Does rose bengal triplet generate superoxide anion?
Does rose bengal triplet generate superoxide anion?
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DOI：
10.1021/ja9600800
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发表时间：
1996-04-03
影响因子：
15
通讯作者：
Kochevar, IE
中科院分区：
文献类型：
--
作者：
Lambert, CR;Kochevar, IE
孟加拉玫瑰(Rose Bengal，RB)是一种重要的氧化反应光敏剂，在生物和化学领域有着广泛的应用。1-4在水(0.75，50.86)和有机溶剂(例如，甲醇7中)中，通过从Rb三重态(3Rb*)能量转移生成单线态氧[O2(1Δg)]的量子产率很高。Rb的光敏作用通常完全归因于O2(1Δg)的产生。3，4氧猝灭3Rb*也被报道生成具有显著量子产率(φSO≈0.28，9)的超氧化物(O2·-)，反应1.形成超氧阴离子
Rose bengal (RB) is well-established as an important photosensitizer for oxidation reactions and has been used widely in biology and chemistry. 1-4 The quantum yield for singlet oxygen [O2 (1Δg)] formation by energy transfer from the RB triplet state (3RB*) is high in water (0.75, 5 0.86) and in organic solvents (eg, 0.76 in methanol7). Photosensitization by RB is frequently attributed exclusively to generation of O2 (1Δg). 3, 4 Quenching of 3RB* by oxygen has also been reported to generate superoxide (O2•-) with a significant quantum yield (φso≈ 0.28, 9) according to reaction 1. Superoxide anion formed