发光
光致发光
加密
材料科学
量子产额
钙钛矿(结构)
光化学
化学
化学工程
计算机科学
光电子学
荧光
光学
物理
结晶学
计算机安全
工程类
作者
Liang Shi,Ji Wang,Lin Zhou,Yunlin Chen,Jun Yan,Congqi Dai
标识
DOI:10.1016/j.jssc.2019.121062
摘要
MAPbBr3 perovskite have attracted considerable attention due to their merits of high photoluminescence quantum yield and tunable photoluminescence. However, MAPbBr3 is difficult to be applied in optical information protection due to its poor stability and visibility under either ambient or UV light. Herein, the combination of PbBr2, MAPbBr3 and a Zr-based metal−organic framework (MOF) UiO-66 has been developed to prepare stable PbBr2@UiO-66 and luminescent MAPbBr3@UiO-66 composite for realizing information encryption and decryption based on the conversion of PbBr2@UiO-66 to luminescent MAPbBr3@UiO-66. Owing to the PbBr2@UiO-66 exhibits “invisible” characteristic under either ambient or UV light, information can be recorded and encrypted, which can not be read through common decryption methods. Highly luminescent MAPbBr3@UiO-66 can be quickly formed in situ by using a MABr solution that reacted with PbBr2@UiO-66, thus promoting information decryption. In addition, through water and MABr solution treatments, the luminescence of MAPbBr3@UiO-66 could be quenched and recovered for multiple information encryption and decryption.
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