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Ethanol-Induced Reversible Phase Transition in Antimony Halides for Morse Code Anti-Counterfeiting and Optical Logic Gates
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2024-11-07 , DOI: 10.1002/lpor.202401304
Zhigang Zang 1, 2 , Dehai Liang 2 , Yingrui Shi 2 , Zhenyu Liu 3 , Ru Li 2 , Saif M. H. Qaid 4 , Wensi Cai 2
Affiliation  

Low-dimensional hybrid organic-inorganic metal halides (OIMHs) have attracted considerable attention in anti-counterfeiting due to their non-toxicity and high photoluminescence quantum yield (PLQY). However, many reported OIMHs are either not reversible or have a poor PLQY. In this study, two antimony-based halides, (C21H21P)2SbCl5 and (C22H24P)2SbCl5, are synthesized using different organic cations. Both compounds exhibit bright orange–yellow emissions with a PLQY of 82.6% and 83.5%, respectively. The orange–yellow emission of (C21H21P)2SbCl5 and (C22H24P)2SbCl5 are attributed to the radiative recombination of self-trapping excitons. While (C21H21P)2SbCl5 maintains stable orange–yellow luminescence when exposed to ethanol, (C22H24P)2SbCl5 undergoes a structural transformation to non-luminescent (C22H24P)2Sb2Cl8 upon ethanol treatment, which can be reverted to its luminescent state by heating. Even after multiple cycles, the PLQY of (C22H24P)2SbCl5 is still over 80%, demonstrating excellent cycling stability. (C21H21P)2SbCl5 and (C22H24P)2SbCl5 are also explored as fluorescent materials for Morse code anti-counterfeiting and optical logic gate applications. This work offers a completely new option for fluorescent material used for security information.

中文翻译:


乙醇诱导的锑卤化物中的可逆相变,用于摩尔斯电码防伪和光学逻辑门



低维杂化有机-无机金属卤化物 (OIMHs) 因其无毒和高光致发光量子产率 (PLQY) 而在防伪领域引起了相当大的关注。然而,许多报道的 OIMH 要么是不可逆的,要么 PLQY 较差。在本研究中,使用不同的有机阳离子合成了两种锑基卤化物 (C 21 H 21 P) 2 SbCl 5 和 (C 22 H 24 P) 2 SbCl 5 。两种化合物都表现出明亮的橙黄色发射,PLQY 分别为 82.6% 和 83.5%。(C 21 H 21 P) 2 SbCl 5 和 (C 22 H 24 P) 2 SbCl 5 的橙黄色发射归因于自捕获激子的辐射复合。(C 21 H 21 P) 2 SbCl 在暴露于乙醇时 5 保持稳定的橙黄色发光,而 (C 22 H 24 P) 2 SbCl 8 在乙醇处理后 5 发生结构转变为非发光 (C 22 H 24 P) 2 Sb 2 Cl,可通过加热恢复到其发光状态。即使经过多次循环,(C 22 H 24 P) 2 SbCl 5 的 PLQY 仍然超过 80%,表现出优异的循环稳定性。(C 21 H 21 P) 2 SbCl 5 和 (C 22 H 24 P) 2 SbCl 5 也被探索用作莫尔斯电码防伪和光学逻辑门应用的荧光材料。这项工作为用于安全信息的荧光材料提供了一个全新的选择。
更新日期:2024-11-07
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