Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 3, Pages 1000-1005Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm13457d
Keywords
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Funding
- National Natural Science Foundation of China [20927007, 21075083]
- state key laboratory program [KFJJ200918]
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A microwave (MW)-assisted synthesis method for preparation of fluorescent BSA-stabilized and HSA-protected gold nanoclusters (BSA-AuNCs and HSA-AuNCs) has been developed. The reaction time can be shortened from tens of hours to several minutes, thanks to the superheating and non-thermal effects of the MW energy. The optimal experimental conditions including concentrations of BSA, HAuCl4 and NaOH and the MW programme are investigated in detail. The as-synthesised BSA-AuNC product is well characterized by UV-vis spectroscopy, fluorescence spectroscopy, HRTEM, XPS, and IR spectroscopy. The HSA-AuNCs display strong red emission which is efficiently quenched by nitrogen oxides (NOx), demonstrating its great potential in determining the intracellular concentration of NOx. The proposed MW-assisted synthesis method is simple, fast and should be applicable to prepare various protein-or enzyme-protected metal nanoclusters.
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