Molecular-crowding-induced clustering of DNA-wrapped carbon nanotubes for facile length fractionation.

  title={Molecular-crowding-induced clustering of DNA-wrapped carbon nanotubes for facile length fractionation.},
  author={Constantine Y. Khripin and Nicholas Arnold-Medabalimi and Ming Zheng},
  journal={ACS nano},
  volume={5 10},
Emerging applications require single-wall carbon nanotubes (SWCNTs) of well-defined length. Yet the use of length-defined SWCNTs is limited, in part due to the lack of an easily accessible materials preparation method. Here, we present a new strategy for SWCNT length fractionation based on molecular crowding induced cluster formation. We show that the addition of polyethylene glycol (PEG) as a crowding agent into DNA-wrapped SWCNT dispersion leads to the formation of reversible, nematic, and… CONTINUE READING
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Measurement of Electrostatic Properties of DNA Carbon Nanotube Hybrids by Capillary Electrophoresis

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