The electrochemical behavior of sanguinarine, a quaternary benzophenanthridine glycoside alkaloid with antimicrobial, anti-inflammatory, antioxidant and/or immune-stimulatory activities, was studied at a glassy carbon electrode using cyclic, differential pulse, and square wave voltammetry. The oxidation of sanguinarine is a quasireversible, diffusion-controlled process and occurred in a cascade...

The mechanism of electrochemical oxidation of morin has been studied using cyclic, differential pulse and squarewave voltammetry techniques in aqueous electrolyte with solid, insoluble morin hydrate mechanically transferred to a glassy carbon electrode surface, over a wide pH range. The oxidation mechanism proceeds in sequential steps, related with the hydroxyl groups in the three aromatic ring...

A single-phase (Ni,Pt)Al coating was removed by soft chemical stripping method successfully after preceding oxidation at 1100 °C for 300 h, and a fresh one refurbished subsequently. Oxidation behaviour of the studied in comparison with virgin °C. The results show that exhibited superior isothermal cyclic resistance than terms rate surface rumpling. effects roughness residual elements on rate, r...

surface oxidized carbon vulcane xc-72 is prepared as catalyst support and platinumnanoparticles are chemically anchored onto the modified surface. the nanoparticles of pt weresynthesized by reduction of h2ptcl6 with sodium borohydride in a 5.5 m buffer solution ofsodium citrate; the complexation of citrate with metal ions is beneficial to the formation ofnanoparticles. the electro-oxidation of ...

This Letter describes the design of a self-assembled monolayer of alkanethiolates on gold that can releaseattachedgroupswhenanelectrical potential is applied to thegold. Thedesign isbasedonmonolayers that present a catechol orthoformate group that undergoes an irreversible two-electron oxidation with simultaneous release of the orthoformate substituent. Cyclic voltammograms (0.15 M NaCl, pH 7.4...

The electrochemical properties of the (PCP)Rh(H2) (1-H2, PCP 1⁄4 k-C6H3e2,6-(CH2P(Bu2)) complex was examined by cyclic voltammetry in acetonitrile (MeCN), dimethylsulfoxide (DMSO) and 1,2difluorobenzene (1,2-DFB). Upon oxidation in weakly or non-coordinating media such as 0.05 M NaBAr24 in 1,2-difluorobenzene, simple one electron oxidation to [(PCP)RhII(H2)]þ is observed. Conversely, in coordin...

Catalytic oxidation of benzylic C-H bonds could be efficiently realized using IBS as a catalyst which was generated in situ from the oxidation of sodium 2-iodobenzenesulfonate (1b) by Oxone in the presence of a phase-transfer catalyst, tetra-n-butylammonium hydrogen sulfate, in anhydrous acetonitrile at 60 °C. Various alkylbenzenes, including toluenes and ethylbenzenes, several oxygen-containin...

To understand the charge transport ability of the metal coordinated cyclobutadiene, a series of cyclobutadiene cobalt cyclopentadiene (CbCoCp) omplexes containing electrochemically polymerizable thiophene units were synthesized. The complexes were electrochemically polymerized nd the resulting polymers were characterized by cyclic voltammetry, in situ conductivity and UV–vis spectroelectrochemi...