Sub-microsecond TADF emission in D-D¤-A emitters

Morgan Auffray; Umamahesh Balijapalli; Jean Charles Maurice Ribierre; Youichi Tsuchiya; Chihaya Adachi

doi:10.1246/cl.200337

Sub-microsecond TADF emission in D-D¤-A emitters

Morgan Auffray, Umamahesh Balijapalli, Jean Charles Maurice Ribierre, Youichi Tsuchiya, Chihaya Adachi

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A new series of donor-donor¤-acceptor molecules (D-D¤-A design) is introduced. Due to different molecular configurations of the emitters, multiple triplet states were detected and happen to drive one thermally activated delayed fluorescence (TADF) with very short lifetime of the order of nanoseconds. A longer TADF component of microsecond order was also observed, thus showing an interesting case of dual upconversion. These results reveal how TADF becomes efficient enough to overwhelm the prompt fluorescence with the assistance of vibrational and rotational motions.

Original language	English
Pages (from-to)	932-935
Number of pages	4
Journal	Chemistry Letters
Volume	49
Issue number	8
DOIs	https://doi.org/10.1246/cl.200337
Publication status	Published - Aug 5 2020

All Science Journal Classification (ASJC) codes

Chemistry(all)

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10.1246/cl.200337

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title = "Sub-microsecond TADF emission in D-D¤-A emitters",

abstract = "A new series of donor-donor¤-acceptor molecules (D-D¤-A design) is introduced. Due to different molecular configurations of the emitters, multiple triplet states were detected and happen to drive one thermally activated delayed fluorescence (TADF) with very short lifetime of the order of nanoseconds. A longer TADF component of microsecond order was also observed, thus showing an interesting case of dual upconversion. These results reveal how TADF becomes efficient enough to overwhelm the prompt fluorescence with the assistance of vibrational and rotational motions.",

author = "Morgan Auffray and Umamahesh Balijapalli and Ribierre, {Jean Charles Maurice} and Youichi Tsuchiya and Chihaya Adachi",

note = "Funding Information: The authors are grateful to Professor Katsumi Tokumaru, Professor Jean-Luc Bredas, Dr. Anthony D{\textquoteright}Aleo and Dr. Xiankai Chen for insightful discussions on the photophysical study of these materials. They also acknowledge funding through the JSPS KAKENHI Grant 17H01232. Publisher Copyright: {\textcopyright} 2020 The Chemical Society of Japan",

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doi = "10.1246/cl.200337",

language = "English",

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AU - Auffray, Morgan

AU - Balijapalli, Umamahesh

AU - Ribierre, Jean Charles Maurice

AU - Tsuchiya, Youichi

AU - Adachi, Chihaya

N1 - Funding Information: The authors are grateful to Professor Katsumi Tokumaru, Professor Jean-Luc Bredas, Dr. Anthony D’Aleo and Dr. Xiankai Chen for insightful discussions on the photophysical study of these materials. They also acknowledge funding through the JSPS KAKENHI Grant 17H01232. Publisher Copyright: © 2020 The Chemical Society of Japan

PY - 2020/8/5

Y1 - 2020/8/5

N2 - A new series of donor-donor¤-acceptor molecules (D-D¤-A design) is introduced. Due to different molecular configurations of the emitters, multiple triplet states were detected and happen to drive one thermally activated delayed fluorescence (TADF) with very short lifetime of the order of nanoseconds. A longer TADF component of microsecond order was also observed, thus showing an interesting case of dual upconversion. These results reveal how TADF becomes efficient enough to overwhelm the prompt fluorescence with the assistance of vibrational and rotational motions.

AB - A new series of donor-donor¤-acceptor molecules (D-D¤-A design) is introduced. Due to different molecular configurations of the emitters, multiple triplet states were detected and happen to drive one thermally activated delayed fluorescence (TADF) with very short lifetime of the order of nanoseconds. A longer TADF component of microsecond order was also observed, thus showing an interesting case of dual upconversion. These results reveal how TADF becomes efficient enough to overwhelm the prompt fluorescence with the assistance of vibrational and rotational motions.

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ER -

Sub-microsecond TADF emission in D-D¤-A emitters

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