超分子体系中醌类光还原的研究  

Studies on the Photoreduction of Quinones in Supramolecular System of Cyclodextrin

作　　者：韦寿莲[1] 邓光辉[2] 江云宝[3] 许金钩[3] 

机构地区：[1]肇庆学院轻化系,肇庆市526061 [2]广西民族学院化学化工系,南宁530006 [3]厦门大学化学系

出　　处：《分析科学学报》2002年第4期281-284,共4页Journal of Analytical Science

基　　金：国家自然科学基金 (No.2 9675 0 1 8);广西自然科学基金 (桂科自 991 2 0 0 1 )

摘　　要：本文报道了 9,1 0 -蒽醌 - 2 -磺酸 ( AQS)在β -环糊精 (β - CD)和甲基化β - CD超分子体系中的光还原反应。即使在无氢原子给予体 ( HAD)和不除氧的实验条件下 ,CD的加入都能导致光还原反应速度剧增。机理研究表明此现象主要由 CD的微环境引起 ,依赖于第二客体甲醇的浓度。甲醇既可与 AQS- CD形成三元包络物 ,又能导致In supramolecular systems of β cyclodextrin( β CD) and methylated β cyclodextrin, the photoreduction reactivity of 9,10 anthraquinone 2 sulfonate(AQS) was sharply enhanced even in the absence of a 'hydrogen atom donor'(HAD) and without deoxygenation. The photoreduction mechanism has been studied. It was found that the leading factor that determines the photoreduction rate in the present system is the microenvironmental effect of the CD cavity, depending on the concentration of methanol. It can not only form three component inclusion complex with CD and AQS, but also exclude AQS from CD AQS inclusion complex.

关 键 词：在位光还原荧光分析 超分子体系 环糊精 AQS 醌类物质 

分 类 号：O625.46[理学—有机化学] O657.3[理学—化学]