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Metal-enhanced fluorescence of carbon nanotubes.

Publication ,  Journal Article
Hong, G; Tabakman, SM; Welsher, K; Wang, H; Wang, X; Dai, H
Published in: Journal of the American Chemical Society
November 2010

The photoluminescence (PL) quantum yield of single-walled carbon nanotubes (SWNTs) is relatively low, with various quenching effects by metallic species reported in the literature. Here, we report the first case of metal enhanced fluorescence (MEF) of surfactant-coated carbon nanotubes on nanostructured gold substrates. The photoluminescence quantum yield of SWNTs is observed to be enhanced more than 10-fold. The dependence of fluorescence enhancement on metal-nanotube distance and on the surface plasmon resonance (SPR) of the gold substrate for various SWNT chiralities is measured to reveal the mechanism of enhancement. Surfactant-coated SWNTs in direct contact with metal exhibit strong MEF without quenching, suggesting a small quenching distance for SWNTs on the order of the van der Waals distance, beyond which the intrinsically fast nonradiative decay rate in nanotubes is little enhanced by metal. The metal enhanced fluorescence of SWNTs is attributed to radiative lifetime shortening through resonance coupling of SWNT emission to the reradiating dipolar plasmonic modes in the metal.

Duke Scholars

Published In

Journal of the American Chemical Society

DOI

EISSN

1520-5126

ISSN

0002-7863

Publication Date

November 2010

Volume

132

Issue

45

Start / End Page

15920 / 15923

Related Subject Headings

  • Quantum Dots
  • Nanotubes, Carbon
  • Gold
  • General Chemistry
  • Fluorescence
  • 40 Engineering
  • 34 Chemical sciences
  • 03 Chemical Sciences
 

Citation

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MLA
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Hong, G., Tabakman, S. M., Welsher, K., Wang, H., Wang, X., & Dai, H. (2010). Metal-enhanced fluorescence of carbon nanotubes. Journal of the American Chemical Society, 132(45), 15920–15923. https://doi.org/10.1021/ja1087997
Hong, Guosong, Scott M. Tabakman, Kevin Welsher, Hailiang Wang, Xinran Wang, and Hongjie Dai. “Metal-enhanced fluorescence of carbon nanotubes.Journal of the American Chemical Society 132, no. 45 (November 2010): 15920–23. https://doi.org/10.1021/ja1087997.
Hong G, Tabakman SM, Welsher K, Wang H, Wang X, Dai H. Metal-enhanced fluorescence of carbon nanotubes. Journal of the American Chemical Society. 2010 Nov;132(45):15920–3.
Hong, Guosong, et al. “Metal-enhanced fluorescence of carbon nanotubes.Journal of the American Chemical Society, vol. 132, no. 45, Nov. 2010, pp. 15920–23. Epmc, doi:10.1021/ja1087997.
Hong G, Tabakman SM, Welsher K, Wang H, Wang X, Dai H. Metal-enhanced fluorescence of carbon nanotubes. Journal of the American Chemical Society. 2010 Nov;132(45):15920–15923.
Journal cover image

Published In

Journal of the American Chemical Society

DOI

EISSN

1520-5126

ISSN

0002-7863

Publication Date

November 2010

Volume

132

Issue

45

Start / End Page

15920 / 15923

Related Subject Headings

  • Quantum Dots
  • Nanotubes, Carbon
  • Gold
  • General Chemistry
  • Fluorescence
  • 40 Engineering
  • 34 Chemical sciences
  • 03 Chemical Sciences