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Yu. M. Yevdokimov
Gold nanoparticles and DNA liquid crystals
Abstract
This brief review covers the effect of
small size gold nanoparticles on cholesteric liquid-crystalline dispersions
formed by double-strandedhigh mol. mass DNA molecules. It is shown,
that as well as in case of liquid crystals derivated by low mol. mass
compounds, this activity results in: 1) nematization of a spatial structure of
dispersion particles, and 2) incorporation of small size gold nanoparticles in
“free” space between DNA molecules, forming quasinematic layers of dispersion
particles. As a result of these processes the “integrated” structure (“rigid”
spatial DNA structure) is formed, which possess unique properties.
Key words: gold nanoparticles structure and
properties, DNA liquid-crystalline dispersions, interaction of gold nanoparticles
with single- and double-stranded DNA, circular dichroism, atomic-force
microscopy.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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