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Issue 3, 1996
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Synthesis and gas sensing properties of poly[tetra(pyrrol-1-yl)silane]

Abstract

Conducting polymers such as polypyrrole and polythiophene offer a new approach to the design of modified electrodes and sensors. In the current work, the electrochemical and chemical polymerisation of tetra(pyrrol-1-yl)silane is described. Resultant polymers with different anions have been characterised by electrochemical methods, XPS and microanalysis. Molecular geometry calculations suggest that both inter- and intra-molecular couplings are present in the film. Crosslinking of the polymeric matrix via β-linkages will result in a three-dimensional structure with a concomitant reduction in the degree of conjugation, accounting for the low film conductivity (σ ca. 10–6 S cm–1).

Preliminary results show that poly[tetra(pyrrol-l-yl)silane] is a promising material for the fabrication of gas sensors. It is unexpectedly sensitive to ammonia and trimethylamine gas when compared with polypyrrole and poly(N-methylpyrrole) prepared in a similar fashion.

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Article type: Paper
DOI: 10.1039/JM9960600295
Citation: J. Mater. Chem., 1996,6, 295-299
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    Synthesis and gas sensing properties of poly[tetra(pyrrol-1-yl)silane]

    P. Evans, N. M. Ratcliffe, J. R. Smith and S. A. Campbell, J. Mater. Chem., 1996, 6, 295
    DOI: 10.1039/JM9960600295

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