Turn-On Fluorescent Chemosensor for Hg2+ Based on Multivalent Rhodamine Ligands

International Journal of Molecular Sciences

关键词: rhodamine;    mercury;    chemosensor;    fluorescence;   

DOI  :  10.3390/ijms131216822

来源: DOAJ

【 摘 要 】

Rhodamine-based fluorescent chemosensors 1 and 2 exhibit selective fluorescence enhancement to Fe3+ and Hg2+ over other metal ions at 580 nm in CH3CN/H2O (3/1, v/v) solution. Bis(rhodamine) chemosensor 1, under optimized conditions (CH3CN/HEPES buffer (0.02 M, pH = 7.0) (95/5, v/v)), shows a high selectivity and sensitivity to Hg2+, with a linear working range of 0–50 μM, a wide pH span of 4–10, and a detection limit of 0.4 μM Hg2+.

【 授权许可】

Unknown