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电子替换对ESIPT驱动的pH和氨基酸检测的影响:探索机制

Bharat Kaushik¹, Annu Agarwal¹, Ajeet Singh¹

¹Department of Chemistry, BITS Pilani, Pilani Campus, Rajasthan, 333031, Pilani, India.

Chemistry, an Asian journal

|January 9, 2025

概括

新的发光探测器通过检测氨和生物胺来检测肉类腐烂. 这些探针为食品质量评估提供了一种简单的方法,通过敏感检测分解产品来提高公共卫生安全.

科学领域:

分析化学分析化学
材料科学材料科学材料科学
食品科学食品科学食品科学

背景情况:

肉类腐烂涉及蛋白质分解,释放氨和生物氨基胺 (BA).
对BA的敏感检测对于在储存,运输和消费期间评估肉类安全和质量至关重要.
现有的BA检测方法可能缺乏广泛食品质量评估所需的简单性和灵敏性.

研究的目的:

设计和合成基于发光的新型探针分子,用于检测氨和生物胺.
调查分子结构,激发状态诱导的质子转移 (ESIPT) 特性和传感能力之间的关系.
开发一种使用这些探针评估肉类腐烂的实用方法.

主要方法:

三种2-(2-基) 西醇 (HBT) 衍生物的合成,在位上有不同的替代剂 (OMe,NO2).
使用哈梅特置换常数评估电子属性,以了解质子转移动态.
描述ESIPT现象和依赖pH的光谱变化.
使用合成的探针量化氨和水,确定检测极限 (LOD).
探针的应用用于基于条纹的检测肉腐烂在接触和非接触模式.

主要成果:

设计的HBT衍生品表现出ESIPT现象,可调节的质子转移速率受到替代物的影响.
证明了pH感应能力,OMe替代化合物显示出突出的多色变化.
对氨 (28.6 μM) 和素 (61.34 nM) 达到了低检测极限.
成功地应用了探针用于现实世界检测肉腐烂,使用基于条纹的测试.

结论:

合成的发光探针为检测氨和生物胺提供了一种敏感而简单的方法.
可调节的ESIPT特性允许在pH感应和食品腐烂检测方面实现多功能应用.
基于条纹的检测为评估肉类质量和确保食品安全提供了一个实用的工具.

关键词:

氨基氨基感应氨基氨基感应在ESIPT的基础上,ESIPT是.索尔瓦托克罗米斯主义是一个问题.替代效应是一种替代效应.检测pH值的感应器

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