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Porphyrin‐Containing Photosensitizer Obtained via Controlled Radical Polymerization
Author(s) -
Karewicz Anna,
Kłos Małgorzata,
Zapotoczny Szczepan,
Nowakowska Maria
Publication year - 2011
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201151012
Subject(s) - porphyrin , photochemistry , photosensitizer , copolymer , polymerization , amphiphile , chromophore , nitroxide mediated radical polymerization , chemistry , radical polymerization , polymer , aqueous solution , polymer chemistry , pyrene , materials science , organic chemistry
Summary: Block amphiphilic copolymer, poly(sodium styrenesulfonate‐block‐5‐(4‐acryloyloxyphenyl)‐10,15,20‐tritolylporphyrin) (PSSS‐block‐Po) was synthesized by nitroxide‐mediated controlled radical polymerization. The polymer is soluble in water and can absorb light in the visible region. The absorbed energy migrates between the porphyrin chromophores. The polymer chains form nanospheres in aqueous solution. Their interiors are highly hydrophobic and can effectively solubilize the large hydrophobic molecules of the various organic compounds (pyrene, azulene, rubrene). The polymer photosensitizes oxidation of organic compounds via photoinduced electron transfer and/or via formation of singlet oxygen. The effect of the architecture, chain properties and Po content on the photochemical properties of the porphyrin‐containing photosensitizers was also discussed.