Preparation and polymerization study of (C60)n@SWNTs

We report here a vapor diffusion method prepared peapod samples (C60 molecules in single walled carbon nanotubes (SWNTs)). The high pressure Raman measurements on the peapod samples by using a Mao-Bell type diamond anvil cell (DAC) will carry on under in situ or ex situ high pressure. The peapod samples will expose under UV laser line irradiation for the in situ high pressure investigation. The polymerization effect of C60 molecules inside SWNTs under both laser irradiation and pressure has been studied. The Raman spectra results of peapod samples from high pressure indicated that C60s become one-dimensional orthorhombic polymer.