Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes

Michael J. O'Connell, Sergei M. Bachilo, Chad B. Huffman, Valerie C. Moore, Michael S. Strano, Erik H. Haroz, Kristy L. Rialon, Peter J. Boul, William H. Noon, Carter Kittrell, Jianpeng Ma, Robert H. Hauge, R. Bruce Weisman, Richard E. Smalley

doi:10.1126/science.1072631

Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes

DOI Web Site 被引用文献238件

Michael J. O'Connell

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Sergei M. Bachilo

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Chad B. Huffman

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Valerie C. Moore

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Michael S. Strano

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Erik H. Haroz

Department of Physics,
Kristy L. Rialon

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Peter J. Boul

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
William H. Noon

Department of Bioengineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Carter Kittrell

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Jianpeng Ma

Department of Bioengineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Robert H. Hauge

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
R. Bruce Weisman

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,
Richard E. Smalley

Department of Chemistry, Rice Quantum Institute, and Center for Nanoscale Science and Technology,

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説明

<jats:p>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.</jats:p>