Single-electron transfer from NADH analogues to singlet oxygen.
Single-electron transfer from NADH analogues to singlet oxygen.
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DOI：
10.1016/0005-2728(81)90208-5
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发表时间：
1981-08
期刊：
影响因子：
--
通讯作者：
G. Peters;M.A.J. Rodgers
中科院分区：
文献类型：
--
作者：
G. Peters;M.A.J. Rodgers
激光闪光光解技术已经获得了尼古丁、烟酰胺腺嘌呤二核苷酸（氧化和还原形式）以及还原形式的烟酰胺单核苷酸、烟酰胺腺嘌呤二核苷酸磷酸和烟酰胺次黄嘌呤二核苷酸对O2的物理和反应性猝灭模式（1 Δ g）的速率常数。在最后四种化合物的情况下，动力学光谱提供了单电子转移到O2（1 Δ g）的证据。具体地说，生产的O 2被证明是明确的反应与1，4-苯醌。定量测定表明，在每种情况下，反应淬灭的程度接近60%。
Laser flash photolysis techniques have yielded rate constants for physical and reactive quenching modes of O 2 (1 Δ g) by nicotine, nicotinamide adenine dinucleotide (oxidized and reduced forms) and the reduced forms of nicotinamide mononucleotide, nicotinamide adenine dinucleotide phosphate and nicotinamide hypoxanthine dinucleotide. In the case of the last four named compounds, kinetic spectroscopy furnished evidence for one-electron transfers to O 2 (1 Δ g). Specifically, production of O⨪ 2 was demonstrated unequivocally by reaction with 1, 4-benzoquinone. Quantitative determinations revealed the extent of reactive quenching to be near 60% in each case.