Raman scattering from nanomaterials encapsulated into single wall carbon nanotubes

Raman scattering is used to study the filling of single wall carbon nanotubes with C-60, C59N and anthracene. It is demonstrated how reversible opening and closing of the tubes can be used to check on the success of the filling process. In the case Of C59N, filling was performed from the gas phase from 1: 1 mixture between C-60 and C59N. Comparing the Raman spectra from the encapsulated mixture with the spectra from C-60 inside the tubes reveals that most of the molecules have reacted to form either the dimer (C59N)(2) or the hetero-dimer C-60-C59N. Anthracene is demonstrated to enter the tubes but the molecule is subjected to a considerable geometrical change including some loss of hydrogens. Copyright (c) 2007 John Wiley & Sons, Ltd.