TY - JOUR
T1 - Excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines
AU - Li, Xiang
AU - Wang, Zhiquan
AU - Gao, Yuting
AU - Shang, Zhengjun
AU - Ni, Minghao
AU - Hua, Jianli
AU - Li, Bo
AU - Chen, Ye
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/12
Y1 - 2019/12
N2 - The excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines ATT-(1–3) are characterized in different solvents by steady-state and time-resolved spectroscopy. In toluene, a weakly polar solvent, the emission originates from the intramolecular charge transfer (ICT) state; in tetrahydrofuran (THF), a strongly polar solvent, the existence of a nonradiative channel from ICT to twisted intramolecular charge transfer (TICT) accelerates the relaxation rate of the ICT state. The rate of the evolution process of ATT-(1–3) increases with increasing number of donor branches, which could ascribed to enhancements in the electron donor and acceptor abilities of the triazines.
AB - The excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines ATT-(1–3) are characterized in different solvents by steady-state and time-resolved spectroscopy. In toluene, a weakly polar solvent, the emission originates from the intramolecular charge transfer (ICT) state; in tetrahydrofuran (THF), a strongly polar solvent, the existence of a nonradiative channel from ICT to twisted intramolecular charge transfer (TICT) accelerates the relaxation rate of the ICT state. The rate of the evolution process of ATT-(1–3) increases with increasing number of donor branches, which could ascribed to enhancements in the electron donor and acceptor abilities of the triazines.
KW - Fluorescence dynamic
KW - Intramolecular charge transfer (ICT)
KW - Multi-branched structure
KW - Solvent effect
UR - https://www.scopus.com/pages/publications/85072975299
U2 - 10.1016/j.cplett.2019.136800
DO - 10.1016/j.cplett.2019.136800
M3 - 文章
AN - SCOPUS:85072975299
SN - 0009-2614
VL - 736
JO - Chemical Physics Letters
JF - Chemical Physics Letters
M1 - 136800
ER -