A Dansyl-Rhodamine Based Fluorescent Probe for Detection of Hg2+ and Cu2+

Acta Chimica Slovenica

关键词: Rhodamine;    Fluorescent probe;    Copper ion;    Mercury ion;   

DOI  :  10.17344/acsi.2017.3442

来源: DOAJ

【 摘 要 】

A novel fluorescent probe based on dansyl-appended rhodamine B was developed. The probe can selectively recognize and sense Hg2+ and Cu2+ from other common metal ions by showing unique fluorescence and absorption characteristics. In MeCN/HEPES buffer solution, the probe gives a ratiometric fluorescent response to Hg2+, which was ascribed to the fluorescence resonance energy transfer from dansyl moiety to the ring-opened rhodamine B moiety, while the presence of Cu2+ causes fluorescence quenching. Beside the fluorescence change, the presence of Cu2+ and Hg2+ can induce intensive absorption at about 555 nm, which resulted in a color change from colorless to pink.

【 授权许可】

Unknown