The influence of DNA wrapping on SWNT optical absorption in perpendicular polarization

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationTechnical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
Pages27-30
Number of pages4
Volume1
StatePublished - Oct 13 2008
Event2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008 - Quebec City, QC, United States
Duration: Jun 1 2008Jun 5 2008

Other

Other2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
CountryUnited States
CityQuebec City, QC
Period6/1/086/5/08

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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