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Article Dans Une Revue Nano Letters Année : 2007

Structure-Dependent Fluorescence Efficiencies of Individual Single-Walled Carbon Nanotubes

Résumé

Single-nanotube photometry was used to measure the product of absorption cross-section and fluorescence quantum yield for 12 (n,m) structural species of semiconducting SWNTs in aqueous SDBS suspension. These products ranged from 1.7 to 4.5 x 10(-19) cm2/C atom, generally increasing with optical band gap as described by the energy gap law. The findings suggest fluorescent quantum yields of ~8% for the brightest, (10,2) species and introduce the empirical calibration factors needed to deduce quantitative (n,m) distributions from bulk fluorimetric intensities.
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Dates et versions

hal-00169314 , version 1 (03-09-2007)

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Dmitri A. Tsyboulski, John-David R. Rocha, Sergei M. Bachilo, Laurent Cognet, R. Bruce Weisman. Structure-Dependent Fluorescence Efficiencies of Individual Single-Walled Carbon Nanotubes. Nano Letters, 2007, 7 (10), pp.2937-3248. ⟨10.1021/nl071561s⟩. ⟨hal-00169314⟩

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