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一种共价有机聚合物光探针,用于在水和食品样本中高度选择性和敏感的UO₂²⁺检测

Deshuai Zhen¹, Qiuhui Deng¹, Yao Yu²

¹Hunan Key Laboratory of Typical Environment Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.

Biosensors & bioelectronics

|September 6, 2025

概括

一个新的光探测器TT-COP提供了一种高度敏感和选择性的检测离子 (UO22+) 的方法. 这一进展对于环境安全和人类健康监测至关重要.

科学领域:

环境化学
材料科学
分析化学

背景情况:

精确检测离子 (UO22+) 对环境和人类健康安全至关重要.
现有的基于胺的探针对具有较高的亲和力,这限制了它们对UO22+检测的有用性.

研究的目的:

开发一种用于检测离子 (UO22+) 的新型,高度敏感和选择性的光探针.
通过提高UO22+对其他金属离子的选择性来克服现有探针的局限性.

主要方法:

通过3,3',5,5'-四甲 (TMB) 和2,4,6-三甲 (Tp) 的希夫基凝结合成共价有机聚合物光探针 (TT-COP).
TT-COP的特性包括稳定性,水友性和光性.
使用光光谱学研究TT-COP与UO22+的相互作用机制.
在环境,食品和生物样本中定量UO22+的TT-COP的验证.

主要成果:

TT-COP表现出优异的热力学稳定性,水友性和光稳定性.
达到了快速检测平衡 (5分钟) 和低检测极限 (35.75nM) 的UO22+.
该探测器通过与胺基和基组协调抑制分子内电荷转移 (ICT) 来表现出高选择性.
在复杂矩阵中成功量化UO22+,回收率高 (94.54% - 106.43%),与ICP-MS结果一致.

结论:

TT-COP是一个有前途的光探测器,用于敏感和选择性的UO22+检测.
探测器在复杂样本中的生物相容性和有效性突显了其在现实世界中的应用潜力.
TT-COP为食品安全,环境监测和人类健康评估提供了可靠的工具.

关键词:

化有机聚合物检测方式光灭分子内电荷转移离子

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