Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single Molecule Reactions

Simple item page
dc.creatorCognet, Laurent
dc.creatorTsyboulski, Dmitri A.
dc.creatorRocha, John-David R.
dc.creatorDoyle, Condell D.
dc.creatorTour, James M.
dc.creatorWeisman, R. Bruce
dc.date2007-07-22
dc.date.accessioned2026-07-07T08:19:38Z
dc.date.available2026-07-07T08:19:38Z
dc.descriptionSingle-molecule chemical reactions with individual single-walled carbon nanotubes were observed through near-infrared photoluminescence microscopy. The emission intensity within distinct submicrometer segments of single nanotubes changes in discrete steps after exposure to acid, base, or diazonium reactants. The steps are uncorrelated in space and time, and reflect the quenching of mobile excitons at localized sites of reversible or irreversible chemical attack. Analysis of step amplitudes reveals an exciton diffusional range of about 90 nanometers, independent of nanotube structure. Each exciton visits approximately 104 atomic sites during its lifetime, providing highly efficient sensing of local chemical and physical perturbations.
dc.identifierhttps://arxiv.org/abs/0707.3246
dc.identifierhttp://arxiv.org/abs/0707.3246
dc.identifierScience 316, 5830 (08/06/2007) 1465-1468
dc.identifierdoi:10.1126/science.1141316
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/134827
dc.subjectOptics
dc.subjectOther Condensed Matter
dc.titleStepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single Molecule Reactions
dc.typetext

Files

Collections

arXiv