Enrichment of a fullerene mixture with endohedral metallofullerenes: methodology and evaluation

Abstract

A fullerene mixture was enriched with endohedral metallofullerenes (EMF) using Lewis acid (TiCl₄), which took 22 min, whereas the standard method requires about 8 h. An algorithm for assessing small-area chromatographic peaks has been proposed, which has improved the accuracy of determination. For example, the area of the C₈₄ peak was 4.24% using the developed program, while the use of chromatograph software estimated the area of this peak to be 1.78%.

Keywords:

• Endohedral metallofullerene
• enrichment
• Lewis acids
• high performance liquid chromatography
• numerical integration of the spectra

Disclosure statement

No potential conflict of interest was reported by the authors.

Table 1. Results of processing the relative percentage content of various types of fullerenes in the chromatograph software (ω_c) and in the developed program (ω_p).

Additional information

Funding

The research was carried out within the state assignment of Kirensky Institute of Physics, FSBSI Federal Research Center “Krasnoyarsk Science Center SB RAS”.