ELECTRONIC STRUCTURE OF THE FLUORINATED HIPCO NANOTUBES

摘要

Single-wall carbon nanotubes (SWNTs) produced by high pressure CO decomposition (HiPco) process has been fluorinated using a volatile mixture of BrF_3 and Br_2. The composition of the fluorinated material was estimated by X-ray photoelectron spectroscopy to be C_4F. Raman spectroscopy showed the narrower tubes are more readily fluorinated. Comparison between CKα-spectrum of the fluorinated SWNTs and theoretical spectra obtained for the (8,8) tube models with different fluorine pattern revealed the fluorine atoms preferably form the chains around a tube circumference.