Spectra of in Situ Reduction of Au(Ⅲ) by Phycocyanin and Dynamic Formation of Au(0)

doi:10.7517/j.issn.1674-0475.2006.02.118

Abstract

Abstract: The interaction of Au(Ⅲ) with Phycocyanin(PC) was investigated by ultraviolet-visible,fluorescence and infrared spectra under the condition of 4 ℃ and without light.The results showed that the characteristic absorption of PC at 615 nm decreased gradually with the increase of Au(Ⅲ) concentration and interaction time.Accordingly,its fluorescence emission peak and two fluorescence excitation peaks also decreased.It was also observed by TEM that nano-Au(0) was formed by the PC in situ reduction.The diameter of Au(0) was about 20 nm,which was round,highly dispersed and stable in PC.

Key words: spirulina platensis, phycocyanin, spectroscopy, nano-aurum

CLC Number:

YANG Fang, GUO Zhen-jiang, BAI Yan, HUANG Zhi, ZHENG Wen-jie. Spectra of in Situ Reduction of Au(Ⅲ) by Phycocyanin and Dynamic Formation of Au(0)[J]. Imaging Science and Photochemistry, 2006, 24(2): 118-125.

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