Electrical properties of nanoscaled host/guest compounds

We report on the electrical properties of zeolites, molecular and nanoscaled guests in porous solids as well as of microporous semiconductors, which have been examined by means of impedance spectroscopy or related methods. Selected examples give an insight into charge transport phenomena and show how charge transport and relaxation can be affected by host/guest interactions. In this context, potential applications in chemical sensing and catalysis are introduced. (C) 2000 Elsevier Science B.V. All rights reserved.