Odd Even Effect of Thiophene Chain Lengths on Excited State Properties in Oligo(thienyl ethynylene)-Cored Chromophores

	Odd Even Effect of Thiophene Chain Lengths on Excited State Properties in Oligo(thienyl ethynylene)-Cored Chromophores
	Wang, Xian 1,4; He, Guiying 1,4; Li, Yang 1,4; Kuang, Zhuoran 1,4; Guo, Qianjin 1,4; Wang, Jin-Liang 3; Pei, Jian 2; Xia, Andong 1,4
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2017-04-13
卷号	121 期号:14 页码:7659-7666
英文摘要	In a self-assembly material system, odd even effects are manifested from long-range periodic packing motifs. However, in an amorphous material system, due to long-range disorder, such phenomena are less prone to appear. Here, we report the discovery of a remarkable odd even effect on the excited state properties of a series of conjugated thienyl ethynylene (TE) oligomers with truxene as end-capping units, Tr(TE)(n)Tr (n = 2-6), in solution. Using steady-state and time-resolved spectral measurements, we found the fluorescence quantum yield and excited state dynamics, both showing Odd even alternation with increasing thiophene ethynylene chain lengths in apolar cyclohexane (CHX). It is found that the symmetry properties with different torsional modes dominate the excited state processes. In polar tetrahydrofuran (THF), solution lowers the twisting barriers, leading to symmetry breaking without special odd even alternation over structures. The results presented here will be helpful for understanding odd even effects of conjugated polymers and designing novel photoelectric materials.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/39028]
专题	化学研究所_光化学实验室
作者单位	1.Chinese Acad Sci, BNLMS, Inst Chem, Key Lab Photochem, Beijing 100190, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, Key Labs Bioorgan Chem & Mol Engn & Polymer Chem, Minist Educ,Ctr Soft Matter Sci & Engn, Beijing 100871, Peoples R China 3.Beijing Inst Technol, Beijing Key Lab Photoelect Electrophoton Convers, Sch Chem & Chem Engn, Key Lab Cluster Sci,Minist Educ, Beijing 100081, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xian,He, Guiying,Li, Yang,et al. Odd Even Effect of Thiophene Chain Lengths on Excited State Properties in Oligo(thienyl ethynylene)-Cored Chromophores[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(14):7659-7666.
APA	Wang, Xian.,He, Guiying.,Li, Yang.,Kuang, Zhuoran.,Guo, Qianjin.,...&Xia, Andong.(2017).Odd Even Effect of Thiophene Chain Lengths on Excited State Properties in Oligo(thienyl ethynylene)-Cored Chromophores.JOURNAL OF PHYSICAL CHEMISTRY C,121(14),7659-7666.
MLA	Wang, Xian,et al."Odd Even Effect of Thiophene Chain Lengths on Excited State Properties in Oligo(thienyl ethynylene)-Cored Chromophores".JOURNAL OF PHYSICAL CHEMISTRY C 121.14(2017):7659-7666.