CsCuI与CsCuI钙钛矿衍生物之间的可逆转变及其防伪应用
Reversible Transformation between CsCuI and CsCuI Perovskite Derivatives and Its Anticounterfeiting Application.
作者信息
Zhang Xiangtong, Zhou Biao, Chen Xueping, Yu William W
机构信息
Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Centre for High-Efficiency Display and Lighting Technology, School of Materials and Engineering, Collaborative Innovation Centre of Nano Functional Materials and Applications, Henan University, Kaifeng 475000, China.
Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States.
出版信息
Inorg Chem. 2022 Jan 10;61(1):399-405. doi: 10.1021/acs.inorgchem.1c03021. Epub 2021 Dec 20.
Lead halide perovskites have promising values in photoelectronic and photovoltaic applications, but the toxicity of lead is a hard barrier. Copper halide perovskite derivatives (CHPDs), as a lead-free substitution of lead halide perovskites, also exhibit excellent photoelectric properties. Here, we present a facile one-step route for the synthesis of blue-emissive CsCuI (emission at 440 nm) and yellow-emissive CsCuI (emission at 552 nm) CHPDs in ethanol at room temperature. Triggered by ethanol or CsI, a reversible chemical transformation accompanied by emissive color change between CsCuI and CsCuI CHPDs was achieved. The reversible transformation mechanism was discussed, and this transformation was employed for effective anticounterfeiting.
卤化铅钙钛矿在光电和光伏应用中具有广阔的应用价值，但铅的毒性是一个难以逾越的障碍。卤化铜钙钛矿衍生物（CHPDs）作为卤化铅钙钛矿的无铅替代品，也表现出优异的光电性能。在此，我们展示了一种简便的一步法，可在室温下于乙醇中合成发射蓝光的CsCuI（发射波长为440 nm）和发射黄光的CsCuI（发射波长为552 nm）CHPDs。在乙醇或CsI的触发下，实现了CsCuI和CsCuI CHPDs之间伴随发射颜色变化的可逆化学转变。讨论了可逆转变机制，并将这种转变用于有效的防伪。
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