Flag-hinge-like highly luminescent chiral nanographenes with twist geometry  

作　　者：Wenying Cui Zhetong Jin Wentao Fu Chengshuo Shen 

机构地区：[1]School of Chemistry and Chemical Engineering,Zhejiang Sci-Tech University,Hangzhou 310000,China

出　　处：《Chinese Chemical Letters》2024年第11期334-339,共6页中国化学快报（英文版）

基　　金：financially supported by the Zhejiang Provincial Natural Science Foundation,China(No.LY23B040003);the Science Foundation of Zhejiang Sci-Tech University,China(No.22062026-Y)。

摘　　要：Nanographenes(NGs)with twisted backbones are emerging as new candidates for chiroptical materials.In this work,we describe a new strategy for synthesizing a[10]twistacene-embedded NG which exhibits a rare flag-hinge-like geometry.By neatly creating steric crowding on the[6]helicene breaches of the NG skeleton,the synthesis only provided homochiral isomers without generating the“meso-”isomer.The formed NGs showed high luminescence with quantum yield up to 52%,and promising circularly polarized luminescence(CPL)performance with|glum|up to 5.0×10^(-3).Besides,these NGs also showed outstanding CPL brightness(BCPL)up to 305 L mol^(-1)cm^(-1)among chiral NGs.

关 键 词：NANOGRAPHENE Twistacene HELICENES CHIRALITY Circularly polarized luminescence 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]