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Published on: August 26, 2009
Flow linear dichroism to probe binding of aromatic molecules and DNA to single-walled carbon nanotubes
Jascindra Rajendra1, Mark Baxendale, Laurence Georges Dit Rap
1Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
Abstract:
Structures of carbon nanotube/ligand complexes were studied by flow linear dichroism (the differential absorption of light polarized parallel and perpendicular to the flow orientation direction) with the aim of establishing linear dichroism as a technique to study such systems. Anthracene, naphthalene, and DNA were chosen as ligands, and the potential for flow linear dichroism to probe ligands noncovalently (as well as covalently) bound to single-walled nanotubes is reported. Linear dichroism enables the determination of approximate orientations of the ligands on the carbon nanotubes.

