Quenching behavior of thermally activated delayed fluorescence from a donor-acceptor molecule, 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene by O2

Ryoichi Ishimatsu, Yuko Kirino, Chihaya Adachi, Koji Nakano, Toshihiko Imato

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We describe the quenching behavior of thermally activated delayed fluorescence (TADF) from 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) by O2 in bis(2-ethylhexyl)sebacate (DOS). Importantly, the high quantum yield of photoluminescence (φPL = 0.93) with efficient TADF was dramatically decreased by O2. The quenching rate constants of the S1 and T1 states were estimated to be in the order of 109 and 108 s-1 M-1, respectively. A DOS-plasticized polystyrene film containing 4CzIPN was prepared for optical O2 sensing to determine O2 concentration.

Original languageEnglish
Pages (from-to)1183-1185
Number of pages3
JournalChemistry Letters
Volume45
Issue number10
DOIs
Publication statusPublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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