Smart Photoresponsive Label with Red Fluorescence and Blue Phosphorescence Promoted by Hydrogen-Bonded Organic Frameworks for Food Additives Detection

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-05-07 DOI:10.1021/acsami.5c06337

Zishuo Zhang, Bing Yan

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Abstract

The photoresponsive materials with excellent sensing performance have garnered increased attention in the field of smart food labels. Owing to exceptional optical properties, room-temperature phosphorescent (RTP) materials gradually grow as promising candidates. While the unstable and sensitive triplet excitons impede the development of purely organic RTP materials. Herein, a host–guest doping strategy is proposed to promote RTP through the encapsulation of organic phosphors with different carboxyl positions into hydrogen-bonded organic frameworks (HOFs) via in situ assembly. The rigid environment provided by HOFs effectively stabilizes triplet excitons of the guest to achieve blue RTP with a long lifetime of 235.6 ms. Furthermore, a dual-emission material (Eu-TMLA@HOF) combining red fluorescence and blue phosphorescence demonstrates high sensitivity, excellent selectivity, and a rapid response in detecting food additives. Furthermore, the Eu-TMLA@HOF hydrogel was designed to underscore its potential as a robust and efficient photoresponsive label for monitoring food additives.

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基于氢键有机框架的红色荧光和蓝色磷光智能光响应标签用于食品添加剂检测

具有优异传感性能的光响应材料在智能食品标签领域受到越来越多的关注。由于其优异的光学性能，室温磷光（RTP）材料逐渐成为有前途的候选材料。而不稳定和敏感的三重态激子阻碍了纯有机RTP材料的发展。本文提出了一种主客体掺杂策略，通过原位组装将不同羧基位置的有机荧光粉包封成氢键有机框架（HOFs）来促进RTP。hof提供的刚性环境有效地稳定了客体的三重态激子，实现了长寿命235.6 ms的蓝色RTP。此外，一种结合红色荧光和蓝色磷光的双发射材料（Eu-TMLA@HOF）在检测食品添加剂方面表现出高灵敏度、优异的选择性和快速的响应。此外，Eu-TMLA@HOF水凝胶的设计强调了其作为监测食品添加剂的强大和有效的光反应标签的潜力。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.