Differential Detection of Enantiomeric Gaseous Analytes Using Carbon Black-Chiral Polymer Composite, Chemically Sensitive Resistors

Erik J. Severin, Robert D. Sanner, Brett J. Doleman, Nathan S Lewis

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Carbon black-chiral polymer composites were used to provide diagnostic differential resistance responses in the presence of enantiomers of chiral gaseous analytes. Vapors of (+)-2-butanol and (-)-2-butanol, (+)-α-pinene and (-)-α-pinene, (+)-epichlorohydrin and (-)-epichlorohydrin, and methyl (+)-2-chloropropionate and methyl (-)-2-chloropropionate were generated and passed over a chemically sensitive carbon black-poly ((R)-3-hydroxybutyrate-co-(R)-3-hydroxyvalerate) (77% butyrate) composite resistor. Each enantiomer of a pair produced a distinct relative differential resistance change on the chiral detector, whereas both enantiomers of a set produced identical signals on achiral carbon black-poly(ethyleneco-vinyl acetate) (82% ethylene) detectors.

Original languageEnglish
Pages (from-to)1440-1442
Number of pages3
JournalAnalytical Chemistry
Issue number7
Publication statusPublished - Apr 1 1998


ASJC Scopus subject areas

  • Analytical Chemistry

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