TY - GEN
T1 - The influence of DNA wrapping on SWNT optical absorption in perpendicular polarization
AU - Snyder, S.
AU - Rotkin, S. V.
PY - 2008
Y1 - 2008
N2 - Numerous electronics applications have been proposed for discrete single-walled carbon nanotubes (SWNTs) due to their exceptional electronic properties, which vary with diameter and chirality of the tube. Any solution processing to sort as-grown SWNTs by type requires a robust dispersion method that must overcome nanotube insolubility and strong van der Waals attraction between tubes. Functionalization of SWNTs with helically wrapped single-stranded DNA yields stable hybrid structures that disperse in aqueous solution.[1], [2] Since these hybrids are intended for use in optical and electronic devices, we investigate whether the optical properties of DNA-wrapped SWNTs are different than those of bare nanotubes. We find changes in the optical absorption spectra in perpendicular polarization, including circular dichroism of achiral nanotubes. These effects may serve as characterization tools to identify the presence of a DNA wrap.
AB - Numerous electronics applications have been proposed for discrete single-walled carbon nanotubes (SWNTs) due to their exceptional electronic properties, which vary with diameter and chirality of the tube. Any solution processing to sort as-grown SWNTs by type requires a robust dispersion method that must overcome nanotube insolubility and strong van der Waals attraction between tubes. Functionalization of SWNTs with helically wrapped single-stranded DNA yields stable hybrid structures that disperse in aqueous solution.[1], [2] Since these hybrids are intended for use in optical and electronic devices, we investigate whether the optical properties of DNA-wrapped SWNTs are different than those of bare nanotubes. We find changes in the optical absorption spectra in perpendicular polarization, including circular dichroism of achiral nanotubes. These effects may serve as characterization tools to identify the presence of a DNA wrap.
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M3 - Conference contribution
AN - SCOPUS:53349176645
SN - 9781420085075
SN - 9781420085037
T3 - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
SP - 27
EP - 30
BT - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
T2 - 2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
Y2 - 1 June 2008 through 5 June 2008
ER -