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Photogeneration of the free radicals and singlet oxygen by chrysophanol from rheum被引量：3
《Science China Chemistry》2004年第5期381-387,共7页RAO Jing1,2, XIE Jie1, ZHAO Jingquan1 & ZHU Teng2 1. Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China 2. University of Science and Technology Beijing, Beijing 10083, China 
This work was supported by the National Natural Science Foundation of China(Grant No.20273079).
In the current work, chryosphanol (MHAQ) was isolated and purified from rheum, and the photosensitization activities were studied. In nitrogen-saturated DMSO solution, irradia- tion of chryosphanol (MHAQ) with visible...
关键词：chrysophanol  ESR  SEMIQUINONE RADICAL anions  superoxide RADICAL anions  hydroxyl radical  singlet oxygen. 
Photochemistry of hypocrellin derivatives under anaerobic conditions被引量：2
《Chinese Science Bulletin》2000年第7期597-603,共7页Yuying He An Jingyi Lijin Jiang 
To improve the red absorption and solubility of hypocrellin, we have synthesized a series of hypocrellin B derivatives. The pnotochemistry of these new compounds in anaerobic media has been investigated by using elect...
关键词：HYPOCRELLIN B DERIVATIVES SEMIQUINONE anion radical HYDROQUINONE electron PARAMAGNETIC resonance (EPR) spectrophotometry. 
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