Circularly Polarized Luminescence from Chiral Tetranuclear Copper(I) Iodide Clusters

Li Yao; Guangda Niu; Junze Li; Liang Gao; Xufeng Luo; Bing Xia; Yuhao Liu; Peipei Du; Dehui Li; Chao Chen; Youxuan Zheng; Zewen Xiao; Jiang Tang

doi:10.1021/acs.jpclett.9b03478

Circularly Polarized Luminescence from Chiral Tetranuclear Copper(I) Iodide Clusters

J Phys Chem Lett. 2020 Feb 20;11(4):1255-1260. doi: 10.1021/acs.jpclett.9b03478. Epub 2020 Jan 31.

Authors

Li Yao¹, Guangda Niu¹, Junze Li², Liang Gao¹, Xufeng Luo³, Bing Xia¹, Yuhao Liu¹, Peipei Du¹, Dehui Li², Chao Chen¹, Youxuan Zheng³, Zewen Xiao¹, Jiang Tang^{1

2}

Affiliations

¹ Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan 430074 , China.
² School of Optical and Electronic Information , Huazhong University of Science and Technology , Wuhan 430074 , China.
³ State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China.

PMID: 31990572
DOI: 10.1021/acs.jpclett.9b03478

Abstract

Circularly polarized luminescent (CPL) materials are promising in applications such as 3D displays and quantum communication. Hybrid organic-inorganic copper(I) iodides have been rapidly developed due to their intense photoluminescence and structural diversity; nevertheless, the reported Cu-I clusters rarely show CPL activities. In this study, we introduced chiral organic molecules R/S-methylbenzylammonium (R/S-MBA) into Cu-I inorganic skeletons to achieve chiral tetranuclear (R/S-MBA)₄Cu₄I₄ clusters with intense orange luminescence and CPL activity at room temperature. These enantiomeric (R/S-MBA)₄Cu₄I₄ clusters show oppositely signed circular dichroism (CD) signals, which agree well with their simulated electronic CD spectra. The crystallization-induced helical arrangement of (R/S-MBA)₄Cu₄I₄ clusters and their largely distorted polynuclear configuration demonstrate a new platform for the study of chiral-related properties.