Electrochemical analysis of nitric oxide with the emulsion in imitational of living body

模拟活体乳液一氧化氮的电化学分析

• 批准号: 14540556
• 负责人: CHEN Jingyuan
• 金额: $ 2.3万
• 依托单位: University of Fukui
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14540556/
• 关键词: emulsion; latex; ferrocene; oil-water interface; nitric oxide; electrochemical analysis; voltammetry; nanotechnology; ナノスケール

The electrochemical data of single oil droplet in water were got as a model of the electrode reaction of emulsion system in the last year.It was applied to the movement of the ions which are brought on the oil water interface of emulsion in this year. Those results were reported by 9 papers.The electrode reaction of redox species which exists in oil droplet occur when emulsion which oil droplets dispersed in water was applied potential.The reaction accompanied with transferal of the pair ion induces a coalescence of droplets at same time (paper 4).We observed the variance of contact angles between oil droplet and electrode when potential was applied by a video microscope, then discussed the interaction that from the alteration of interface force between oil droplets.In order to get a model of stable interface, we think about the polystyrene latex surface as a stable oil droplet surface. The latexes contained redox species, ferrocene, were synthesized (paper 3).Those reactions of latexe … More s show the partial charge transfer.So the redox species of latex was changed to polyaniline.It was different from the response in a film. The reaction of polyaniline coated latex became irreversible (paper 2).An oil I water interface was developed into the metal I solution interface.The distributed condition of suspension of silver nanoparticle and an electrode reaction of them were discussed (paper 5).In order to get the fundamental data of the phenomenon of nitric oxide which reacting in a film scale of the living body, the interface between phases was minutely described by nanometer scale (paper 6).The process of electrochemical generation of NO from N0_2 has been solved. First, N0_2 coordinated with iron porphyrin [Fe^<ll>(TMPyP)]^<4+> to yield a unstable intermediate, [Fe^<ll>(NO_2)(TMPyP)]^<3+> when applied negative potential -0.25 V vs.Ag|AgCl.Then it was changes to a stable coordinated Fe^<ll>(NO)(TMPyP)]^<4+> in a phosphate buffer solution (pH7.4). Finaly, NO can be' released from [Fe^<ll>(NO)(TMPyP)]^<4+> solution by applied a positive potential 0.8 V vs.Ag|AgCl.At present, electrochemical analysis of nitric oxide in oil | water interface and the emulsion basis of imitational of living body are operating. Less

在过去的一年中，我们得到了单个油滴在水中的电化学数据，并将其作为乳状液体系电极反应的模型，今年又将其应用于乳状液油水界面上离子的运动。本文报道了9篇文献的研究结果：油滴分散在水中形成的乳状液，在外加电压作用下，油滴中存在的氧化还原物种发生电极反应，反应伴随着离子对的迁移，同时引起油滴的聚结（文献4），我们用视频显微镜观察了外加电压时油滴与电极接触角的变化，为了得到稳定的油滴界面模型，我们将聚苯乙烯胶乳表面看作稳定的油滴表面，并将油滴表面看作稳定的油滴表面。合成了含氧化还原物种二茂铁的胶乳（论文3）。 ...更多信息 结果表明，乳胶膜的氧化还原物种转变为聚苯胺，这与乳胶膜中的反应不同。本文研究了聚苯胺包覆的胶乳的不可逆反应（论文2），将油-水界面发展为金属-溶液界面，讨论了银纳米粒子悬浮液的分布条件和它们的电极反应（论文5），为获得一氧化氮在生物体膜尺度上反应的基础数据，在纳米尺度上对相界面进行了精细的描述（论文6），解决了N0_2电化学生成NO的过程。在负电位-0.25Vvs. Ag时，NO_2与铁卟啉[Fe ^（TMPyP）]^&lt;4 +&gt;配位生成不稳定的中间体[Fe ^（NO_2）（TMPyP）]^&lt;3 +&gt;<ll>在pH7.4的磷酸盐缓冲溶液中，该配合物转变为稳定的Fe ^（NO）（TMPyP）]^&lt;4 +&gt;配合物。<ll>|<ll>最后，在[Fe ^（NO）（TMPyP）]^&lt;4 +&gt;溶液中施加0.8Vvs.Ag的正电位，可以释放NO<ll>目前，油中一氧化氮的电化学分析|水界面和模拟生物体的乳状液基础上进行操作。|少

项目成果

K.Aoki, P.Tasakorn, J.Chen: "Electrode reactions at nanometer-scaled oil|water|electrode interfaces"J.Electroanal.Chem.,. 542. 51-60 (2003)

K.Aoki、P.Tasakorn、J.Chen：“纳米级油|水|电极界面处的电极反应”J.Electroanal.Chem.,。

J.Chen, K.Aoki, C.Xu: "Suspensions of poly(vinylferrocene)-coated latex particles"J.Electroanal.Chem.. 546. 79-86 (2003)

J.Chen、K.Aoki、C.Xu：“聚(乙烯基二茂铁)涂覆的乳胶颗粒的悬浮液”J.Electroanal.Chem.. 546. 79-86 (2003)

J.Yoshida, J.Chen, K.Aoki: "Electrochemical coalescence of nitrobenzene|water emulsions"J.Electroanal.Chem.. 553. 117-124 (2003)

J.Yoshida、J.Chen、K.Aoki：“硝基苯|水乳液的电化学聚结”J.Electroanal.Chem.. 553. 117-124 (2003)

J.J.Watkins, J.Chen, H.S.White, H.D.Abruna, E.Maisonhaute, C.Amatore: "Zeptomole Voltammetric Detection and Electron-Transfer Rate Measurements Using Platinum Electrodes of Nanometer Dimensions"Anal.Chem.. 75. 3962-3971 (2003)

J.J.Watkins、J.Chen、H.S.White、H.D.Abruna、E.Maisonhaute、C.Amatore：“使用纳米尺寸铂电极进行 Zeptomole 伏安检测和电子转移率测量”Anal.Chem.. 75. 3962-3971 (2003

C.Xu, J.Chen, K.Aoki: "Partial charge transfer of polyvinylferrocene-coated latex particles adsorbed on pyrolytic graphite electrode"Electrochem.Commun.. 5. 506-510 (2003)

C.Xu，J.Chen，K.Aoki：“吸附在热解石墨电极上的聚乙烯基二茂铁涂覆的乳胶颗粒的部分电荷转移”Electrochem.Commun.. 5. 506-510 (2003)