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1 Zeszyty Naukowe. Chemia / Politechnika Śląska

1 2001

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Photochemical properties of novel polyelectrolyte containing porphyrin chromophores

Karewicz A., Nowakowska M.

Zeszyty Naukowe. Chemia / Politechnika Śląska

2001

z. 146

307-310

Photochemical properties of the novel water soluble antenna polyelectrolyte: poly[sodium styrene sulfonate- co- (4-acryolyloxyphenyl)-10,15,20-tritolylporphyrin] (PSSS-Po) were studied. Solubilization of the various molecular probes such as pyrene or perylene in aqueous solution of the PSSS-Po proved that the polymer chain adopts a compact, pseudomicellar conformation under these conditions. The interior of the polymer pseudomicelle is significantly less polar than water. The effective quenching of fluorescence of polymeric porphyrin chromophores by sulfopropyl viologen (SPV) can be explained considering the possibility of electron transfer from the singlet excited state of Po to SPV. This has been supported by measuring the absorption spectrum of PSSS-Po / SPV system after selective irradiation of Po chromophores. The appearance of new bands, characteristic for SPV radical anion was observed.