CPL-active hybrid copper(Ⅰ)halides enabled by cation inclusion with chiral crown-ether  

作　　者：Peng Fan Li-Xuan Cai Xiao-Fang Duan Fan Yin Chen-Chen Li Zhong-Hua Deng Xiao-Zhen Li Qing-Fu Sun 

机构地区：[1]College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350117,China [2]Strait Institute of Flexible Electronics(Future Technologies),Fujian Key Laboratory of Flexible Electronics,Fujian Normal University and Strait Laboratory of Flexible Electronics,Fuzhou 350117,China [3]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [4]Fujian College,University of Chinese Academy of Sciences,Fuzhou 350002,China

出　　处：《Science China Chemistry》2024年第10期3283-3290,共8页中国科学（化学英文版）

基　　金：supported by the Science Foundation of Fujian Province(2021J02016,2023J01528);the National Natural Science Foundation of China(21901245,22171264)。

摘　　要：Chiral hybrid metal halides with high photoluminescence quantum yield(PLQY)and superior dissymmetry factor(g_(lum))are promising candidates for circularly polarized luminescence(CPL)emitting sources.However,it is a great challenge to achieve both high g_(lum)and large PLQY.Here,we report a new supramolecular strategy to fabricate chiral hybrid Cu(Ⅰ)-halides with nearunity quantum yields and intense CPL emissions.The dissymmetry factor can be dramatically modulated by tuning the hostguest complexations.Attributing to the chirality and variable conformations of the host-guest complexes,a series of chiral[G@L^(R/S)]_(2)Cu_(4)I_(6)have been prepared.The incorporation of different cations within the chiral L^(R/S)hosts leads to variations of packing modes along the c-axis and different extent of distortions in the[Cu_(4)I_(6)]_(2)-polyhedra.Among them,[H_(3)O@L^(R/S)]+cations are stacked based on Van der Waals interactions and hierarchically self-assemble into a right/left-handed helix in[H_(3)O@L^(R/S)]_(2)Cu_(4)I_(6),which results in a high g_(lum)of-7×10^(-3)and a large PLQY of 96.92%.Notably,[G@L^(R/S)]_(2)Cu_(4)I_(6)shows promising applications in single-component white light emitting diodes(WLEDs),exhibiting a maximum dissymmetry factor of-1.2×10^(-3).The effective host-guest complexation and oriented hierarchical self-assembly provide an effective strategy for the development of high-performance CPL materials.

关 键 词：host-guest interaction circularly polarized luminescence copper iodide cluster hierarchical self-assembly CHIRALITY 

分 类 号：TB34[一般工业技术—材料科学与工程]