无机材料学报2022，Vol.37Issue(4)：445-451,中插2-中插3,9.DOI:10.15541/jim20210270
空间限域铅离子与钙钛矿纳米晶间的可逆转换与信息存储应用
Reversible Conversion between Space-confined Lead Ions and Perovskite Nanocrystals for Confidential Information Storage
摘要
Abstract
Luminescent materials have been widely used in confidential information protection and anticounterfeiting. Luminescent lead halide perovskite nanocrystals, which can be converted from the lead source through a two-step method, are attractive candidates for information encryption and decryption. Herein, the reversible conversion between the invisible lead-organic framework and the luminescent MAPbBr3 nanocrystals is achieved, together with their further application on information storage by inkjet printing technology. The lead ions are embedded into the metal-organic frameworks through coordination with the 2-methylimidazole linkers. The inherent confined distribution of lead ions facilitates the in-situ growth of perovskite nanocrystals in the second step without the assistance of external bulky ligands. The recorded information was firstly encrypted by the lead organic frameworks, which is invisible under ambient and UV light. After reacting with methylammonium bromide, the perovskite nanocrystals are in-situ formed, and the information becomes readable under UV light. Using methylammonium bromide and water as the decryption and encryption reagents could also switch on/off the luminescence, therefore, realizing the confidential information storage.关键词
钙钛矿纳米晶/光致发光/墨水打印/信息存储Key words
perovskite nanocrystal/photoluminescence/inkjet printing/information storage分类
化学化工引用本文复制引用
张国庆,秦鹏,黄富强..空间限域铅离子与钙钛矿纳米晶间的可逆转换与信息存储应用[J].无机材料学报,2022,37(4):445-451,中插2-中插3,9.基金项目
National Natural Science Foundation of China(21871008,51872315) （21871008,51872315）
Key Research Program of Frontier Science,Chinese Academy of Sciences(QYZDJ-SSW-JSC013) （QYZDJ-SSW-JSC013）
