A luminescent folded S-shaped high-nuclearity Eu_(19)-oxo-cluster embedded polyoxoniobate for information encryption  

作　　者：Wen-Jun Xia Yong-Jiang Wang Yun-Fei Cao Cai Sun Xin-Xiong Li Yan-Qiong Sun Shou-Tian Zheng 

机构地区：[1]College of Chemistry,Fuzhou University,Fuzhou 350108,China

出　　处：《Chinese Chemical Letters》2025年第2期498-502,共5页中国化学快报(英文版)

基　　金：the financial support from the National Natural Science Foundation of China(Nos.21971040,22171045,and 22371046)。

摘　　要：Ln-containing polyoxoniobates(PONbs)have appealing applications in luminescence,information encryption and magnetic fields,but the synthesis of PONbs containing high-nuclearity Ln-O clusters is challenging due to the easy hydrolysis of Ln^(3+)ions in alkaline environments.In this paper,we are able to integrate CO_(3)^(2-)and high-nuclearity Ln-O clusters into PONb to construct an inorganic giant Eu_(19)-embedded PONb H_(49)K_(16)Na_(13)(H_(2)O)_(63)[Eu_(21)O_(2)(OH)_(7)(H_(2)O)_(5)(Nb_(7)O_(22))_(10)(Nb_(2)O_(6))_(2)(CO_(3))_(18)]·91H_(2)O(1),which contains the highest nuclearity Eu-O clusters and the largest number of Eu^(3+)ions among PONbs.In addition,the film that was prepared by mixing 1 with gelatin and glycerol,exhibits reversible luminescence switching behavior under acid/alkali stimulation and has been used to create a fluorescence-encoded information approach.This work paves a feasible strategy for the construction of high-nuclearity Ln-O cluster-containing PONbs and the expansion of the application of Ln-containing PONbs in information encryption.

关 键 词：POLYOXONIOBATE LANTHANIDE Luminescence Information encryption Acid alkali stimulation 

分 类 号：O641.4[理学—物理化学] TP309.7[理学—化学]