Advanced Materials

Gas sensing properties of phthalocyanine langmuir—blodgett films

Authors

  • Dr. Sabarna Mukhopadhyay,

    Corresponding author
    1. School of Electrical and Information Engineering South Bank University 103 Borough Road, London SE10AA (UK)
    • School of Electrical and Information Engineering South Bank University 103 Borough Road, London SE10AA (UK)
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  • Dr. Cyril A. Hogarth

    1. School of Electrical and Information Engineering South Bank University 103 Borough Road, London SE10AA (UK)
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  • We thank the SERC, UK, for the fellowship award during the gas sensing work. We are grateful to Dr. M. Cook and Dr. S. Thorpe for their collaboration in providing the material and gas sensing apparatus used in our own studies.

Abstract

Ideal microsensors would be cost effetive, efficient, and stable, detect low concentrations of a certain gas in a working enviornment, and be able to operate in real time, i.e., monitor continuously. Among the compounds being ivestigated for development into microsensors are the phthalocyanines (Pcs), in particular in the form of thin films. The advantages and problems of Pc thin films are discussed, and the latest results for the detection of toluene and nitrogen oxides in air, including the response and recovery times, are presented.

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