基于香豆素内酯部分在 Cu2+ 作用下发生水解反应的比率型荧光“开-关”型荧光化学传感器用于水中 Cu2+ 的高灵敏和高选择性检测。
Highly sensitive and selective "turn-on" fluorescent chemodosimeter for Cu2+ in water via Cu2+-promoted hydrolysis of lactone moiety in coumarin.
机构信息
Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
出版信息
Chem Commun (Camb). 2010 May 21;46(19):3363-5. doi: 10.1039/c001408g. Epub 2010 Mar 24.
DOI:10.1039/c001408g
PMID:20442902
Abstract
A nonfluorescent coumarin derivative (1) was synthesized as an efficient "turn-on" fluorescent chemodosimeter for Cu(2+) in water. Mechanism studies suggested that 1 formed a complex with Cu(2+) in a 1:2 metal-to-ligand ratio, and a 50-fold fluorescence enhancement was observed when the complex simultaneously underwent Cu(2+)-promoted hydrolysis at ambient temperature.
摘要
一种非荧光香豆素衍生物（1）被合成出来，作为一种在水中对 Cu(2+)高效的“开启”型荧光化学传感器。机理研究表明，1 以 1:2 的金属-配体比例与 Cu(2+)形成配合物，并且当配合物在环境温度下同时发生 Cu(2+)-促进的水解时，观察到 50 倍的荧光增强。
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