化学
香豆素
荧光
二甲胺
水溶液中的金属离子
Mercury(编程语言)
离子
光化学
水解
组合化学
有机化学
计算机科学
量子力学
物理
程序设计语言
作者
Inae Kim,Dokyoung Kim,Sunderraman Sambasivan,Kyo Han Ahn
标识
DOI:10.1002/ajoc.201200034
摘要
Abstract An efficient synthetic route to π‐extended coumarin derivatives and their precursors that contain amino substituents has been developed. The synthesis involves monosubstitution of 2,7‐dihydroxynaphthalene with dimethylamine through the Bucherer reaction. The extended coumarins emit at much longer wavelengths and with higher quantum yields relative to a related coumarin. Two vinyl ethers, precursors of the extended coumarins, were prepared and evaluated as reactive probes for Hg 2+ ions. The vinyl ethers undergo hydrolysis promoted by Hg 2+ ions to produce the extended coumarins at physiological pH (pH 7.4) and room temperature, which is accompanied by fluorescence in the “turn‐on” mode. The vinyl ethers do not respond to various other metal species. The extended coumarins and their precursors are versatile sensing platforms for Hg 2+ ions, as well as for the development of related reaction‐based sensing systems.
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