Positional isomeric effect of monobrominated ending groups within small molecule acceptors on photovoltaic performance.

Wei Wang, Gongchun Li, Yuhao Li, Chun Zhan, Xinhui Lu, Shengqiang Xiao

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Article in RSC advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Wei WangState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology Wuhan 430070 P. R. China shengqiang@whut.edu.cn.ORCID https://orcid.org/0000-0002-3188-4430

Gongchun LiState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology Wuhan 430070 P. R. China shengqiang@whut.edu.cn.

Yuhao LiDepartment of Physics, The Chinese University of Hong Kong Sha Tin Hong Kong SAR 999077 P. R. China xinhui.lu@cuhk.edu.hk.

Chun ZhanState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology Wuhan 430070 P. R. China shengqiang@whut.edu.cn.

Xinhui LuDepartment of Physics, The Chinese University of Hong Kong Sha Tin Hong Kong SAR 999077 P. R. China xinhui.lu@cuhk.edu.hk.

Shengqiang XiaoState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology Wuhan 430070 P. R. China shengqiang@whut.edu.cn.ORCID https://orcid.org/0000-0001-7644-8491

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As an ending acceptor unit (A) within acceptor-donor-acceptor (A-D-A)-type small molecule acceptors (SMAs), monobrominated 1,1-dicyanomethylene-3-indanone (IC-Br) plays a critical role on developing high-performance SMAs and polymer acceptors from polymerizing SMAs. IC-Br is usually a mixture (IC-Br-m) consisting of positional isomeric IC-Br-γ and IC-Br-δ (bromine substituted on the γ and δ positions, respectively). The positional isomeric effect of these monobrominated ending groups has been witnessed to take an important role on regulating the photovoltaic performance. Fully investigating this isomeric effect of monobromination would be of great value for SMAs and even polymer acceptors. In this study, benefitting from the separation of IC-Br-γ and IC-Br-δ from IC-Br-m with high yields, bis(thieno[3,2-

Identifiers

PMID35495533

DOI10.1039/d1ra05426k

PMCPMC9042045

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