Organic vapors, organic polymers and electrical conductivity

Recent studies have shown that the electrical conductivity of certain organ ic polymer films change when the films are exposed to organic vapors. Here, results using polymers that conduct via redox hopping and conjugated polym ers such as polyaniline are emphasized. In these cases extremely large vapo r-induced increases in conductivity, up to a factor of 10(6), have been mea sured. These vapoconductivity effects result in part from morphological cha nges, especially plasticization. The results are of interest for the develo pment of sensors. Copyright (C) 2000 John Wiley & Sons, Ltd.