Water-soluble polymer dots formed from polyethylenimine and glutathione as a fluorescent probe for mercury(II).

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2018
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Abstract
Water-soluble fluorescent polymer dots (PDs) were prepared from polyethylenimine and glutathione and are shown to be viable fluorescent probes for selective and sensitive determination of Hg(II). The PDs possess bright blue fluorescence (with excitation/emission peaks at 340/462 nm) which is quenched on addition of Hg(II). Based on these findings, a fluorometric assay was worked out. Fluorescence linearly drops in the 0.1 to 100 μM Hg(II) concentration range, and the limit of detection is 32 nM. Graphical abstract The fluorescence of polymer dots prepared from glutathione and polyethyleimine (G-PEI PDs) is selectively quenched by Hg, and this finding was applied to the determination of Hg in environmental water samples.
Reference Key
luo2018watersolublemikrochimica Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Luo, Dan;Liu, Shi Gang;Li, Nian Bing;Luo, Hong Qun;
Journal Mikrochimica acta
Year 2018
DOI
10.1007/s00604-018-2817-3
URL
Keywords
electron transfer dynamic quenching environmental samples heavy metal ions hg2+ analysis industrial waste water non-conjugated polymers stern-volmer plot

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