Solid-State 13C NMR Assignment of Carbon Resonances on Metallic and Semiconducting Single-Walled Carbon Nanotubes

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• 作者：Chaiwat Engtrakul ; Mark F. Davis ; Kevin Mistry ; Brian A. Larsen ; Anne C. Dillon ; Michael J. Heben ; Jeffrey L. Blackburn
• 刊名：Journal of the American Chemical Society
• 出版年：2010
• 出版时间：July 28, 2010
• 年：2010
• 卷：132
• 期：29
• 页码：9956-9957
• 全文大小：125K
• 年卷期：v.132,no.29(July 28, 2010)
• ISSN：1520-5126

文摘

Solid-state ¹³C NMR spectroscopy was used to investigate the chemical shift of nanotube carbons on m- and s-SWNTs (metallic and semiconducting single-walled nanotubes) for samples with widely varying s-SWNT content, including samples highly enriched with nearly 100% m- and s-SWNTs. High-resolution ¹³C NMR was found to be a sensitive probe for m- and s-SWNTs in mixed SWNT samples with diameters of 1.3 nm. The two highly enriched m- and s-SWNT samples clearly exhibited features for m- and s-SNWT ¹³C nuclei (123 and 122 ppm, respectively) and were successfully fit with a single Gaussian, while five mixed samples required two Gaussians for a satisfactory fit.