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Accession number;99A0228201
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| Title;EPR of Photosensitized Reaction of Quinone in Aqueous Micellar Solution of Nonionic Surfactant. |
| Author;
KAISE MASAHIRO
(National Inst. Materials and Chemical Res.)
TAKAHASHI AKIFUMI
(National Inst. Materials and Chemical Res.)
TOKUHASHI KAZUAKI
(National Inst. Materials and Chemical Res.)
KONDO SHIGEO
(National Inst. Materials and Chemical Res.)
ARAKAWA HIRONORI
(National Inst. Materials and Chemical Res.)
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Journal Title;Abstracts. Symposium on Biofunctional Chemistry
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Journal Code:L0836A
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ISSN:
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VOL.13th;NO.;PAGE.37-39(1998)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Photochemical study of hydroquinone and sulfonated derivative of hydroquinone has been previously done by us with an EPR and a time-resolved EPR under UV irradiation in aqueous media. Transient anion radicals of corresponding these quinone were observed which have to be created by molecular photoreduction: proton and electron release. Here we report another results with xanthone and anthraquinone which are known as a good triplet photo-sensityzer within the aqueous micellar solution of nonionic surfactant. Obtained EPR results gave us a fact of an interesting interaction between molecules only in the aqueous micellar solution. Spin polarized transient radical of respective quinone was detected by a time-resolved EPR: a sign of the polarization reflects photo-excited states of used sensitizer. (author abst.) |
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