Show simple item record

dc.contributor.author吴宝璋
dc.contributor.author杨长通
dc.contributor.author吴辉煌
dc.date.accessioned2016-05-17T02:56:22Z
dc.date.available2016-05-17T02:56:22Z
dc.date.issued1999
dc.identifier.citation化学学报,1999,(9):45-49
dc.identifier.issn0567-7351
dc.identifier.otherHXXB199909005
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/107702
dc.description.abstract中位-四(对-磺基苯基)卟啉的铁、锰配合物(fETPPS和MnTPPS)用作nAdH氧化的催化剂,均相溶液中的反应动力学用紫外可见光谱测定.结果表明,在除氧的中性溶液中fETPPS和MnTPPS降低了nAdH在玻碳电极上氧化的过电位,过程用EC再生机理解释.在氧饱和的溶液中MTPPS起电子转移中介体的作用促进nAdH氧化,其还原态被O_2氧化而再生.测得fETPPS和nAdH反应的速率常数为3.3MOl--(-1)·l·S--(-1),而MnTPPS和nAdH反应的速率常数约为fETPPS的1/2.讨论了MTPPS作为nAdH仿生氧化催化剂的前景.
dc.description.abstractThe metalloporphrins FeTPPS and MnTPPS [ TPPS standing for meso-tetrkis ( p-sulfonatophenyl) porphyrin] , were used as the catalysts for NADH oxidation.The reaction kinetics in solution was measured by UV-vis spectroscopy.It was found that in neutral deoxygenated solution, the presence of FeTPPS or MnTPPS decreases the overpotential of NADH oxidation at a glassy carbon electrode, the processes are explained in terms of EC mechanism.In oxygen-saturated solution, MTPPS as an electron-transfer mediator accelerated NADH oxidation, and reduced MTPPS was regeneraed via chemical oxidation by O2 .The rate constant for the oxidation of NADH by FeTPPS was measured as 3.3mol-1·L·s-1, however, for MnTPPS the rate constant was about a half of that for FeTPPS.The prospects of using MTPPS as biomimitic catalysts for NADH oxidation are discussed .
dc.description.sponsorship国家自然科学基金(29233082);福建省自然科学基金资助课题
dc.language.isozh_CN
dc.subject金属卟啉
dc.subjectNADH氧化
dc.subject仿生催化
dc.subject动力学分析
dc.subjectmetalloporphrins
dc.subjectNADH oxidation
dc.subjectbiomimitic catalysis
dc.subjectkinetic analysis
dc.title金属卟啉MTPPS对NADH氧化的催化作用
dc.title.alternativeCatalytic Oxidation of Reduced Coenzyme NADH by Metalloporphrins MTPPS
dc.typeArticle


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record