A Simple Building Block with Noncovalently Conformational Locks towards Constructing Low-Cost and High-Performance Nonfused Ring Electron Acceptors

作     者：Xiao-Bin Gu Jin-Hua Gao Zi-Yang Han Yu-Hao Shi Ya-Nan Wei Yin-Cheng Zhang Qian Peng Zhi-Xiang Wei Xin Zhang Hui Huang Xiao-Bin Gu;Jin-Hua Gao;Zi-Yang Han;Yu-Hao Shi;Ya-Nan Wei;Yin-Cheng Zhang;Qian Peng;Zhi-Xiang Wei;Xin Zhang;Hui Huang

作者机构：College of Materials Science and Opto-Electronic TechnologyCenter of Materials Science and Optoelectronics EngineeringCAS Center for Excellence in Topological Quantum ComputationCAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing100049China School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China CAS Key Laboratory of Nanosystem and Hierarchical FabricationCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2023年第41卷第4期

页      面：556-563,I0008页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(Nos.52103352,51925306 and 52120105006) National Key R&D Program of China(No.2018FYA 0305800) Key Research Program of Chinese Academy of Sciences(No.XDPB08-2) the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB28000000) the Youth Innovation Promotion Association of Chinese Academy of Sciences(No.2022165) the Fundamental Research Funds for the Central Universities 

主　　题：Polymer solar cells Nonfused ring electron acceptors Simple building block Noncovalent conformation locks Reorganization energy 

摘      要：Nonfused ring electron acceptors(NFREAs)have attracted much attention due to their concise synthetic routes and low ***,developing high-performance NFREAs with simple structure remains a great *** this work,a simple building block(POBT)with noncovalently conformational locks(No CLs)was designed and ***-crystal X-ray study indicated the presence of S…O NOCLs in POBT,thus enabling it to possess a coplanar conformation comparable to that of fused-ring *** novel NFREAs based on CPT and POBT were developed,namely TT-CPT and TT-POBT,***,TT-POBT possessed a smaller Stokes shift and a reduced reorganization energy compared with TT-CPT,indicating the introduction of S…O No CLs can enhance the molecular rigidity even if simplifying the molecular *** a result,the TT-POBT-based PSC device afforded an impressive power conversion efficiency of 11.15%,much higher than that of TT-CPT counterpart(7.03%),mainly resulting from the tighterπ-πstacking,improved and balanced charge transport,and more favorable film *** work demonstrates the potential of the simple building block POBT with No CLs towards constructing low-cost and highperformance NFREAs.