Excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines

Xiang Li; Zhiquan Wang; Yuting Gao; Zhengjun Shang; Minghao Ni; Jianli Hua; Bo Li; Ye Chen

doi:10.1016/j.cplett.2019.136800

Excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines

Xiang Li
, Zhiquan Wang
, Yuting Gao
, Zhengjun Shang
, Minghao Ni
, Jianli Hua
, Bo Li^*
, Ye Chen

^*Corresponding author for this work

School of Physics and Electronic Science

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

Abstract

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.

Original language	English
Article number	136800
Journal	Chemical Physics Letters
Volume	736
DOIs	https://doi.org/10.1016/j.cplett.2019.136800
State	Published - Dec 2019

Keywords

Fluorescence dynamic
Intramolecular charge transfer (ICT)
Multi-branched structure
Solvent effect

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10.1016/j.cplett.2019.136800

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@article{87318f876b56491486cc690e4d1c01d1,

title = "Excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines",

abstract = "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.",

keywords = "Fluorescence dynamic, Intramolecular charge transfer (ICT), Multi-branched structure, Solvent effect",

author = "Xiang Li and Zhiquan Wang and Yuting Gao and Zhengjun Shang and Minghao Ni and Jianli Hua and Bo Li and Ye Chen",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = dec,

doi = "10.1016/j.cplett.2019.136800",

language = "英语",

volume = "736",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

}

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

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 -

Excited-state relaxation processes of three newly synthesized multi-branched alkyl-triphenylamine end-capped triazines

Abstract

Keywords

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