Insights in the Architecture of Silicon-Based Plasma Polymers Using Partial Network Ethanolysis Combined with Electrospray Tandem Mass Spectrometry

Authors

  • Thierry Fouquet,

    1. Institut de Chimie Radicalaire ICR, Aix-Marseille Université – CNRS, UMR 7273, F-13397 Marseille, France
    2. Department of Advanced Materials and Structures, Public Research Centre Henri Tudor, 5 rue Bommel/ZAE Robert Steichen, L-4940 Hautcharage, Luxembourg
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  • Julien Petersen,

    1. Department of Advanced Materials and Structures, Public Research Centre Henri Tudor, 5 rue Bommel/ZAE Robert Steichen, L-4940 Hautcharage, Luxembourg
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  • Fabio Ziarelli,

    1. Aix-Marseille Université – CNRS, Fédération des Sciences Chimiques, Spectropole, FR1739, F-13397 Marseille, France
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  • Jérôme Bour,

    1. Department of Advanced Materials and Structures, Public Research Centre Henri Tudor, 5 rue Bommel/ZAE Robert Steichen, L-4940 Hautcharage, Luxembourg
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  • Valérie Toniazzo,

    1. Department of Advanced Materials and Structures, Public Research Centre Henri Tudor, 5 rue Bommel/ZAE Robert Steichen, L-4940 Hautcharage, Luxembourg
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  • David Ruch,

    1. Department of Advanced Materials and Structures, Public Research Centre Henri Tudor, 5 rue Bommel/ZAE Robert Steichen, L-4940 Hautcharage, Luxembourg
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  • Laurence Charles

    Corresponding author
    1. Institut de Chimie Radicalaire ICR, Aix-Marseille Université – CNRS, UMR 7273, F-13397 Marseille, France
    • Aix-Marseille Université – CNRS, Institut de Chimie Radicalaire ICR, UMR 7273, F-13397 Marseille, France.
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  • Dedicated to the memory of Dr. Detlef Schröder (1963–2012).

Abstract

Thin films obtained upon plasma polymerization of D4 and HMDSO precursors at atmospheric pressure are submitted to controlled ethanolysis to produce oligomers amenable to electrospray mass spectrometry. When using high resolution mass spectrometry to assess their elemental composition and tandem mass spectrometry to characterize their end-groups, a whole set of ethanolysis products is identified, from which the network connectivity in the original film can be reconstructed. Ethanolysis products of ppD4 and ppHMDSO exhibit the same structural features composed of linear and cross-linked PDMS moieties, the extent of cross-linking reflecting the inorganic character of the film. Oligomers originally embedded in the solid network and released as intact species upon its dissolution are also observed.

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