emission colors are shifted from green to greenish-yellow and to yellow with rather broad spectral widths of 70–95 nm by introducing carbazole, triphenylamine, or diphenylamine donor units, indicating that each emission originates from a charge-transfer transition. On the other hand, the trioxoazatriangulene modified with three diphenylamines shows orange emission with a narrow emission spectrum (45 nm), suggesting that the transition mainly originates from a multiple resonance effect.

Research Area(s)

  • multiple resonance effect, thermally activated delayed fluorescence, trioxoazatriangulenes

Citation Format(s)

Thermally Activated Delayed Fluorescence Properties of Trioxoazatriangulene Derivatives Modified with Electron Donating Groups. / Tsuchiya, Youichi; Ishikawa, Yuma; Lee, Sang-Hoon; Chen, Xian-Kai; Brédas, Jean-Luc; Nakanotani, Hajime; Adachi, Chihaya.

In: Advanced Optical Materials, Vol. 9, No. 14, 2002174, 10.07.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review