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Updated: Jul 2, 2026
A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions
Published on: February 5, 2016
Quenching effect of nickel ions on fluorescent gold nanoparticles
Hu-Zhi Zheng1, Li Liu, Zhu-Jun Zhang
1Chongqing Municipal Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Beibei, Chongqing, PR China. zhenghz@swu.edu.cn
Abstract:
Herein, we reported the quenching effect of Ni(2+) on bovine serum albumin protected fluorescent gold nanoparticles (BSA-GNPs). The quenching mechanism was discussed and a static quenching mechanism was proposed. The number of binding sites (n), apparent stability constants (K) and corresponding thermodynamic parameters of BSA-GNPs-Ni(2+) complex were measured at different temperatures. Under optimum conditions, the fluorescence intensity of BSA-GNPs is linearly proportional to nickel concentration from 6.0x10(-8)mol/L to 8.0x10(-6)mol/L with a detection limit of 1.0x10(-8)mol/L. The result indicated that BSA-GNP was a potential Ni(2+) probe.
