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Mechanism of Electrolyte-Induced Brightening in Single-Wall Carbon Nanotubes

hal.structure.identifierPhysical Chemistry and Applied Spectroscopy
dc.contributor.authorDUQUE, Juan G.
hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorOUDJEDI, Laura
hal.structure.identifierPhysical Chemistry and Applied Spectroscopy
dc.contributor.authorCROCHET, Jared
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorTRETIAK, Sergei
hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorLOUNIS, Brahim
hal.structure.identifierCenter for Integrated Nanotechnologies
dc.contributor.authorDOORN, Stephen K.
hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorCOGNET, Laurent
dc.date.accessioned2023-05-12T10:21:15Z
dc.date.available2023-05-12T10:21:15Z
dc.date.issued2013-02-19
dc.identifier.issn0002-7863
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181105
dc.description.abstractEnWhile addition of electrolyte to sodium dodecyl sulfate suspensions of single-wall carbon nanotubes has been demonstrated to result in significant brightening of the nanotube photoluminescence (PL), the brightening mechanism has remained unresolved. Here, we probe this mechanism using time-resolved PL decay measurements. We find that PL decay times increase by a factor of 2 on addition of CsCl as the electrolyte. Such an increase directly parallels an observed near-doubling of PL intensity, indicating the brightening results primarily from changes in nonradiative decay rates associated with exciton diffusion to quenching sites. Our findings indicate that a reduced number of these sites results from electrolyte-induced reorientation of the surfactant surface structure that partially removes pockets of water from the tube surface where excitons can dissociate, and thus underscores the contribution of interfacial water in exciton recombination processes.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enMechanism of Electrolyte-Induced Brightening in Single-Wall Carbon Nanotubes
dc.typeArticle de revue
dc.identifier.doi10.1021/ja4001757
dc.subject.halPhysique [physics]/Physique [physics]/Biophysique [physics.bio-ph]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Autre [cond-mat.other]
bordeaux.journalJournal of the American Chemical Society
bordeaux.page3379
bordeaux.volume135
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-00796934
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00796934v1
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