A FRET ratiometric fluorescent probe for detection of Hg2+ based on an imidazo[1,2-a]pyridine-rhodamine system

A novel imidazo[1,2-a]pyridine-rhodamine ratiometric fluorescent probe IP-Hg for Hg2+ based on a fluorescence resonance energy transfer mechanism has been developed. The probe has been proved to show high sensitivity and high selectivity toward Hg2+. Furthermore, it could be used for imaging Hg2+ in...

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Bibliographic Details
Published in:Analytica chimica acta 2019-10, Vol.1077, p.243-248
Main Authors: Li, Yanzhong, Qi, Sijia, Xia, Chengcai, Xu, Yanhao, Duan, Guiyun, Ge, Yanqing
Format: Article
Language:English
Subjects:
Bioimaging
Energy transfer
Fluorescence
Fluorescence resonance energy transfer
Fluorescent indicators
Fluorescent probe
FRET
Hg2
imidazo[1,2-a]pyridine
Mercury
Mercury (metal)
Pyridines
Rhodamine
Selectivity
Water pollution
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Summary:A novel imidazo[1,2-a]pyridine-rhodamine ratiometric fluorescent probe IP-Hg for Hg2+ based on a fluorescence resonance energy transfer mechanism has been developed. The probe has been proved to show high sensitivity and high selectivity toward Hg2+. Furthermore, it could be used for imaging Hg2+ in cells and in polluted water. [Display omitted] •A ratiometric fluorescent probe for sensing Hg2+ based on new imidazo[1,2-a]pyridine fluorophore has been synthesized.•The probe exhibits highly sensitivity and selectivity toward Hg2+ (LOD: 9.1 nM).•The ratiometric fluorescent probe displays a remarkable emission shift (220 nm).•The probe show low cytotoxicity and can image in cells.
ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2019.05.043