Interaction of anionic porphyrins with chitosan

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F04%3A00012816" target="_blank" >RIV/60461373:22330/04:00012816 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Interaction of anionic porphyrins with chitosan
Original language description
In this work we used polysaccharide chitosan, a polymer of partially N-acetylated ß(1,4)-linked 2-glucosamine, as a scaffold to bind porphyrins carrying anionic substituents. The interactions between chitosan and these porphyrins in aqueous solutions were analysed by electronic spectroscopy (absorption, fluorescence and ECD). Obtained results confirm the formation of highly ordered aggregates of porphyrins in the presence of chitosan. In appropriate conditions adding of anionic porphyrins to an aqueoussolution of chitosan led to the rapid formation of coloured fibrous precipitate that was isolated and analysed by resonance Raman (RR) spectroscopy. According to the RR spectra, the fibrils consist of highly aggregated macrocycles bound to chitosan macromolecules. Possible structure of these porphyrin assemblies was discussed.
Czech name
Interakce aniontových porfyrinů s chitosanem
Czech description
Interakce aniontových porfyrinů s chitosanem

Project
<a href="/en/project/GA203%2F02%2F0420" target="_blank" >GA203/02/0420: Tetrapyrrole Metallocomplexes for Modification of Triplex DNA Structures</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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