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Microstructured Tungsten Oxide: A Generic Desorption/Ionization Substrate for Mass Spectrometry

Authors

  • Xiujuan Yang,

    1. Department of Chemistry, University of Western Ontario, London ON, N6A 5B7 (Canada)
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  • X. K. Hu,

    1. Department of Chemistry, University of Western Ontario, London ON, N6A 5B7 (Canada)
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  • A. V. Loboda,

    1. Department of Chemistry, University of Western Ontario, London ON, N6A 5B7 (Canada)
    2. MDS-Analytical Technologies, 71 Four Valley Drive, Concord, ON, L4K 2V8 (Canada)
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  • R. H. Lipson

    Corresponding author
    1. Department of Chemistry, University of Western Ontario, London ON, N6A 5B7 (Canada)
    Current affiliation:
    1. Current Address: Department of Chemistry, University of Victoria P. O. Box 3065 Stn CSC, Victoria BC V8W 3V6 (Canada)
    • Department of Chemistry, University of Western Ontario, London ON, N6A 5B7 (Canada).
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Abstract

Microstructured tungsten oxide (WO3) fabricated by laser-irradiating tungsten foil in methanol has been developed as a substrate to soft-ionize small-molecular-weight compounds by surface-assisted laser desorption/ionization mass spectrometry. The material can be used to detect a wide variety of low molecular weight polar analytes in their protonated and deprotonated forms and non-polar species as radical cations.

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