The Interface Fluorescence and Resonance Scattering Spectral Properties of Ag2S Nanoparticles in Liquid Phase
ZHANG Biao-ming1, JIANG Zhi-liang1*, ZHAI Hao-ying1, HE You-qiu2, LIU Shao-pu2
1.Institute of Material Science and Engineering, Guangxi Normal University, Guilin 541004, China 2.School of Chemistry and Chemical Engineering, Southwest-China Normal University，Chongqing 400715, China
Abstract：S2- and Ag+ form stable Ag2S nanoparticles in the presence of sodium dodecyl sulphate(SDS).It exhibits a strong resonance scattering peak at 470 nm and a strong fluorescence peak at 470 nm when excitation wavelength is at 200 nm.The effects of TAA and Ag+ concentration on the fluorescence intensities are consistent with those on the resonance scattering signals.The resonance scattering and fluorescence intensities all increase with Ag+ concentration in the range of 0-8.0×10-5 mol·L-1.The results verified that there is a correlation between the fluorescence and resonance scattering.The fluorescence is the interface fluorescence of Ag2S nanoparticles in liquid phase.
Key words：Ag2S nanoparticles in liquid phase;Interface fluorescence;Resonance scattering
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