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SM ISO690:2012 POTLOG, Tamara, SUMAN, Victor, POPUSHOI, Ana, LUNGU, Ion, MIMURA, Hidenori. Synthesis and Characterization of Functionalized Zinc Phthalocyanine-Natural Polymer Systems. In: Lecture Notes in Networks and Systems, Ed. 20, 27-29 septembrie 2023, Hamamatsu. Berlin: Springer Science and Business Media Deutschland GmbH, 2024, Vol. 939, pp. 29-35. ISBN 978-303154449-1. ISSN 23673370. DOI: https://doi.org/10.1007/978-3-031-54450-7_4 |
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Lecture Notes in Networks and Systems Vol. 939, 2024 |
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Simpozionul "20th International Conference on Global Research and Education" 20, Hamamatsu, Japonia, 27-29 septembrie 2023 | ||||||
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DOI:https://doi.org/10.1007/978-3-031-54450-7_4 | ||||||
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New photosensitizers based on tetracarboxy- and octacarboxy- ZnPc derivatives conjugated to natural polymers for photodynamic therapy (PDT) are proposed. The tetracarboxy- and octacarboxy- ZnPc powders prepared by the direct condensation and hydrolysis were conjugated to chitosan (Ch). The ZnPc(COOH)4 and ZnPc(COOH)8 powders were solubilized in DMSO:H2O mixture solvent, ratio 1:1 and then self-assembled with degraded chitosan solution. The resulting ZnPc(COOH)4/Ch and ZnPc(COOH)8/Ch solutions were used for the investigation of the some photophysics properties. The UV-Vis spectra of both solutions show Q broad bands red shifted in comparison with unsubstituted of ZnPc in DMSO solution. At the excitation of the ZnPc(COOH)4/Ch with 643…702 nm a single band structure centered at 710 nm was revealed. For the (ZnPc(COOH)8/Ch, at the excitation with 363 nm and 707 nm the band centered only at 480 nm was observed. The fluorescence decay of (ZnPc(COOH)8/Ch shows 2.04 ns and 9.54 ns lifetimes of excited states, while for ZnPc(COOH)4/Ch indicates 2.77 ns. |
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Cuvinte-cheie Chitosan solution, Functionalized, Octacarboxy, Photophysic property, Photophysics, property, Synthesis and characterizations, Tetracarboxy, Zinc phthalocyanines, ZnPc |
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