Severin E J, Sanner R D, Doleman B J, Lewis N S
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125.
Anal Chem. 1998 Apr 1;70(7):1440-3. doi: 10.1021/ac970757h.
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.
炭黑-手性聚合物复合材料用于在手性气态分析物对映体存在的情况下提供诊断性的差分电阻响应。生成了(+)-2-丁醇和(-)-2-丁醇、(+)-α-蒎烯和(-)-α-蒎烯、(+)-环氧氯丙烷和(-)-环氧氯丙烷以及(+)-2-氯丙酸甲酯和(-)-2-氯丙酸甲酯的蒸汽，并使其通过化学敏感的炭黑-聚((R)-3-羟基丁酸酯-co-(R)-3-羟基戊酸酯)(77%丁酸酯)复合电阻器。一对对映体中的每种对映体在手性检测器上产生明显不同的相对差分电阻变化，而一组对映体中的两种对映体在非手性炭黑-聚(乙烯-co-醋酸乙烯酯)(82%乙烯)检测器上产生相同的信号。
