NMR Detection of Single-Walled Carbon Nanotubes in Solution
- 29 April 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (20) , 7517-7520
- https://doi.org/10.1021/ja050342a
Abstract
The detection of nanotube carbons in solution by 13C NMR is reported. The highly soluble sample was from the functionalization of 13C-enriched single-walled carbon nanotubes (SWNTs) with diamine-terminated oligomeric poly(ethylene glycol) (PEG1500N). The ferromagnetic impurities due to the residual metal catalysts were removed from the sample via repeated magnetic separation. The nanotube carbon signals are broad but partially resolved into two overlapping peaks, which are tentatively assigned to nanotube carbons on semiconducting (upfield) and metallic (downfield) SWNTs. The solid-state NMR signals of the same sample are similarly resolved. Mechanistic and practical implications of the results are discussed.Keywords
This publication has 18 references indexed in Scilit:
- Density Functional Calculations of the 13C NMR Chemical Shifts in (9,0) Single-Walled Carbon NanotubesJournal of the American Chemical Society, 2004
- Polymer-Functionalized Carbon Nanotubes Investigated by Solid-State Nuclear Magnetic Resonance and Scanning Tunneling MicroscopyThe Journal of Physical Chemistry B, 2004
- Characterization of Covalent Functionalized Carbon NanotubesThe Journal of Physical Chemistry B, 2004
- Gas adsorption in single-walled carbon nanotubes studied by NMRPhysical Review B, 2003
- Functionalization of Single-Walled Carbon Nanotubes with (R-)Oxycarbonyl NitrenesJournal of the American Chemical Society, 2003
- Mechanical Purification of Single-Walled Carbon Nanotube Bundles from Catalytic ParticlesNano Letters, 2002
- NMR Chemical Shift of Single-Wall Carbon NanotubesPhysical Review Letters, 2001
- NMR evidence for dynamics of nanotubes in ropesPhysical Review B, 2001
- Crossed Nanotube JunctionsScience, 2000
- Crystalline Ropes of Metallic Carbon NanotubesScience, 1996