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Intelligent Colorimetric Indicators for Quality Monitoring and Multilevel Anticounterfeiting with Kinetics-Tunable Fluorescence
ACS Nano ( IF 15.8 ) Pub Date : 2023-04-13 , DOI: 10.1021/acsnano.3c00074 Guodong Zhao 1 , Yao Kou 1 , Nan Song 1 , Xiaohe Wei 1 , Xiaoyong Zhai 1 , Pengfei Feng 1 , Feng Wang 2 , Chun-Hua Yan 1 , Yu Tang 1, 3
ACS Nano ( IF 15.8 ) Pub Date : 2023-04-13 , DOI: 10.1021/acsnano.3c00074 Guodong Zhao 1 , Yao Kou 1 , Nan Song 1 , Xiaohe Wei 1 , Xiaoyong Zhai 1 , Pengfei Feng 1 , Feng Wang 2 , Chun-Hua Yan 1 , Yu Tang 1, 3
Affiliation
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The spoilage and forgery of perishable products such as food, drugs, and vaccines cause serious health hazards and economic loss every year. Developing highly efficient and convenient time–temperature indicators (TTIs) to realize quality monitoring and anticounterfeiting simultaneously is urgent but remains a challenge. To this end, a kind of colorimetric fluorescent TTI, based on CsPbBr3@SiO2 nanoparticles with tunable quenching kinetics, is developed. The kinetics rate of the CsPbBr3-based TTIs is easily regulated by adjusting temperature, concentration of the nanoparticles, and addition of salts, stemming from the cation exchange effect, common-ion effect, and structural damage by water. Typically, when combined with europium complexes, the developed TTIs show an irreversible dynamic change in fluorescent colors from green to red upon increasing temperature and time. Furthermore, a locking encryption system with multiple logics is also realized by combining TTIs with different kinetics. The correct information only appears at specific ranges of time and temperature under UV light and is irreversibly self-erased afterward. The simple and low-cost composition and the ingenious design of kinetics-tunable fluorescence in this work stimulate more insights and inspiration toward intelligent TTIs, especially for high-security anticounterfeiting and quality monitoring, which is really conducive to ensuring food and medicine safety.
中文翻译：
用于质量监测和多级防伪的智能比色指示剂与动力学可调荧光
食品、药品、疫苗等易腐产品的腐败变质和伪造每年都会造成严重的健康危害和经济损失。开发高效便捷的时间-温度指示器（TTI）以同时实现质量监控和防伪是当务之急，但仍然是一个挑战。为此，开发了一种基于CsPbBr 3 @SiO 2纳米粒子的比色荧光TTI，具有可调谐猝灭动力学。CsPbBr 3的动力学速率基于阳离子交换效应、共离子效应和水造成的结构破坏，通过调节温度、纳米粒子浓度和盐的添加很容易调节基于-的 TTI。通常，当与铕配合物结合使用时，开发的 TTI 会随着温度和时间的增加而显示荧光颜色从绿色变为红色的不可逆动态变化。此外，通过组合具有不同动力学的TTI，还实现了具有多种逻辑的锁定加密系统。正确的信息只在特定的时间和温度范围内在紫外线照射下出现，然后不可逆转地自我擦除。这项工作中简单且低成本的成分和动力学可调荧光的巧妙设计激发了对智能 TTIs 的更多见解和灵感，
更新日期：2023-04-13
中文翻译：
用于质量监测和多级防伪的智能比色指示剂与动力学可调荧光
食品、药品、疫苗等易腐产品的腐败变质和伪造每年都会造成严重的健康危害和经济损失。开发高效便捷的时间-温度指示器（TTI）以同时实现质量监控和防伪是当务之急，但仍然是一个挑战。为此，开发了一种基于CsPbBr 3 @SiO 2纳米粒子的比色荧光TTI，具有可调谐猝灭动力学。CsPbBr 3的动力学速率基于阳离子交换效应、共离子效应和水造成的结构破坏，通过调节温度、纳米粒子浓度和盐的添加很容易调节基于-的 TTI。通常，当与铕配合物结合使用时，开发的 TTI 会随着温度和时间的增加而显示荧光颜色从绿色变为红色的不可逆动态变化。此外，通过组合具有不同动力学的TTI，还实现了具有多种逻辑的锁定加密系统。正确的信息只在特定的时间和温度范围内在紫外线照射下出现，然后不可逆转地自我擦除。这项工作中简单且低成本的成分和动力学可调荧光的巧妙设计激发了对智能 TTIs 的更多见解和灵感，
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