A Study on Mechanism of Photochemical Reaction of New Photosensitizer-Sulfonated Aluminum Phthalocyanine

Abstract

Abstract: The photochemical reaction of sulfonated aluminum phthalocyanine (A1SPC) was studied by ESR spectrometry. By using TMHP as a probe, the intermediates of A1SPC photochemical reaction were detected according to the ESR signal of nitroxyl free radical. It was shown that the formation ofthe nitroxyl free radical--the photooxide of TMHP depends on the presence of oxygen. The results,that the ESR signal is enhanced by deuterated water(D₂O), inhibited completely by β-carotene and partially inhibited by cytochrome Cand superoxide dismutase(SOD), show that the singlet oxygen (¹O₂) is produced and is the main intermediate product.

Key words: Photosensitizer, Photochemical reaction, Inhibitor

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Chen Shi-ming, Chen Ji-yao, Lu Ya-meng, Cai Huai-xin . A Study on Mechanism of Photochemical Reaction of New Photosensitizer-Sulfonated Aluminum Phthalocyanine[J]. Chem. J. Chinese Universities, 1991, 12(2): 227.

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A Study on Mechanism of Photochemical Reaction of New Photosensitizer-Sulfonated Aluminum Phthalocyanine

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