Characterization of surface-confined ionic liquid stationary phases: impact of cation and anion identity on retention.
Anal Bioanal Chem
; 393(1): 283-94, 2009 Jan.
Article
de En
| MEDLINE
| ID: mdl-18998116
ABSTRACT
A series of surface-confined ionic liquid (SCIL) stationary phases for high-performance liquid chromatography were synthesized in-house. The synthesized phases were characterized by the linear solvation energy relationship (LSER) method to determine the effect of residual linking ligands and the role of the cation and the anion on retention. Statistical analysis was utilized to determine whether the system coefficients returned from multiple linear regression analysis of chromatographic retention data for a set of 28 neutral aromatic probe solutes were significantly different. Examination of the energetics of retention via kappa-kappa plots agrees with the results obtained from the LSER analysis. Residual linking ligands were determined to contribute reversed-phase-type retention character to the chromatographic system. Furthermore, retention on the SCIL phases was observed to be more profoundly affected by the identity of the anion than by that of the cation.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Chromatographie en phase liquide à haute performance
/
Liquides ioniques
Type d'étude:
Prognostic_studies
Langue:
En
Journal:
Anal Bioanal Chem
Année:
2009
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique