Structure and properties of C<sub>60</sub>@SWNT
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Our recent achievement of high-yield C60@SWNT synthesis facilitates characterization by various techniques, including selected area electron diffraction (SAD) and Raman spectroscopy. The obtained SAD patterns show that interior C60 molecules sit on a simple 1-D lattice having a parameter of 1.00 nm. Simulated SAD patterns and real-space measurements both support this determination and do not indicate a lattice with a more complex basis, e.g. a dimer basis. Empty and bulk-filled SWNTs (22%, 56%, and 90% yields), each subjected to identical processing steps, were examined by room temperature Raman spectroscopy. Systematic differences are seen between the spectra of filled and unfilled SWNTs, particularly with respect to the G- and RBM-bands of the nanotubes. We present a possible explanation for this behavior.
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Copyright Materials Research Society. Reprinted from MRS Proceedings Volume 706.<br> 2001 Fall Meeting Symposium Z<br> Making Functional Materials with Nanotubes<br> Publisher URL: http://www.mrs.org/members/proceedings/fall2001/z/Z6_20.pdf <br><p>