Crystalline-Phase-Recognition-Induced Domino Phase Transition and Luminescence Switching for Advanced Information Encryption,Angewandte Chemie International Edition

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Crystalline-Phase-Recognition-Induced Domino Phase Transition and Luminescence Switching for Advanced Information Encryption
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-08-16 , DOI: 10.1002/anie.202110088
Zhizhuan Zhang _{1,

2} , Yangpeng Lin ₂ , Jiance Jin _{1,

3} , Liaokuo Gong ₁ , Yingchen Peng _{1,

3} , Ying Song ₄ , Nannan Shen ₁ , Zeping Wang ₁ , Kezhao Du ₂ , Xiaoying Huang _{1,

3}

Affiliation

Herein, a new mechanism, namely, crystalline phase recognition (CPR), is proposed for the single-crystal-to-single-crystal (SCSC) transition of metal halides. Chiral β-[Bmmim]₂SbCl₅ (Bmmim=1-butyl-2,3-methylimidazolium) can recognize achiral α-[Bmmim]₂SbCl₅ on the basis of a key–lock feature through intercontact of their single crystals, resulting in a domino phase transition (DPT). The concomitant photoluminescence (PL) switching enables observation of the DPT in situ. The liquid eutectic interface, stress–strain transfer, and feasible thermodynamics are key issues for the CPR. DFT calculations and PL measurements revealed that the optical absorption and emission of the isomers mainly originate from [SbCl₅]²⁻ anions. The structural effects (e.g., supramolecular interactions and [SbCl₅]²⁻ distortion) on the optical emission are clarified. As a novel type of stimuli response, the CPR-induced DPT and luminescence switching exhibit potential for application in advanced time-resolved information encryption.

中文翻译：

用于高级信息加密的结晶相识别诱导多米诺相变和发光切换

在此，提出了一种新的机制，即结晶相识别（CPR），用于金属卤化物的单晶到单晶（SCSC）转变。手性 β-[Bmmim] ₂ SbCl ₅ (Bmmim=1-丁基-2,3-甲基咪唑鎓) 可以识别非手性 α-[Bmmim] ₂ SbCl ₅通过它们的单晶相互接触，基于钥匙锁特征，得到在多米诺相变 (DPT) 中。伴随的光致发光 (PL) 切换可以原位观察 DPT。液体共晶界面、应力应变传递和可行的热力学是 CPR 的关键问题。DFT 计算和 PL 测量表明异构体的光吸收和发射主要来自 [SbCl ₅ ]²⁻阴离子。阐明了对光发射的结构效应（例如，超分子相互作用和 [SbCl ₅ ] ^2-畸变）。作为一种新型的刺激响应，CPR 诱导的 DPT 和发光切换在先进的时间分辨信息加密中具有应用潜力。

更新日期：2021-10-12

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