Silver nanoclusters functionalized with Ce(III) ions are a viable “turn-on-off” fluorescent probe for sulfide

Jinshui Liu*, Huijuan Bao, Edmond Dik Lung MA, Chung Hang Leung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The authors show that silver nanoclusters functionalized with Ce(III) ions are a viable fluorescent probe for selective and sensitive detection of sulfide at pH 7.0. The blue fluorescence of silver nanoclusters (with excitation/emission peaks at 358/426 nm) is enhanced on the addition of Ce(III) ions but is quenched in the presence of a trace concentrations of sulfide. A fluorometric assay was worked out using the Ce(III)/AgNCs as the probe. Sulfide can be detected in concentrations up to 2.0 μM, and the detection limit is 15 nM. The method was successfully applied to the determination of sulfide in spiked real samples. [Figure not available: see fulltext.]

Original languageEnglish
Article number16
JournalMikrochimica Acta
Volume186
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

Scopus Subject Areas

  • Analytical Chemistry

User-Defined Keywords

  • Etching method
  • Fluorescence
  • Fluorescence quenching
  • Glutathione
  • Nanoclusters
  • Nanomaterial
  • Sulfide probe

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