Tuning the donors to control the lifetimes of charge-separated states in triazine-based donor-acceptor systems

被引：19
|
作者：
Lu, Ting [1 ,2 ]
Sun, Haiya [1 ,2 ]
Colley, Nathan D. [3 ,4 ]
Bridgmohan, Chelsea N. [3 ,4 ]
Liu, Dongzhi [1 ,5 ]
Li, Wei [1 ,2 ,5 ]
Hu, Wenping [2 ,6 ]
Zhou, Xueqin [1 ,2 ,5 ]
Wang, Tianyang [1 ,2 ,3 ,4 ]
Wang, Lichang [1 ,2 ,3 ,4 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
[3] Southern Illinois Univ, Dept Chem & Biochem, Carbondale, IL 62901 USA
[4] Southern Illinois Univ, Mat Technol Ctr, Carbondale, IL 62901 USA
[5] Tianjin Engn Res Ctr Funct Fine Chem, Tianjin 300072, Peoples R China
[6] Tianjin Univ, Sch Sci, Tianjin 300072, Peoples R China
来源：
DYES AND PIGMENTS | 2017年 / 136卷
关键词：
Donor-acceptor system; Photoinduced electron transfer; Charge-separated state; Lifetime; Driving force; Reorganization energy; SENSITIZED SOLAR-CELLS; PHOTOINDUCED ELECTRON-TRANSFER; SUPRAMOLECULAR TETRAD; ENERGY-LEVELS; FULLERENE; DYADS; DYES; DERIVATIVES; DISTANCE; DYNAMICS;
D O I：
10.1016/j.dyepig.2016.08.042
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Six donor-acceptor systems with styrene based 9-phenyl carbazole, 4,4'-di(hydro, methyl, methoxy or octyloxy) triphenylamine and 4-methylphenyl indoline derivatives as donors, and s-triazine group as the acceptor were synthesized and characterized. The charge-separated states of these donor-acceptor systems were generated through the effective photoinduced electron transfers from excited donor modules to acceptor modules and had lifetimes ranging from 57 ns to 215 ns. These donor-acceptor systems are capable of fast charge separation, but have extremely slow charge recombination. The back electron transfer processes of these donor-acceptor systems occur in the inverted region of the Marcus curve, The driving forces of back electron transfer and the reorganization energies of electron transfer decrease in the order of 9-phenyl carbazole derivative, 4,4'-di(hydro, methyl, methoxy or octyloxy) triphenylamine derivative and 4-methylphenyl indoline derivative. These two factors work together to determine the different lifetimes of charge-separated states in these donor-acceptor systems. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：404 / 415
页数：12
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