Antibiotics mediated facile one-pot synthesis of gold nanoclusters as fluorescent sensor for ferric ions

Publication date: 15 May 2017
Source:Biosensors and Bioelectronics, Volume 91
Author(s): Mengqun Yu, Zheguo Zhu, Hong Wang, Linyao Li, Fei Fu, Yang Song, Erqun Song
In this paper, the cheap, easily obtained small antibiotic molecule of vancomycin was employed as reducer/stabilizer for facile one-pot synthesis of water exhibited a bluish fluorescence emission at 410nm within a short synthesis time about 50min. Based on the strong fluorescence quenching due to electron transfer mechanism by the introduction of ferric ions(Fe³⁺), the Van-AuNCs were interestingly designed for sensitive and selective detecting Fe³⁺ with a limit of 1.4μmol L⁻¹ in the linear range of 2–100μmol L⁻¹ within 20min. The Van-AuNCs based method was successfully applied to determine Fe³⁺ in tap water, lake water, river water and sea water samples with the quantitative spike recoveries from 97.50–111.14% with low relative standard deviations ranging from 0.49–1.87%, indicating the potential application of this Van-AuNCs based fluorescent sensor for environmental sample analysis.



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