Separation of positional isomers on A,C- and A,D-bridged calix[6]arene as stationary phases in capillary GC

Jung Hag Park, Hee Jung Lim, Young Kyu Lee, Jung Kon Park, Byoung Eog Kim, Jae Jeong Ryoo, Kwang Phil Lee

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A,C-Bridged (ACCX) and A,D-bridged isopropyldimethylsilylcalix[6]arene (ADCX) dissolved in OV-1701 were used as stationary phases in isothermal capillary gas chromatographic separation of some positional isomers. Retention factors and separation factors for the isomers were measured. The isomers investigated are well resolved on the two phases. Retention of all the solutes investigated is longer on ACCX than on ADCX. The longer retention on A,C-bridged calix[6]arene is probably due to extra inductive interactions of the solute molecule with the carbonyl moieties in the phase. Separation factors for closely eluting isomer pairs are similar on the two phases. This seems to indicate that the carbonyl moieties do not play an appreciable role in discriminating the isomer molecules on entering the cavity of the calixarene if the solute is retained by the inclusion process.

Original languageEnglish
Pages (from-to)679-682
Number of pages4
JournalHRC Journal of High Resolution Chromatography
Volume22
Issue number12
DOIs
StatePublished - 1999

Keywords

  • A,C- and A,D-bridged calix[6]arene
  • Capillary gas chromatography
  • Geometric and positional isomer separation
  • Stationary phase

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