Chiral induction and Sb3+doping in indium halides to trigger second harmonic generation and circularly polarized luminescence  

作　　者：Yongjing Deng Feiyang Li Zijian Zhou Mengzhu Wang Yongkang Zhu Jianwei Zhao Shujuan Liu Qiang Zhao 

机构地区：[1]State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors,Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology),Nanjing University of Posts&Telecommunications(NJUPT),Nanjing 210023,China [2]School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China [3]Shenzhen HUASUAN Technology Co.,Ltd.,Shenzhen 518000,China

出　　处：《Chinese Chemical Letters》2024年第8期503-507,共5页中国化学快报（英文版）

基　　金：supported by the National Funds for Distinguished Young Scientists(No.61825503);the National Natural Science Foundation of China(Nos.62288102,62375142,22161160318).

摘　　要：Recently,organic-inorganic hybrid metal halides(HMHs)have attracted extensive attention as promis-ing multifunctional materials by virtue of their structural diversity and tunable photophysical properties.However,it remains a challenge to design HMHs with specific functions on demand.Herein,by introduc-ing R/S-methylbenzylamine(R/S-MBA)and doping Sb^(3+),we have achieved both second harmonic gen-eration(SHG)and circularly polarized luminescence(CPL)properties in lead-free indium halides.The introduction of chiral organic cations can break the symmetry and induce the indium halides to crys-tallize in the chiral space group.The Sb^(3+)with ns2 electronic configuration can serve as the dopants to promote the formation of self-trapped excitons,so as to activate highly efficient luminescence.As a re-sult,the as-prepared Sb3+doped(R/S-MBA)3 InCl6 show not only SHG responses but also CPL signals with luminescence dissymmetry factor of−5.3×10^(−3) and 4.7×10^(−3).This work provides a new inspiration for the exploitation of chiral multifunctional materials.

关 键 词：Hybrid metal halides Self-trapped excitons Chiral induction Second-harmonic generation Circularly polarized luminescence 

分 类 号：TB34[一般工业技术—材料科学与工程]