Study Of Calixarene/Ionic Liquid And Cellulose/ionic Liquid As Gas Chromatographic Stationary Phase

In this paper, three newly capillary columns, including OmIm+BF4-，C[4]TECM/OmIm+BF4-and CTPC/OmIm+BF4-stationary phases respectively, wereprepared by the static coating method. Their properties had been characterizedthrough thermodynamic parameters and linear solvation energy relationship (LSER).The experimental results showed that these stationary phases possess goodfilm-forming ability. For three columns, the relationships between lnk and1/T for theprobe molecules are an excellent linear with higher correlation coefficient, indicatingthat the interaction forces between the probe molecules and the stationary phase didnot change for the probe molecules over the entire temperature range studied. And,the relationship between logk and the solvation solute descriptors were analyzed bystepwise multiple linear regression in order to set LSER model. It can be found thatthe relationship between logk and solvation solute descriptors (such as A, S, L) isgood linear. The logkpredpredicated from the LSER model for each probe moleculewas plotted against the corresponding experimental logkex. It can be found that theoverall linearity of the correlation plot with a slope near unity, confirming that the LSER model used in this work is indeed a suitable model for the selected solutes inthis chromatographic system. Additionally, it can been found that the contribution ofeach interaction between C[4]TECM or C[4]TECM/OmIm+BF4-stationary phases andsolute molecules is in the order of A L S, as the contribution of each interactionbetween the CTPC/OmIm+BF4-stationary phase and solute molecules is in the order ofL A S. that is the main interactions include hydrogen bonding interaction,dispersive interaction and dipole-dipole interaction.The C[4]TECM or C[4]TECM/OmIm+BF4-stationary phases can be used to theseparation of alcohol and arylamine compounds. The CTPC/OmIm+BF4-can be used toenantioseparation of sec-butyl-2,2,2-trifluoroacetate. However, to the best of ourknowledge, the mixture of Calixarenes and RTILs used as GC stationary phases arenot yet reported. C[4]TECM/OmIm+BF4-and CTPC/OmIm+BF4-have gooddevelopment prospect.