The A-D-A type small molecules with isomeric benzodithiophene cores: Synthesis and influence of isomers on photoelectronic properties

doi:10.1016/j.tet.2016.12.044

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	The A-D-A type small molecules with isomeric benzodithiophene cores: Synthesis and influence of isomers on photoelectronic properties
	Duan, Linrui 2,3; Chen, Jianhua 1,2; Liu, Bin 1,2; Wang, Xiangdong 1,2; Zhu, Weiguo 1,2; Yang, Renqiang 3
	2017-02-02
发表期刊	TETRAHEDRON
卷号	73 期号:5 页码:550-557
摘要	Two isomeric A-D-A type small molecules (SMs) of BDTx-2TVTDPP and BDTy-2TVTDPP were designed and synthesized, which contain different donor (D) center of substituted benzodithiophene (BDT) in backbone, and the same acceptor (A) and bridged units of diketopyrrolopyrrole (DPP) and thienylene-vinylenethiophene (TVT), respectively. Their thermal stability, crystallinity, film morphology and photoelectronic properties were primarily investigated. It was found the BDTx-2TVTDPP with 2,6 substituted BDT unit exhibited a pronouncedly red-shifted and enhanced absorption in solid state and a better crystallinity. In contrast, the BDTy-2TVTDPP with 4,8-substituted BDT unit in backbone exhibited better solubility, deeper HOMO energy level and more smoothed blend film morphology. As a result, the solution-processing BDTy-2TVTDPP based solar cells displayed better photovoltaic properties than the BDTx-2TVTDPP based ones using fullerene derivatives (PC61BM or PC71BM) as electron acceptor. A power conversion efficiency maximum of 2.85% was obtained in the BDTy-2TV1DPP based cells, which is 1.8 times that of the BDTx-2TVTDPP based cells. This study indicates that changing the substituted positions of BDT is available to significantly improve photovoltaic properties for its resulting SMs. (C) 2016 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Benzodithiophene Diketopyrrolopyrrole Isomeric Small Molecules Photovoltaic Performance Organic Solar Cells
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1016/j.tet.2016.12.044
关键词[WOS]	ORGANIC SOLAR-CELLS ; IMPROVED EFFICIENCY ; SIDE-CHAINS ; PERFORMANCE ; DIKETOPYRROLOPYRROLE ; POLYMER ; UNIT ; INDACENODITHIOPHENE ; DESIGN ; PHOTOVOLTAICS
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	Major Cultivation and General Programs of the National Natural Science Foundation of China(51673031 ; Program for Innovative Research Cultivation Team in University of Ministry of Education of China(1337304) ; Natural Science Foundation of Hunan(2015JJ 3113) ; National Key Laboratory of Luminescent Materials and Devices(2014-skllmd-10) ; Research Foundation of Hunan Education Bureau(YB2015B025 ; Hunan Postgraduate Science Foundation for Innovation(CX2014B257 ; 91233112 ; 14C1099) ; CX2015B201) ; 21172187 ; 51403178 ; 51573154)
WOS类目	Chemistry, Organic
WOS记录号	WOS:000392888300015
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/9164
专题	先进有机功能材料研究组
作者单位	1.Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China 2.Xiangtan Univ, Coll Chem, Key Lab Environm Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China 3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Duan, Linrui,Chen, Jianhua,Liu, Bin,et al. The A-D-A type small molecules with isomeric benzodithiophene cores: Synthesis and influence of isomers on photoelectronic properties[J]. TETRAHEDRON,2017,73(5):550-557.
APA	Duan, Linrui,Chen, Jianhua,Liu, Bin,Wang, Xiangdong,Zhu, Weiguo,&Yang, Renqiang.(2017).The A-D-A type small molecules with isomeric benzodithiophene cores: Synthesis and influence of isomers on photoelectronic properties.TETRAHEDRON,73(5),550-557.
MLA	Duan, Linrui,et al."The A-D-A type small molecules with isomeric benzodithiophene cores: Synthesis and influence of isomers on photoelectronic properties".TETRAHEDRON 73.5(2017):550-557.