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Proceedings Paper

Photoactive sol-gel biocoatings
Author(s): A. Ulatowska-Jarża; U. Bindig; H. Podbielska; I. Hołowacz; I. Gersonde; J. Beuthan; G. Müller; H. J. Eichler
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Paper Abstract

In this work we investigated the photoactive properties sol-gel biocoatings doped with Protoporphyrin IX (PP IX). It was demonstrated that PP IX entrapped in sol-gel preserves it's chemical activity and may have contact with the external environment. The chemical reactions with zinc cations and pyridine, as well as protonation, occurred quite fast. This indicates, that the interconnected porous network could be easily penetrated by relatively large molecules (e.g. mentioned by pyridine molecule). Further, we observed that PP IX molecules do not leave the pores. Structural changes caused by the addition of PP IX to the sol-gel matrix influence not only on the optical properties, but also on durability of the coatings. The altering of PP IX doped silica sol-gel coatings is quite slow.

Paper Details

Date Published: 20 April 2006
PDF: 9 pages
Proc. SPIE 6158, Lightmetry and Light and Optics in Biomedicine 2004, 61580U (20 April 2006); doi: 10.1117/12.676078
Show Author Affiliations
A. Ulatowska-Jarża, Wrocław Univ. of Technology (Poland)
U. Bindig, Laser-und Medizin-Technologie Berlin (Germany)
H. Podbielska, Wrocław Univ. of Technology (Poland)
Technical Univ. Berlin (Germany)
I. Hołowacz, Wrocław Univ. of Technology (Poland)
I. Gersonde, Charite Univ. Berlin (Germany)
J. Beuthan, Charite Univ. Berlin (Germany)
G. Müller, Charite Univ. Berlin (Germany)
H. J. Eichler, Laser-und Medizin-Technologie Berlin (Germany)
Technical Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 6158:
Lightmetry and Light and Optics in Biomedicine 2004
Katarzyna Kolacz; Jacek Sochacki, Editor(s)

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