Nucleophilic Addition-Triggered Lanthanide Luminescence Allows Detection of Amines by Eu(thenoyltrifluoroacetone)3

作者：Zhou Zhan; Wang Qianming^*; Lin Jintai; Chen Yanna; Yang Chuqin

来源：Photochemistry and Photobiology, 2012, 88(4): 840-843.

DOI：10.1111/j.1751-1097.2012.01150.x

Herein, a novel fluorescent indicator for the real-time monitoring of amines is described. This probe contains a complex of europium-(thenoyltrifluoroacetone)3 (Eu(TTA)3) that efficiently reacts with primary and secondary amines. The electron-withdrawing trifluoroacetyl undergoes a nucleophilic addition with amines, and the complex was used to selectively detect BuNH2 and Et2NH (quenching concentration for BuNH2: 10-4 m, for Et2NH: 1.2 x 10-3 m) by monitoring emission; no changes were observed in the emission spectrum of Eu(TTA)3 in the presence of Et3N, [Bu4N]Cl, or PhNH2 in aqueous solution (THF/H2O = 1:1). The ratio of emission intensity to amine concentration was linear by the least-squares fitting method.

• 出版日期2012-8
• 单位华南师范大学