Loading Photochromic Molecules into a Luminescent Metal-Organic Framework for Information Anticounterfeiting.,Angewandte Chemie International Edition

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Loading Photochromic Molecules into a Luminescent Metal-Organic Framework for Information Anticounterfeiting.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2019-10-25 , DOI: 10.1002/anie.201910467
Zhiqiang Li _{1,

2} , Guannan Wang ₁ , Yingxiang Ye ₂ , Bin Li ₁ , Huanrong Li ₁ , Banglin Chen ₂

Affiliation

Stimuli-responsive photoluminescent materials have attracted considerable attention owing to their potential applications in security protection because the information recorded directly in materials with static luminescent outputs are usually visible under either ambient or UV light. Herein, we realize reversible information anticounterfeiting by loading a photoswitchable diarylethene derivative into a lanthanide metal-organic framework (MOF). Light triggers the open- and closed-form isomerization of the diarylethene unit, which respectively regulates the inactivation and activation of the photochromic FRET process between the diarylethene acceptor and lanthanide donor, resulting in reversible luminescence on-off switching of the lanthanide emitting center in the MOF host. This photoresponsive host-guest system allows for reversible multiple information pattern visible/invisible transformation by simply alternating the exposure to UV and visible light.

中文翻译：

将光致变色分子加载到发光金属有机框架中以进行信息防伪。

刺激响应型光致发光材料由于其在安全保护中的潜在应用而引起了极大的关注，因为直接记录在具有静态发光输出的材料中的信息通常在环境或紫外光下可见。在本文中，我们通过将可光开关的二芳基乙烯衍生物加载到镧系金属有机骨架（MOF）中来实现可逆信息防伪。光触发二芳基乙烯单元的开环和闭环异构化，分别调节二芳基乙烯受体和镧系元素供体之间的光致变色FRET过程的失活和活化，导致镧系元素发射中心的可逆发光开-关转换。 MOF主机。

更新日期：2019-10-25

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