Simultaneous determination of C-60 and C-70 fullerenes by a spectrophotometric method

Cicek B., KENAR A., NAZIR H.

FULLERENE SCIENCE AND TECHNOLOGY, vol.9, no.1, pp.103-111, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 1
  • Publication Date: 2001
  • Doi Number: 10.1081/fst-100000169
  • Journal Name: FULLERENE SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.103-111
  • Ankara University Affiliated: Yes

Abstract

In all fullerene-producing systems, reaction products were black soot extracts reported to contain a 5-25% fullerene mixture. Toluene extraction of the soot results in a solution of C-60, C-70, and higher fullerenes. Without separation, absolute determination of the contents is not possible, leaving the researcher to comment only on the C-60/C-70 ratio of the solution. High-performance liquid chromatography, nuclear magnetic resonance, and scanning tunneling microscopy imaging techniques were reported in the literature for determining the C-60/C-70 ratio of the mixtures. These methods require tedious experiments and produce slightly differing results as well. In this communication, a new and relatively quick method is proposed for the simultaneous determination of the yields of C-60 and C-70 (not the ratio) in fullerene-containing solutions by ultraviolet-visible spectrophotometric analysis.