TY - JOUR
T1 - Aggregation-induced emission active thermally-activated delayed fluorescence materials possessing N-heterocycle and sulfonyl groups
AU - Matsui, Yasunori
AU - Yokoyama, Yudai
AU - Ogaki, Takuya
AU - Ishiharaguchi, Kenta
AU - Niwa, Akitsugu
AU - Ohta, Eisuke
AU - Saigo, Masaki
AU - Miyata, Kiyoshi
AU - Onda, Ken
AU - Naito, Hiroyoshi
AU - Ikeda, Hiroshi
N1 - Funding Information:
This paper is dedicated to the memory of Emeritus Prof. Toshio Mukai and Emeritus Prof. Tsutomu Miyashi at Tohoku University. This study was partially supported by JSPS KAKENHI Grant Numbers JP17H06371, JP17H06375, JP18K14202, JP19H00888, JP19H02599, JP20H02716, JP20H05106, JP20K15264, JP20K21007, JP21H04564, JP21H05494, and JP24109009. KM also acknowledges support of Qdai-jump Research Program Wakaba Challenge.
Publisher Copyright:
© 2022 The Royal Society of Chemistry
PY - 2022
Y1 - 2022
N2 - Novel thermally-activated delayed fluorescence (TADF) materials 2Cz2SB and 2Mi2SB, possessing N-heterocycle and arylsulfonyl groups, were synthesized and their photophysical properties in solution and the solid state were characterized. 2Cz2SB and 2Mi2SB exhibit typical TADF characteristics and aggregation-induced emission or crystallization-induced emission behaviour. Specifically, they display a blueshift of photoluminescence wavelength and an increase in photoluminescence quantum yield (ΦPL) in the aggregate and solid states, owing to suppression of thermal deactivation. The results of time-resolved IR analysis suggest that aggregate and solid state promoted suppression of geometrical changes in the excited state causes the observed increases in ΦPL
AB - Novel thermally-activated delayed fluorescence (TADF) materials 2Cz2SB and 2Mi2SB, possessing N-heterocycle and arylsulfonyl groups, were synthesized and their photophysical properties in solution and the solid state were characterized. 2Cz2SB and 2Mi2SB exhibit typical TADF characteristics and aggregation-induced emission or crystallization-induced emission behaviour. Specifically, they display a blueshift of photoluminescence wavelength and an increase in photoluminescence quantum yield (ΦPL) in the aggregate and solid states, owing to suppression of thermal deactivation. The results of time-resolved IR analysis suggest that aggregate and solid state promoted suppression of geometrical changes in the excited state causes the observed increases in ΦPL
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U2 - 10.1039/d1tc05196b
DO - 10.1039/d1tc05196b
M3 - Article
AN - SCOPUS:85128137489
SN - 2050-7526
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
ER -