Photoinduced Intermolecular and Intramolecular Actions Between Phenothiazine and Porphyrin

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (7): 1131.

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Photoinduced Intermolecular and Intramolecular Actions Between Phenothiazine and Porphyrin

HE Xue-Zhong¹, ZHOU Ya-Lin², ZHANG Man-Hua², SHEN Tao ²

1. Department of Biological Science and Biotechnology, Tsinghua University, Beijing, 100084;
2. Institute of Photographic Chemistry, the Chinese Academy of Sciences, Beijing, 100101

Received:1998-07-14 Online:1999-07-24 Published:1999-07-24

Abstract

Abstract: Adyad of phenothiazine and porphyrin and their reference model compounds were synthesized. The intermolecular and intramolecular photoinduced singlet energy transfer and electron transfer were studied. The results indicated that the intermolecular ground state action between PorBu and PTZBu is negligible, the excited PTZBu partly transfer its singlet energy to PorBu. Exciting PorBu, the intermolecular electron transfer occurs with a rate 1.11×10¹⁰s^-1·mol^-1·L. For exciting PTZ moiety in dyad, due to PTZ′s lower Φ and smaller ε, it could not transfer its singlet energy to porphyrin. Exciting the porphyrin moiety could induce electron transfer from phenothiazine moiety to porphyrin moiety.

Key words: Phenothiazine and porphyrin dyad, Electron transfer, Energy transfer

CLC Number:

O757.32

TrendMD:

HE Xue-Zhong, ZHOU Ya-Lin, ZHANG Man-Hua, SHEN Tao  . Photoinduced Intermolecular and Intramolecular Actions Between Phenothiazine and Porphyrin[J]. Chem. J. Chinese Universities, 1999, 20(7): 1131.

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Photoinduced Intermolecular and Intramolecular Actions Between Phenothiazine and Porphyrin

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