A Comparative Study of Buckminsterfullerene and Higher Fullerene Separations by HPLC

Abstract

Several HPLC columns that have been recommended for the separation of fullerenes were compared. Each column (i.e., stationary phase) had a different optimum mobile phase. In general, mobile phases consisted of binary mixtures of a "good" fullerene solvent and a "poorer" fullerene solvent. Reversed phase stationary phases with alkyl (aliphatic) substituents produced superior analytical separations for all fullerenes. However, stationary phases with aromatic substituents were better for preparative separations. Increasing the proportion of the "poor" fullerene solvent in the mobile phase generally increased resolution and retention but decreased the mass load. Injecting too high a concentration of fullerenes in any column caused peak splitting to occur. The fullerene retention order was the same on all columns and with all mobile phases. The fullerene separation ability of all columns tended to deteriorate with time. Overloading the column or doing preparative separations greatly accelerated the deterioration process. It is believed that irreversible adsorption of fullerenes or fullerene by-products is responsible for the degradation of column performance. © 1995, Taylor & Francis Group, LLC. All rights reserved.

Department(s)

Chemistry

Comments

U.S. Department of Energy, Grant DE FG02 88ER13819

International Standard Serial Number (ISSN)

0148-3919

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Taylor and Francis Group; Taylor and Francis, All rights reserved.

Publication Date

01 Mar 1995

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