Silver colloids impregnating or coating bacteria

S. Efrima; B. V. Bronk

doi:10.1021/jp9813903

Silver colloids impregnating or coating bacteria

S. Efrima, B. V. Bronk

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

175 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	5947-5950
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	102
Issue number	31
DOIs	https://doi.org/10.1021/jp9813903
State	Published - 30 Jul 1998

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp9813903

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AB - 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.

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Silver colloids impregnating or coating bacteria

Abstract

ASJC Scopus subject areas

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