Hg2+-Selective Chemosensor Derived from 8-Hydroxyquinoline Having Benzothiazole Function in Aqueous Environment

Bulletin of the Korean chemical society

Young Hee Kim¹  Suk-Kyu Chang¹  Eun-Jin Kim¹  Na Jin Youn¹  Jin-Soo Youk¹ 

关键词: 8-Hydroxyquinoline;    Benzothiazole;    Hg2+-selectivity;    Fluoroionophore;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Newly synthesized 8-hydroxyquinoline based benzothiazole derivative 2 showed a distinctive Hg2+-selectivity over other transition metal ions in aqueous solution. The fluorescence emission at 455 nm of 2 was completely quenched upon interaction with Hg2+ ions in dioxane-H2O system (9 : 1, v/v). The selectivity was decreased in the order of Hg2+ >> Cu2+ > Cd2+ > Pb2+ ? Zn2+ ? Ni2+, and Hg2+ concentration dependent fluorescence quenching profile was observed in the presence of common interfering metal ions as background. The fluorescence behavior of 2 suggests that the prepared compound could be used as a fluorescent signaling subunit for the construction of new Hg2+-sensitive ON-OFF type supramolecular switching systems.

【 授权许可】

Unknown