Preparation and characterization of thin organosilicon films deposited on SPR chip

S. Szunerits, Sami Abou Rich, Y. Coffinier, M.-A. Languille, P. Supiot, R. Boukherroub

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The paper reports on the preparation and characterization of organosilicon thin polymer films deposited on glass slides coated with 5 nm adhesion layer of titanium and 50 nm of gold. The polymer was obtained by the decomposition of 1,1,3,3-tetramethyldisiloxane precursor (TMDSO) premixed with oxygen induced in a N plasma afterglow using remote plasma-enhanced chemical vapor deposition (PECVD) technique. The film thickness was controlled by laser interferometry and was 9 nm. The chemical stability of the gold substrate coated with the organosilicon polymer film (p-TMDSO) was studied in different acidic and basic solutions (pH 1-14). While the gold/polymer interface showed a high stability in acidic media, the film was almost completely removed in basic solutions. The resulting surfaces were characterized using atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), water contact angle measurements, cyclic voltammetry, and surface plasmon resonance (SPR).
    Original languageEnglish
    Pages (from-to)3910-3915
    Number of pages6
    JournalElectrochimica Acta
    Volume53
    Issue number11
    DOIs
    Publication statusPublished - 20 Apr 2008

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