Synthesis of Dual Red-Emitting Fluorescent Silver Nanoclusters in Aqueous Lipoic Acid-Based Polymer Solutions and Application for Cu2+ Detection and Cell Imaging

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Abstract

Dual red-emitting fluorescent and water-soluble silver nanoclusters (AgNCs) were synthesized in aqueous solutions through the reduce reaction method using lipoic acid-modified-poly(vinyl alcohol) as a novel protective ligand and sodium borohydride as a reducing agent. The obtained AgNCs exhibited a large Stokes shift and high stability. The fluorescence lifetime of the obtained AgNCs was 1.4×104 ns and the corresponding quantum yield reached 7.1 %. The obtained AgNCs showed highly sensitive and selective detection of Cu2+, in which the evaluation of Cu2+ was allowed in the range of 0–28 μM with a limit of detection (LOD) as low as 0.71 μM. Moreover, the obtained AgNCs are explored to application for bioimaging through incubation with ID8 cells.

Original languageEnglish
Article numbere202200185
JournalChemistrySelect
Volume7
Issue number12
DOIs
StatePublished - 29 Mar 2022

Keywords

  • Analytical methods
  • Cell imaging
  • Fluorescence
  • Poly(vinyl alcohol)
  • Silver nanoclusters

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