Structure and properties of C60@SWNT

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 Gand RBM-bands of the nanotubes. We present a possible explanation for this behavior. Comments Copyright Materials Research Society. Reprinted from MRS Proceedings Volume 706. 2001 Fall Meeting Symposium Z Making Functional Materials with Nanotubes Publisher URL: http://www.mrs.org/members/proceedings/fall2001/z/Z6_20.pdf This conference paper is available at ScholarlyCommons: http://repository.upenn.edu/mse_papers/17 Structure and properties of C60@SWNT Brian W. Smith, Richard M. Russo, S.B. Chikkannanavar, Ferenc Stercel, David E. Luzzi University of Pennsylvania, Department of Materials Science and Engineering, 3231 Walnut Street, Philadelphia, PA 19104-6272, USA