Pyrene Appended Hg2+-selective Fluoroionophore Based upon Diaza-Crown Ether

Bulletin of the Korean chemical society

Myung Gil Choi¹  Hee Jung Kim¹  Suk-Kyu Chang¹ 

关键词: Diaza-crown ether;    Hg2+-selectivity;    Pyrene;    Fluoroionophore;    Ratiometry;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A new pyrene appended diaza-18-crown-6 ether derivative 1 has been prepared and its fluoroionophoric properties toward transition metal ions were investigated. Compound 1 exhibited a high Hg²⁺-selectivity over other transition metal ions as well as alkali and alkaline earth metal ions in aqueous acetonitrile solution. The ratiometric analysis of the monomer and excimer emissions of pyrene successfully signals the presence of Hg²⁺ ions. The detection limit for Hg²⁺ ions was found to be 3.1 �? 10^-6 M in 50% aqueous acetonitrile solution at pH 8.1. Competition experiments also suggest that the compound could be utilized as a selective and sensitive fluorescent chemosensor for the analysis of micromolar Hg2+ ions in physiological and environmental samples.

【 授权许可】

Unknown