| Solvent effects on competitive intramolecular electron transfer and energy transfer in a covalently linked porphyrin-phthalocyanine heterodimer |
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| 作者姓名： | TIAN Hong-Jian ZHOU Qing-Fu SHEN Shu-Yin XU Hui-Jun Institute of Photographic Chemistry Chinese Academy of Sciences Beijing China |
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| 作者单位： | TIAN，Hong-Jian ZHOU，Qing-Fu SHEN，Shu-Yin XU，Hui-Jun Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | Photophysical properties of a porphyrin-phthalocyanine heterodimer covalently linked with a dipentoxy chain have been studied.Absorption spectra show that there is weak exciton coupling between the two chromophores in the ground state.Fluorescence spectra show that intramolecular energy transfer from porphyrin to phthalocyanine moiety occurs in competition with electron transfer.The efficiency of these two processes depends upon the mutual orientation of the two chromophores.The effect of solvent polarity on the intramolecular processes is also discussed.
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Solvent effects on competitive intramolecular electron transfer and energy transfer in a covalently linked porphyrin-phthalocyanine heterodimer |
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| TIAN,Hong-Jian ZHOU,Qing-Fu SHEN,Shu-Yin XU,Hui-Jun Institute of Photographic Chemistry,Chinese Academy of Sciences,Beijing ,China.Solvent effects on competitive intramolecular electron transfer and energy transfer in a covalently linked porphyrin-phthalocyanine heterodimer[J].Chinese Journal of Chemistry,1996,14(5):412-420. |
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| Authors: | TIAN Hong-Jian ZHOU Qing-Fu SHEN Shu-Yin XU Hui-Jun Institute of Photographic Chemistry Chinese Academy of Sciences Beijing China |
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| Institution: | TIAN,Hong-Jian ZHOU,Qing-Fu SHEN,Shu-Yin XU,Hui-Jun Institute of Photographic Chemistry,Chinese Academy of Sciences,Beijing 100101,China |
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| Abstract: | Photophysical properties of a porphyrin-phthalocyanine heterodimer covalently linked with a dipentoxy chain have been studied.Absorption spectra show that there is weak exciton coupling between the two chromophores in the ground state.Fluorescence spectra show that intramolecular energy transfer from porphyrin to phthalocyanine moiety occurs in competition with electron transfer.The efficiency of these two processes depends upon the mutual orientation of the two chromophores.The effect of solvent polarity on the intramolecular processes is also discussed. |
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| Keywords: | Solvent effects electron transfer energy transfer porphyrin phthaJocyanine |
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