Synthesis and photodynamic potential of tetra- and octa-triethyleneoxysulfonyl substituted zinc phthalocyanines
| Autor: | Ayşe Gül Gürek, Mahmut Durmuş, Tania Khan, Vefa Ahsen, Nil Saydan, Heinrich Walt, Devrim Atilla, Angelika Rück, Tebello Nyokong |
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| Rok vydání: | 2007 |
| Předmět: |
Singlet oxygen
General Chemical Engineering General Physics and Astronomy chemistry.chemical_element General Chemistry Zinc Photochemistry Fluorescence Electron spectroscopy chemistry.chemical_compound chemistry Mass spectrum Phthalocyanine Spectroscopy Heteronuclear single quantum coherence spectroscopy |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 186:298-307 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2006.08.022 |
| Popis: | Synthesis of the water soluble zinc phthalocyanines (3, 4) obtained from the phthalonitriles substituted with oligo(ethyleneoxy)thia groups are described. The new compounds have been characterized by elemental analysis, IR, 1H and 13C NMR spectroscopy, including HSQC, HMBC and COSY bidimensional correlation techniques, electronic spectroscopy and mass spectra. The aggregation behaviour of the phthalocyanine compounds (3, 4) was investigated using UV–vis spectroscopy in dimethylsulphoxide. Photochemical and photophysical measurements were conducted on oligo(ethyleneoxy)thia appended zinc phthalocyanines. General trends are described for quantum yields of photodegredation, fluorescence yields, triplet lifetimes and triplet quantum yields as well as singlet oxygen quantum yields of these compounds. The phototoxicity against cancer cells of the new compounds was investigated during several in vitro experiments. The dye-sensitized photooxidation of 1,3-diphenylisobenzofurane via 1O2 was studied in dimethylsulphoxide. |
| Databáze: | OpenAIRE |
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