国家自然科学基金(20273079)

作品数:4被引量:13H指数:2
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相关作者:赵井泉饶静谢杰朱腾赵跃伟更多>>
相关机构:中国科学院北京科技大学中国地质大学(北京)更多>>
相关期刊:《Science China Chemistry》更多>>
相关主题:大黄酚超氧自由基单重态氧光敏化自由基更多>>
相关领域:理学更多>>
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大黄酚光敏化产生自由基和单重态氧被引量:8
《中国科学(B辑)》2004年第3期211-217,共7页饶静 谢杰 赵井泉 朱腾 
国家自然科学基金资助项目(批准号:20273079)
应用电子自旋共振技术研究由中草药大黄中分离纯化的大黄酚光敏化活性.在氮气饱和的二甲基亚砜中,用波长大于430nm可见光照射大黄酚产生半醌负离子自由基,且随着还原型辅酶的加入而增强,表明自由基来源于光敏剂的基态和激发态之间发生...
关键词:大黄酚 电子自旋共振 半醌负离子自由基 超氧自由基 羟基自由基 光敏剂 单重态氧 蒽醌类染料 
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. 
Fluorescence response of hypocrellin B to the environmental changes in a mimic biological membrane——liposome被引量:1
《Science China Chemistry》2004年第4期335-339,共5页JIN Xuanye1,2, ZHAO Yuewei1, XIE Jie1 & ZHAO Jingquan1 1. CAS Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Science, Beijing 100080, China 2. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China 
This work was supported by the National Natural Science Foundation of China(Grant No.20273079).
Liposome is well known as not only a drug-delivery system but also a simple model for biological membranes. It was reported that fluorescence properties of hypocrellins were changeable over some extreme pH values. In ...
关键词:MICROENVIRONMENT hypocrellin B liposome fluorescence 
竹红菌乙素对模拟生物膜-脂质体环境变化的荧光响应被引量:2
《中国科学(B辑)》2004年第2期94-98,共5页靳玄烨 赵跃伟 谢杰 赵井泉 
国家自然科学基金资助项目(批准号: 20273079)
脂质体不但可以作为药物传输体系,而且还作为一种模拟生物膜的简单模型.近期报道竹红菌素的荧光性质决定于其分子内质子转移,而分子内质子转移环境敏感特性决定其分子的环境敏感荧光性质,文中以脂质体为模拟生物膜研究竹红菌乙素(HB...
关键词:竹红菌乙素 模拟生物膜 脂质体 荧光性质 微环境 光动力活性 环境敏感 肿瘤 
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