Retention of C60 and C70 fullerenes on reversed-phase high-performance liquid chromatographic stationary phases.
The separation of C60 and C70 fullerenes on four different polysiloxane stationary phases was examined. It was determined that polar solvents can be used as mobile phases effectively for the separation of fullerene molecules. Unlike previously published work, a polymeric octadecyl siloxane (ODS) stationary phase provided higher separation factors for C70/C60 than did monomeric ODS stationary phases or phenyl substituted stationary phases. For example, for a methanol-diethyl ether (50:50, v/v) mobile phase and C60, k' approximately 5.0 separation factors, alpha = 3.3, were achieved with polymeric ODS compared to alpha = 2.2, with a monomeric ODS stationary phase. A linear solvation energy relationship (LSER) was used to model the importance of solvent interactions and stationary phase interaction to solute retention.
Cui
Y
Y
Department of Chemistry, Ohio State University, Columbus 43210.
Lee
S T
ST
Olesik
S V
SV
Flory
W
W
Mearini
M
M
D002244:Carbon / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D037741:Fullerenes; D012833:Siloxanes; D012997:Solvents
D037741:Fullerenes; D012833:Siloxanes; D012997:Solvents; C069836:fullerene C70; D002244:Carbon; C069837:fullerene C60