Hydrogen-transfer reactions from phenols to TEMPO prefluorescent probes in micellar systems
Hydrogen-transfer reactions from phenols to TEMPO prefluorescent probes in micellar systems
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DOI：
10.1021/ol800446c
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发表时间：
2008-06-05
期刊：
影响因子：
5.2
通讯作者：
Aspee, Alexis
中科院分区：
文献类型：
--
作者：
Aliaga, Carolina;Juarez-Ruiz, Juan M.;Aspee, Alexis
氮氧自由基预荧光探针已被用来评估抗氧化剂在胶束体系中的局部反应性。已经定义了直接反映抗氧化剂疏水性与氮氧自由基反应相关性的表观速率常数。从甲醇到胶束介质中，槲皮素的该参数急剧增加：SDS和Triton X100胶束分别增强90和230倍。这是反应物在胶束中有利分配的明显结果。
A nitroxide prefluorescent probe has been used to evaluate local reactivity of antioxidants in micellar systems. An apparent rate constant that directly reflects the relevance of antioxidant hydrophobicity on the reaction toward nitroxide radicals has been defined. Dramatic increases in this parameter for quercetin are shown on moving from methanol to micellar media: 90 and 230 fold enhancements for SDS and Triton X100 micelles, respectively. This is a clear consequence of the favorable partition of reactants in the micelles.