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Published April 1, 1998 | public
Journal Article

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

Abstract

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(ethylene-co-vinyl acetate) (82% ethylene) detectors.

Additional Information

© 1998 American Chemical Society. Received for review July 15, 1997. Accepted January 13, 1998. Publication Date (Web): February 20, 1998. R.D.S. thanks Lawerence Livermore National Laboratory for a Professional Research and Teaching leave. B.J.D. thanks the Natural Science and Engineering Research Council of Canada for a 1967 Centennial Fellowship. We gratefully acknowledge support for this work by DARPA, NASA, and the Army Research Office.

Additional details

Created:
August 19, 2023
Modified:
October 17, 2023