Raman imaging and photodegradation study of phthalocyanine containing microcapsules and coated particles

Daniil N. Bratashov, Admir Masic, Alexey M. Yashchenok, Matthieu F. Bedard, Olga A. Inozemtseva, Dmitry A. Gorin, Tamara Basova, Torsten K. Sievers, Gleb B. Sukhorukov, Mathias Winterhalter, Helmuth Möhwald, Andre G. Skirtach

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    15 Citations (Scopus)

    Abstract

    We present the results of using Raman molecular imaging and atomic force microscopy (AFM) investigation of the composition, stability, and photodegradation of polyelectrolyte multilayer microcapsules and coated microparticles containing copper-phthalocyanine and iron-phthalocyanine. The influence of laser light on degradation of these phthalocyanine dyes embedded in the walls of polyelectrolyte multilayer capsules and shells of microparticles was studied by both AFM and Raman molecular imaging, but only the latter technique gave information on dynamics of photodegradation. Raman peak assignment was performed according to theoretical calculations. The degradation rate of phthalocyanine dyes is estimated from Raman signal measurements and a model is proposed to account for the degradation rate. Practical applications of our approach are outlined.

    Original languageEnglish
    Pages (from-to)1901-1907
    Number of pages7
    JournalJournal of Raman Spectroscopy
    Volume42
    Issue number10
    DOIs
    Publication statusPublished - Oct 2011

    Keywords

    • copper-phthalocyanine
    • degradation
    • iron-phthalocyanine
    • microcapsules
    • stability

    ASJC Scopus subject areas

    • Spectroscopy
    • Materials Science(all)

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  • Cite this

    Bratashov, D. N., Masic, A., Yashchenok, A. M., Bedard, M. F., Inozemtseva, O. A., Gorin, D. A., Basova, T., Sievers, T. K., Sukhorukov, G. B., Winterhalter, M., Möhwald, H., & Skirtach, A. G. (2011). Raman imaging and photodegradation study of phthalocyanine containing microcapsules and coated particles. Journal of Raman Spectroscopy, 42(10), 1901-1907. https://doi.org/10.1002/jrs.2938