| Photophysical and photosensitive properties of Elsinochrome A |
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| 作者姓名： | LI Cong HE Yanping OU Lingcheng TIAN Maojun YAO Zhikun GUO Mengbi |
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| 作者单位： | Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China |
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| 基金项目： | Acknowledgements The authors would like to thank the Key Laboratory of Photochemistry, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences for partial financial support. This research was supported by the National Natural Science Foundation of China （Grant No. 20262007 ） and the Natural Science Foundation of Yunnan Province （Grant No. 2000C0106M）. |
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| 摘 要： | 1 Introduction The perylenequinone compounds found in living creatures possess photodynamic activity to tumors and viruses and have drawn world-wide attention1―4]However, their clinical application may be restrained due to the shortage of the natural re…
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| 关 键 词： | 荧光光谱 感光性能 单态氧 吸收光谱 半醌自由基负离子 光敏剂 |
| 文章编号： | 10.1007/s11434-006-1050-3 |
| 收稿时间： | 2005-08-24 |
| 修稿时间： | 2005-08-242005-12-06 |
Photophysical and photosensitive properties of Elsinochrome A |
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| LI Cong HE Yanping OU Lingcheng TIAN Maojun YAO Zhikun GUO Mengbi.Photophysical and photosensitive properties of Elsinochrome A[J].Chinese Science Bulletin,2006,51(9):1050-1054. |
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| Authors: | Cong Li Yanping He Lingcheng Ou Maojun Tian Zhikun Yao Mengbi Guo |
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| Institution: | Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China;Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China;Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China;Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China;Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China;Center for Advanced Studies of Medicinal and Organic Chemistry,Chemical and Material Engineering Institute of Yunnan University,Kunming 650091, China |
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| Abstract: | In this paper, the photophysical and photosensitive properties of Elsinochrome A (EA), another member of perylenequinone photosensitizers derived via artificially biological synthesis, were stud- ied by taking hypocrellin A (HA) and hypocrellin B (HB) as the references. It was found that the quantum yield of singlet oxygen produced via the photosensi- tization of EA was 0.98 with HB (0.84) as a reference. Furthermore, the semiquinone anion could be pro- duced via photosensitization of EA in oxygen-free solution. Besides, taking advantage of nanosecond time-resolved spectral technique, the transient triplet absorption spectra and the lifetime of EA in cyclo- hexane were determined by the use of the ground- state depletion method. |
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| Keywords: | Elsinochrome A fluoresces spectra absorption spectra singlet oxygen semiquinone radical anion triplet-state |
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