Interaction between the surface of the silver nanoparticles prepared by γ-irradiation and organic molecules containing thiol group

被引:98
作者
Choi, SH
Lee, SH
Hwang, YM
Lee, KP [1 ]
Kang, HD
机构
[1] Kyungpook Natl Univ, Grad Sch, Dept Chem, Taegu 702701, South Korea
[2] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea
关键词
interaction; silver colloidal nanoparticles; gamma-irradiation; hydrogen bonding; chiral-enhanced phenomena; circular dichroism spectroscopy;
D O I
10.1016/S0969-806X(03)00097-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The colloidal silver nanoparticles were prepared by the gamma-irradiation of silver nitrate (AgNO3) in a mixture solution of water and 2-propanol in the presence of poly(vinylpyrrolidone) as a colloidal stabilizer. The Ag colloids obtained by gamma-irradiation were characterized by use of XRD and TEM. The surface of the Ag colloids were modified by use of mercaptosuccinic acid (MSA), (D)-cysteine (Cys), and (L)-CYS, respectively. The MSA and (L)-Cys-capped Ag colloids were aggregated because of hydrogen bonding of the carboxylic acid and amino acid group, respectively. From the analysis by CD spectroscopy, it was shown that chiral-enhanced phenomena were obtained in (L)- and (D)-Cys-capped Ag colloids. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:517 / 521
页数:5
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