| Autor: |
Suqin Wang, Min Gu, Yao Yu, Xiaonong Xu, Jian Wu, Guoqiu Yuan, Duan Feng |
| Předmět: |
|
| Zdroj: |
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics; 7/10/2005, Vol. 19 Issue 15-17, p2398-2403, 6p |
| Abstrakt: |
We have prepared three C60 polymers under high-temperature and high-pressure conditions, and confirmed them to be orthorhombic (1D), tetragonal and rhombohedral (2D) polymer by XRD method, respectively. The 13C MAS NMR spectra of both orthorhombic and rhombohedral polymer have been measured and two resonance peaks observed. One resonance at 73 ppm resulted from the sp3 carbons with an intermolecular bonding, the other at 145 ppm is from the inequivalent sp2 carbons on the C60 molecule. For 1D polymer, the fine structure of the main peak at 145 ppm has been analyzed. By simulation of the 13C MAS NMR peak shape of the inequivalent carbons, we propose that there exist nine inequivalent carbons on a C60 molecule in the orthorhombic (1D) polymer. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
