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. Author manuscript; available in PMC: 2010 May 20.
Published in final edited form as: J Am Chem Soc. 2009 May 20;131(19):6775–6784. doi: 10.1021/ja809054c

Figure 1.

Figure 1

(A&B) Resonance Raman spectra of the radial breathing mode (RBM) region of acid-treated SWNTs before (A) and after (B) 57ECA-assisted enrichment. Prior to spectral collection using 514 nm laser excitation, both samples were vacuum-annealed at 300 °C to remove all absorbates including 57ECA. Black circles and red lines denoted the experimental and summated data following peak deconvolution using Lorentzian line shapes. White and grey peaks indicate sem- and met- SWNT constituents, respectively. (C) UV-Vis-NIR spectrum of 57ECA enriched nanotubes dispersed in THF. (D) Optical image of an NMR tube containing a stable, 57ECA-dispersed, nanotube suspension in THF-d8.