Dynamic Mechanism of Relaxation Paths Occurring in TPA-DCPP: Roles of Solvent and Temperature

doi:10.1007/s40242-017-6506-2

高等学校化学研究 ›› 2017, Vol. 33 ›› Issue (3): 400-405.doi: 10.1007/s40242-017-6506-2

Dynamic Mechanism of Relaxation Paths Occurring in TPA-DCPP: Roles of Solvent and Temperature

ZHONG Qiulin¹, CHEN Ying¹, WANG Yinghui^1,3, CHI Xiaochun¹, WANG Yue², NI Moucui¹, ZHANG Hanzhuang¹

1. Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun 130012, P. R. China;
2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China;
3. Department of Chemistry, University of California at Irvine, California 92697-2025, USA

收稿日期:2016-12-27 修回日期:2017-01-24 出版日期:2017-06-01 发布日期:2017-04-11
通讯作者: WANG Yinghui,E-mail:yinghui_wang@jlu.edu.cn;ZHANG Hanzhuang,E-mail:zhanghz@jlu.edu.cn E-mail:yinghui_wang@jlu.edu.cn;zhanghz@jlu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(Nos.51502109, 21573094, 11274142, 11474131), the Science and Technology Projects in the 13th Five-year Plan in the Education Department of Jilin Province, China(No.2016-402), the National Fund for Fostering Talents of Basic Science, China(No.J1103202) and the Chinese Scholarship Council for Providing Financial Support During Visiting University of California at Irvine, USA.

Dynamic Mechanism of Relaxation Paths Occurring in TPA-DCPP: Roles of Solvent and Temperature

ZHONG Qiulin¹, CHEN Ying¹, WANG Yinghui^1,3, CHI Xiaochun¹, WANG Yue², NI Moucui¹, ZHANG Hanzhuang¹

1. Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun 130012, P. R. China;
2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China;
3. Department of Chemistry, University of California at Irvine, California 92697-2025, USA

Received:2016-12-27 Revised:2017-01-24 Online:2017-06-01 Published:2017-04-11
Contact: WANG Yinghui,E-mail:yinghui_wang@jlu.edu.cn;ZHANG Hanzhuang,E-mail:zhanghz@jlu.edu.cn E-mail:yinghui_wang@jlu.edu.cn;zhanghz@jlu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.51502109, 21573094, 11274142, 11474131), the Science and Technology Projects in the 13th Five-year Plan in the Education Department of Jilin Province, China(No.2016-402), the National Fund for Fostering Talents of Basic Science, China(No.J1103202) and the Chinese Scholarship Council for Providing Financial Support During Visiting University of California at Irvine, USA.

摘要/Abstract

摘要：

The relaxation paths for triphenylamine(TPA)-2,3-dicyanopyrazino phenanthrene(DCPP), which has a pull-push structure, were investigated via steady-state, time-resolved spectroscopy involving transient absorption and time-correlated single photon counting. By changing the solvent polarity we found that an intramolecular charge transfer(ICT) state acting as a "bright" state was responsible for the fluorescence character of TPA-DCPP. Meanwhile, a "dark" state gradually appeared and competed with the ICT state. This was likely to be responsible for the polarity-dependent evolution of fluorescence intensity and fluorescence lifetime. The temperature-dependent fluorescence character of the TPA-DCPP in toluene exhibited ICT processes at high temperatures prior to the relaxation path from the initial excited state to the ground state. Our results provide useful insight into the optoelectronic properties of these kinds of molecules.

关键词: Transient absorption spectroscopy, Ultrafast dynamics, Temperature-dependent, Polarity-dependent, In-tramolecular charge transfer state

Abstract:

Key words: Transient absorption spectroscopy, Ultrafast dynamics, Temperature-dependent, Polarity-dependent, In-tramolecular charge transfer state

ZHONG Qiulin, CHEN Ying, WANG Yinghui, CHI Xiaochun, WANG Yue, NI Moucui, ZHANG Hanzhuang. Dynamic Mechanism of Relaxation Paths Occurring in TPA-DCPP: Roles of Solvent and Temperature[J]. 高等学校化学研究, 2017, 33(3): 400-405.

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Dynamic Mechanism of Relaxation Paths Occurring in TPA-DCPP: Roles of Solvent and Temperature

Dynamic Mechanism of Relaxation Paths Occurring in TPA-DCPP: Roles of Solvent and Temperature

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