Surfactant-Dependent Exciton Mobility in Single-Walled Carbon Nanotubes Studied by Single-Molecule Reactions

6533b86ffe1ef96bd12ce839

RESEARCH PRODUCT

Surfactant-Dependent Exciton Mobility in Single-Walled Carbon Nanotubes Studied by Single-Molecule Reactions

Dmitri A. Tsyboulski Anni J. Siitonen Anni J. Siitonen R. Bruce Weisman Sergei M. Bachilo

subject

Nanotube Materials science Light Surface Properties Exciton Molecular Conformation Selective chemistry of single-walled nanotubes Molecular Probe Techniques Bioengineering Nanotechnology Carbon nanotube Chemical reaction law.invention Surface-Active Agents Condensed Matter::Materials Science Pulmonary surfactant law Materials Testing Nanotechnology Scattering Radiation Molecule General Materials Science Particle Size Nanotubes Carbon Condensed Matter::Other Mechanical Engineering General Chemistry Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Optical properties of carbon nanotubes Chemical physics Luminescent Measurements Crystallization

description

Measurements of stepwise photoluminescence quenching in individual, (n,m)-selected single-walled carbon nanotubes (SWCNTs) undergoing chemical reaction have been analyzed to deduce mobilities of optically generated excitons. For (7,5) nanotubes, the mean exciton range varies between approximately 140 and 240 nm for different surfactant coatings and correlates weakly with nanotube PL intensity. The results are consistent with a model of localized SWCNT excitons having substantial diffusional mobility along the nanotube axis.

year	journal	country	edition	language
2010-04-10	Nano Letters

https://doi.org/10.1021/nl9039845

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