Lysozyme-stabilized gold fluorescent cluster: Synthesis and application as Hg2+ sensor

Hui Wei; Zidong Wang; Limin Yang; Shiliang Tian; Changjun Hou; Yi Lu

doi:10.1039/C0AN00046A

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Lysozyme-stabilized gold fluorescent cluster: Synthesis and application as Hg²⁺ sensor†

Hui Wei,^a Zidong Wang,^b Limin Yang,^ac Shiliang Tian,^a Changjun Hou^c and Yi Lu*^ab

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Illinois, Urbana-Champaign, Urbana, Illinois, USA
E-mail: yi-lu@illinois.edu
Fax: (+1) 217-244-3186
Tel: (+1) 217-333-2619

^b Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA

^c College of Bioengineering, Chongqing University, Sha Ping Ba Street 174, Chongqing, China

Abstract

Highly fluorescent gold clusters have been synthesized in basic aqueous solution by using lysozyme as reducing and stabilizing agents. The lysozyme-stabilized gold fluorescent clusters (LsGFC) have an average size of 1 nm and emission ∼ 657 nm. The fluorescence could be specifically quenched by Hg²⁺, so the LsGFC can be used as a sensor for sensitive and selective Hg²⁺ detection with a detection limit of 10 nM.

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Supplementary files

Optimization of the reaction conditions for preparing the LsGFC PDF (490K)

Article information

DOI: https://doi.org/10.1039/C0AN00046A
Article type: Paper
Submitted: 29 Jan 2010
Accepted: 22 Mar 2010
First published: 22 Apr 2010

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Analyst, 2010,135, 1406-1410

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Lysozyme-stabilized gold fluorescent cluster: Synthesis and application as Hg²⁺ sensor

H. Wei, Z. Wang, L. Yang, S. Tian, C. Hou and Y. Lu, Analyst, 2010, 135, 1406 DOI: 10.1039/C0AN00046A

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