Silver colloids impregnating or coating bacteria

被引：149

作者：

Efrima, S

Bronk, BV

机构：

[1] Ben Gurion Univ Negev, Dept Chem, IL-84105 Beer Sheva, Israel

[2] USAF, Res Lab, US ERDEC, SCBRD RT,E5951,APG, Aberdeen Proving Ground, MD 21010 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 31期

关键词：

D O I：

10.1021/jp9813903

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：

We produce silver nanocolloids selectively within and on Escherichia coli bacteria. Silver preferentially concentrates in the bacteria, distributes uniformly within them, or, alternatively, forms a rough coating over them. Oscillations in polarized light scattering vs scattering angle are more pronounced and shift to larger angles, compared to a control that has no silver. Very intense surface-enhanced Raman signals are observed for E. coli with a "wall colloid". The main bands can be associated with peptides and polysaccharides in the cell wall and its membrane. This work was extended to Gram-positive Bacillus megaterium.

引用

页码：5947 / 5950

页数：4

共 31 条

[21]

Lin-Vien D., 1991, The Handbook of Infrared and Raman Characteristic Frequencies of Organic Molecules

[22]

Lowenstam H. A., 1989, BIOMINERALIZATION

[23] MOLECULAR TECTONICS IN BIOMINERALIZATION AND BIOMIMETIC MATERIALS CHEMISTRY [J].