Rigid Phase Formation and Sb 3+ Doping of Tin (IV) Halide Hybrids toward Photoluminescence Enhancement and Tuning for Anti‐Counterfeiting and Information Encryption

作者：Jiance Jin, Yuzhen Wang, Kai Han, Zhiguo Xia · 发表于：Angewandte Chemie · 年份：2024 · DOI：10.1002/ange.202408653 · 被引用次数：12 · 研究领域：Nanocluster Synthesis and Applications、Luminescence Properties of Advanced Materials、Inorganic Chemistry and Materials

Abstract Multi‐excitonic emitting materials in luminescent metal halides are emerging candidates for anti‐counterfeiting and information encryption applications. Herein, ATPP 2 SnCl 6 (ATPP=acetonyltriphenylphosphonium) phase was designed and synthesized by rationally choosing emissive organic reagent of ATPPCl and non‐toxic stable metal ions of Sn 4+ , and Sb 3+ was further doped into ATPP 2 SnCl 6 to tune the photoluminescence with external self‐trapped excitons emission. The derived non‐toxic ATPP 2 SnCl 6 shows multi‐excitonic luminescent centers verified by optical study and differential charge‐density from density functional theory calculations. Incorporation of Sb 3+ dopants and the increasing concentrations induce the efficient energy transfer therein, thus enhancing photoluminescence quantum yield from 5.1 % to 73.8 %. The multi‐excitonic emission inspires the creation of information encryption and decryption by leveraging the photoluminescence from ATPPCl to ATPP 2 SnCl 6 host and ATPP 2 SnCl 6 : Sb 3+ . This study facilitates the anti‐counterfeiting application by employing solution‐processable luminescent metal halides materials with excitation‐dependent PL properties.