EPR STUDIES ON SINGLET OXYGEN PRODUCTION BY PORPHYRINS

Photochemistry and Photobiology - Tập 28 Số 2 - Trang 257-259 - 1978
Salvatore Cannistraro1, A. Van de Vorst1, Giulio Jori2
1*Department of Atomic & Molecular Physics, University of Liège, Belgium.
2†Istituto di Biologia Animate, Centro CNR Emocianine ed altre Metalloproteine, University of Padova, Italy

Tóm tắt

Abstract— EPR studies of the porphyrin‐sensitized photooxidation of 2, 2, 6,6‐tetramethyl‐piperidine to the nitroxide demonstrate that all the porphyrins examined are able to generate 1O2, although the efficiency of the photoprocess is dependent on the nature of the side chains. Incorporation of metal ions into the porphyrin molecule depresses or even inhibits the formation of 1O2. Comparison of these results with previously obtained kinetic data points out that the efficiency of porphyrins as photosensitizes is controlled by the lifetime of their lowest triplet state.

Từ khóa


Tài liệu tham khảo

Cannistraro S., 1978, Photochem. Photobioi

10.1016/0006-291X(77)91642-4

10.1111/j.1751-1097.1977.tb07358.x

Dougherty T. J., 1975, Cancer Res., 36, 2330

10.1126/science.179.4078.1131

10.1038/263442a0

10.1056/NEJM197005282822204

10.1021/ja00758a071

10.1111/j.1751-1097.1972.tb07343.x

10.1111/j.1749-6632.1975.tb41550.x

10.1111/j.1751-1097.1977.tb07443.x

10.1002/jlac.19697280115

10.1073/pnas.52.6.1439

Thông tin
Thông tin xuất bản

Photochemistry and Photobiology

Tập 28 Số 2

257-259

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