Physics – Biological Physics
Scientific paper
2012-02-10
ACS Nano, 2011, 5 (2), pp 1141-1146
Physics
Biological Physics
Published in ACS Nano http://pubs.acs.org/doi/abs/10.1021/nn102763b
Scientific paper
10.1021/nn102763b
Nanotube patterning may occur naturally upon the spontaneous self-assembly of biomolecules onto the surface of single-walled carbon nanotubes (SWNTs). It results in periodically alternating bands of surface properties, ranging from relatively hydrophilic to hydrophobic, along the axis of the nanotube. Single Chain Mean Field (SCMF) theory has been used to estimate the free energy of systems in which a surface patterned nanotube penetrates a phospholipid bilayer. In contrast to un-patterned nanotubes with uniform surface properties, certain patterned nanotubes have been identified that display a relatively low and approximately constant system free energy (10 kT) as the nanotube traverses through the bilayer. These observations support the hypothesis that the spontaneous self-assembly of bio-molecules on the surface of SWNTs may facilitate nanotube transduction through cell membranes.
Baulin Vladimir A.
Pogodin Sergey
Slater Nigel K. H.
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