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Citation: Yun Qin, Wang Cuiying, Yan Zuokun. THE FORMATION OF SINGLET OXYGEN AND THE DIFFERENT STATE OF CHLOROPHYLL A IN VITRO[J]. Chinese Journal of Applied Chemistry, ;1985, 2(4): 79-82. shu

THE FORMATION OF SINGLET OXYGEN AND THE DIFFERENT STATE OF CHLOROPHYLL A IN VITRO

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 4 December 1984
Available Online: 5 April 1985

In this paper the correlation between different structure state of chlorophyll a (Chl a) in vitro and the amounts of singlet oxygen formed has been investigated, used as a photosensitizer. Chl a of different structure state in vitro showed different ability to excite triplet molecular oxygen into singlet form. 1, 3, 5-Triphenylformazan (TF) and 1, 3-diphenyl-5-p-methoxyphenyl formazan (TF-OCH₃) was used as the quencher for singlet oxygen and phenol as indicator for oxidation products. Irradiation of the mixed system (Chl a+TF/TF-OCH₃+solv.) was carried out with a He-Ne laser (6328Å). It was found that phenol had the highest relative yield in alcohol, medium in CCl₄ and the lowest in C₆H₁₄. The results were considered to be related to the difference of structure state of Chl a in solvents of different polarity.
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