Dependence of Excited-State Properties of a Low-Bandgap Photovoltaic Copolymer on Side-Chain Substitution and Solvent

	Dependence of Excited-State Properties of a Low-Bandgap Photovoltaic Copolymer on Side-Chain Substitution and Solvent
	Zhao, Ning-Jiu 1; Zhang, Mao-Jie 2; Liang, Ran 1; Fu, Li-Min 1; Zhang, Wei 1; Ai, Xi-Cheng 1; Hou, Jian-Hui 2; Zhang, Jian-Ping 1
刊名	CHEMSUSCHEM
	2016-07-07
卷号	9 期号:13 页码:1623-1633
关键词	electron transfer polymers solar cells structure-activity relationships substituent effects
英文摘要	The excited-state properties and chain conformations of a new low-bandgap copolymer based on benzo[1,2-b:4,5-b]dithiophene (BDT) and thieno[3,4-b]thiophene with meta-alkoxyphenyl-substituted side chains in solution were investigated comprehensively. Time-resolved spectroscopy suggested that the excited-state properties were sensitive to the conformations of the copolymer in solution. In addition, excited-state dynamics analyses revealed the photogeneration of triplet excited states by intersystem crossing (ISC) at a rate constant of approximate to 0.4x10(9)s(-1) as a result of direct meta-alkoxyphenyl connection to the donor unit BDT irrespective to the macromolecular conformations. According to El-Sayed's rule, the fast ISC herein is correlated with the change of orbital types between singlet and triplet excited states as also shown by quantum chemical calculations. Our studies may shed light on the structure-property relationships of photovoltaic materials.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35210]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Ning-Jiu,Zhang, Mao-Jie,Liang, Ran,et al. Dependence of Excited-State Properties of a Low-Bandgap Photovoltaic Copolymer on Side-Chain Substitution and Solvent[J]. CHEMSUSCHEM,2016,9(13):1623-1633.
APA	Zhao, Ning-Jiu.,Zhang, Mao-Jie.,Liang, Ran.,Fu, Li-Min.,Zhang, Wei.,...&Zhang, Jian-Ping.(2016).Dependence of Excited-State Properties of a Low-Bandgap Photovoltaic Copolymer on Side-Chain Substitution and Solvent.CHEMSUSCHEM,9(13),1623-1633.
MLA	Zhao, Ning-Jiu,et al."Dependence of Excited-State Properties of a Low-Bandgap Photovoltaic Copolymer on Side-Chain Substitution and Solvent".CHEMSUSCHEM 9.13(2016):1623-1633.