A Turn‐On Fluorescent Rhodamine‐acyl Hydrazide for Selective Detection of Cu2+ Ions

Bulletin of the Korean Chemical Society

Hyuk Jeong¹  Jung Won Yoon²  Min Hee Lee² 

[1] 742 Korea;Department of Chemistry Sookmyung Women's University Seoul 140‐

关键词: Cu2+ detection;    Rhodamine;    Fluorescence off–;    on;    Color change;    Cu2+‐;    promoted hydrolysis;   

DOI  :  10.1002/bkcs.11087

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

We present a rhodamine‐based probe that can detect Cu2+ ions via Cu2+‐promoted hydrolysis in aqueous solutions. In solution, the probe is non‐fluorescent and colorless, but gives a strong fluorescence at 586 nm and shows a color change to pink on the addition of Cu2+ ions. We demonstrate that the rhodamine‐based probe undergoes Cu2+‐promoted hydrolysis with a moderate reaction time (within 3 min) and provides a fluorescence off–on change, even in the presence of other competitive metal ions. The rhodamine‐based probe shows a linear correlation between increasing fluorescence at 586 nm and the Cu2+ concentration, and can detect Cu2+ at nanomolar levels (10 nM) in CH3CNH2O (v/v, 9010).

【 授权许可】

Unknown