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Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes
Abstract
Fluorescence has been observed directly across the band gap of semiconducting carbon nanotubes. We obtained individual nanotubes, each encased in a cylindrical micelle, by ultrasonically agitating an aqueous dispersion of raw single-walled carbon nanotubes in sodium dodecyl sulfate and then centrifuging to remove tube bundles, ropes, and residual catalyst. Aggregation of nanotubes into bundles otherwise quenches the fluorescence through interactions with metallic tubes and substantially broadens the absorption spectra. At pH less than 5, the absorption and emission spectra of individual nanotubes show evidence of band gap–selective protonation of the side walls of the tube. This protonation is readily reversed by treatment with base or ultraviolet light.
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Citations
Cited by
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Bachilo, S. M., Strano, M. S., Kittrell, C., Hauge, R. H., Smalley, R. E., & Weisman, R. B. (2002) · Science · doi:10.1126/science.1078727 · Cited by 3,078
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Huang, X., Jain, P. K., El-Sayed, I. H., & El-Sayed, M. A. (2008) · Lasers in Medical Science · doi:10.1007/s10103-007-0470-x · Cited by 2,376
Chemically Functionalized Carbon Nanotubes
Balasubramanian, K., & Burghard, M. (2005) · Small · doi:10.1002/smll.200400118 · Cited by 1,769
A route to brightly fluorescent carbon nanotubes for near-infrared imaging in mice
Welsher, K., Liu, Z., Sherlock, S. P., Robinson, J. T., Chen, Z., Daranciang, D., & Dai, H. (2009) · Nature Nanotechnology · doi:10.1038/nnano.2009.294 · Cited by 1,287
Nanoparticle Aggregation: Challenges to Understanding Transport and Reactivity in the Environment
Hotze, E. M., Phenrat, T., & Lowry, G. V. (2010) · Journal of Environmental Quality · doi:10.2134/jeq2009.0462 · Cited by 1,257
Metadata
- Authors
- O'Connell, M. J., Bachilo, S. M., Huffman, C. B., Moore, V. C., Strano, M. S., Haroz, E. H., Rialon, K. L., Boul, P. J., Noon, W. H., Kittrell, C., Ma, J., Hauge, R. H., Weisman, R. B., & Smalley, R. E.
- Venue
- Science
- Published
- 2002-07-26
- Volume
- 297
- Issue
- 5581
- Pages
- 593-596
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2127841706
- Cited by
- 3,879
- References
- 0
- FWCI
- 103.41
- Type
- journal article
- Language
- en
- Open access
- closed
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- O'Connell, M. J., Bachilo, S. M., Huffman, C. B., Moore, V. C., Strano, M. S., Haroz, E. H., Rialon, K. L., Boul, P. J., Noon, W. H., Kittrell, C., Ma, J., Hauge, R. H., Weisman, R. B., & Smalley, R. E. (2002). Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes. Science. https://doi.org/10.1126/science.1072631
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