Sensor for volatile materials and gases

摘要

A sensor capable of distinguishing between different optical isomers (enantiomers), which sensor comprises a pair of spaced-apart contacts ((14) and a semi-conductive polymer material (20) spanning the gap (15) between the contacts, which polymer material includes chiral sites. The chiral sites in the polymer material are preferably formed by incorporating an optically active counterion into the polymer material. for example by growing the polymer in the presence of such a counterion. e.g. camphor sulphonic acid. <IMAGE>