Imaging Science and Photochemistry ›› 2005, Vol. 23 ›› Issue (3): 209-217.DOI: 10.7517/j.issn.1674-0475.2005.03.209

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The Photochemistry Properties on Reactions of Amino Acids and Silver

XIAO Zi-dan1,2, ZHANG Chao-ping1, SHEN De-jun3   

  1. 1. Department of Chemistry, Guizhou University, Guiyang 550025, Guizhou, P.R. China;
    2. Department of Chemistry and Environmental Engineering, Changsha University of Science and Technology, Changsha 410000, Hunan, P.R. China;
    3. Department of Chemistry, Guiyang College, Guiyang 550008, Guizhou, P.R. China
  • Received:2004-12-08 Revised:2005-03-04 Online:2005-05-23 Published:2005-05-23

Abstract: The reaction of amino acids and silver is a thermal spontaneous process without additional energy. But when light introduced into the system the reaction speed will be changed. According to our research, the order of light intensity when absorption at Soret-band found is as follows: Asp-Ag(Ⅰ)>Thr-Ag(Ⅰ)>Tyr-Ag(Ⅰ)>Lys-Ag(Ⅰ). For Cys-Ag system, the reactions between oxygen of α-carboxyl group and nitrogen of α-amino group with silver(Ⅰ) ion were promoted by lighting. But the reaction of S atom and silver (Ⅰ) ion was no relations with light intensity. These processes are light-assistance reactions.

Key words: amino acid, silver(Ⅰ) ion, light-assistance reaction, UV-Vis spectra, fluorescence spectra

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