Langmuir–blodgett films for electronic applications


  • Dr. Bernd Tieke

    1. Akzo Research Laboratories, Corporate Research Postfach, D-8753 Obernburg/Main (FRG)
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    • Studied chemistry at the University of Mainz, FRG. He was awarded his Ph.D. from the University of Freiburg, FRG, in 1978, for work on the polymerization of diacetylenes in Langmuir-Blodgett films. After a postdoc year with Prof. Bloor at Queen Mary College, University of London he returned to Freiburg to work with Prof. Wegner on new solid state polymerization reactions. In 1984 he moved to Ciba-Geigy in Fribourg. Switzerland, where he worked on electroactive polymers and in 1989 he changed to Akzo where he is leading a research group on new polymeric materials for coatings and membrane applications. Since his habilitation in Macro-molecular Chemistry at the University of Bayreuth (FRG) in 1987 he has been lecturing in Bayreuth and at the Swiss Federal Institute of Technology in Zürich, Switzerland. He has authored about 60 publications on new polymeric materials and thin films.


The present status of research on Langmuir-Blodgett (LB) films is outlined in relation to specific properties for electronic applications. The fundamentals of LB films are briefly described such as preparation techniques, film types, structure, and suitable compounds for functional amphiphiles, unconventional film-forming materials and polymers. Stress is laid on novel functional LB films exhibiting either photochemical and thermal reactivity, or electroactive properties such as electrical conduction, redox activity, electrochromism, nonlinear optical properties, and pyroelectric activity. The current status of LB films with regard to electronic applications is described, e.g. as photo- or e-beam resists, information storage systems, barrier layers, chemisensors, frequency converters and modulators, optical switches, guided wave structures or infrared sensors. Prospects for future molecular electronic devices are also briefly discussed.