TY - JOUR
T1 - Solvent-dependent dual emission processes in charge-transfer excited states of phenothiazine-triphenyltriazine conformers
AU - Ryu, Tomohiro
AU - Miyata, Kiyoshi
AU - Saigo, Masaki
AU - Shimoda, Yuushi
AU - Tsuchiya, Yoichi
AU - Nakanotani, Hajime
AU - Adachi, Chihaya
AU - Onda, Ken
N1 - Funding Information:
This work was partially supported by JSPS KAKENHI Grant Numbers JP17H06375, JP20H05106, JP20H05676, JP20J21226, and JP21K14590 and by JST, the establishment of university fellowships for the creation of science technology innovation, Grant Number JPMJFS2132. The calculations were performed using the computer resources of the Research Institute for Information Technology, Kyushu University.
Funding Information:
This work was partially supported by JSPS KAKENHI Grant Numbers JP17H06375, JP20H05106, JP20H05676, JP20J21226, and JP21K14590 and by JST, the establishment of university fellowships for the creation of science technology innovation, Grant Number JPMJFS2132. The calculations were performed using the computer resources of the Research Institute for Information Technology, Kyushu University.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/12/16
Y1 - 2022/12/16
N2 - The solvent effects were studied on charge-transfer excited states in a donor–acceptor-type luminescent material, phenothiazine-triphenyltriazine, which has two distinct conformers: quasi-coplanar and perpendicular conformers. The solvent dielectric permittivity dependence of the steady-state photoluminescence spectra using solvent mixtures of toluene and tetrahydrofuran (THF) indicated that the two conformers have nearly identical excited-state dipole moments. The time-resolved photoluminescence and transient absorption spectra in toluene and THF showed different solvent dependences for the two conformers. A detailed analysis of these time-resolved spectra revealed solvent-dependent emission processes in the two conformers.
AB - The solvent effects were studied on charge-transfer excited states in a donor–acceptor-type luminescent material, phenothiazine-triphenyltriazine, which has two distinct conformers: quasi-coplanar and perpendicular conformers. The solvent dielectric permittivity dependence of the steady-state photoluminescence spectra using solvent mixtures of toluene and tetrahydrofuran (THF) indicated that the two conformers have nearly identical excited-state dipole moments. The time-resolved photoluminescence and transient absorption spectra in toluene and THF showed different solvent dependences for the two conformers. A detailed analysis of these time-resolved spectra revealed solvent-dependent emission processes in the two conformers.
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U2 - 10.1016/j.cplett.2022.140155
DO - 10.1016/j.cplett.2022.140155
M3 - Article
AN - SCOPUS:85141314523
SN - 0009-2614
VL - 809
JO - Chemical Physics Letters
JF - Chemical Physics Letters
M1 - 140155
ER -