摘要
Side-chain engineering as one of the most important molecular design strategies has been widely used to improve photovoltaic effi-ciency of active layer materials.Herein,a series of acceptor-n-donor-n-acceptor typed small molecule(SM)-donors(SL1,SL2,SL3,and SL4),on the basis of high-performance SM-donor BTTzR(SL1)with thiazolo[5,4-d]thiazole as the n-bridging units and 3-butylrho-danine as the terminal electron-withdrawing groups,were designed and synthesized to study the effect of the side-chain substitu-tions of BDT-T on the photovoltaic performanee.
基金
This work was supported by the National Natural Science Foundation of China(Nos.51573120,51773142,51973146 and 21734009)
the Jiangsu Provincial Natural Science Foundation(No.BK20190099)
the Collaborative Innovation Center of Suzhou Nano Science&Technology,the Priority Academic Program De-velopment of Jiangsu Higher Education Institutions.Ministry of Science and Technology of China(No.2016YFA0200700).
