用于防伪和加密应用的 0D 氯化锑中的客人依赖性刺激响应光致发光

IF 5.1 Q1 POLYMER SCIENCE

ACS Macro Letters Pub Date : 2024-09-28 DOI:10.1002/adfm.202413049

Wenzhi Li, Xin Mao, Hong Yin, Yuxi Wang, Yifan Wang, Junsheng Chen, Keli Han, Ruiling Zhang

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引用次数: 0

摘要

具有刺激响应型光致发光（PL）的 0D 无铅金属卤化物作为用于先进防伪和信息加密的前景广阔的智能材料，已经引起了人们的极大关注。然而，设计高性能的刺激响应型金属卤化物仍然是一项挑战。本文提出了一种溶剂客体调谐策略来开发刺激响应型 0D 金属卤化物。我们合成了三种新型高黄发射性主宾体系 TMA2SbCl5-X（TMA：(CH3)4N+，X = DMSO、DMF 和 MeCN）。在热刺激条件下，TMA2SbCl5-X（X = DMSO 和 DMF）表现出聚光效应的通断切换，而 TMA2SbCl5-MeCN 则由于结构相变而表现出聚光效应颜色从黄色变为橙色。详细的原位 XRD 衍射研究揭示了客体溶剂分子在调节结构相变中的作用。研究首次发现，主-客体体系具有依赖于客体的结构演化，从而对热刺激产生不同的聚光响应。此外，湿气也能触发结构相变，诱导聚合酶的开关。出色的刺激响应性能使这些混合物在防伪和加密应用中大有可为。这些发现为开发刺激响应型无铅金属卤化物材料提供了新的思路。

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Guest-Dependent Stimuli-Responsive Photoluminescence in 0D Antimony Chlorides for Anticounterfeiting and Encryption Applications

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Guest-Dependent Stimuli-Responsive Photoluminescence in 0D Antimony Chlorides for Anticounterfeiting and Encryption Applications

0D lead-free metal halides with stimuli-responsive photoluminescence (PL) have attracted great attention as promising smart materials for advanced anticounterfeiting and information encryption. However, designing high-performance stimuli-responsive metal halides remains a challenge. Herein, a solvent guest tuning strategy to develop stimuli-responsive 0D metal halides is proposed. Three novel highly yellow-emissive host-guest systems, TMA₂SbCl₅·X (TMA: (CH₃)₄N⁺, X = DMSO, DMF, and MeCN) are synthesized. Under heat stimuli, TMA₂SbCl₅·X (X = DMSO and DMF) exhibits PL on-off switching, while TMA₂SbCl₅·MeCN shows PL color change from yellow to orange, due to structural phase transitions. Particularly, TMA₂SbCl₅·DMSO and TMA₂SbCl₅·MeCN demonstrate a fast response within 50 s at temperatures above 353 K. Detailed in situ XRD diffraction study unveils the role of guest solvent molecules in the regulation of structural phase transitions. For the first time, it is found that the host-guest systems possess a guest-dependent structural evolution that results in a different PL response to heat stimuli. In addition, moister can also trigger structural phase transition and induce PL on-off switching. The remarkable stimuli response performance makes these hybrids promising for anticounterfeiting and encryption applications. These findings provide new insights for the development of stimuli-responsive lead-free metal halide materials.

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来源期刊

ACS Macro Letters 化学-

CiteScore

10.40

自引率

3.40%

发文量

209

审稿时长

1 months

期刊介绍： ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science. With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.