Spectrophotometric determination of manganese(II) with tetrasodium 25,26,27,28-tetrahydroxycalix(4)arene-5,11,17,23-tetrasulfonate.

展弘, 山本; 正志, 西田; 烈, 吉田; 文雄, 相良; 景平, 上野; 大道, 石井; 征治, 新海

doi:10.2116/bunsekikagaku.43.45

Cited by 6 publications

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“…To determine the corresponding number of layers of pSC6 attached to the electrode surface, an estimation of the molecular area is necessary. We have assumed that pSC6 has lost at least nine protons in our experimental conditions and that therefore the resulting pSC6 n - ( n > 8) does not contain the intramolecular hydrogen bonds that contribute to the double partial cone conformation of pSC6. − It can therefore be assumed that pSC6 n - ( n > 8) has a flattened conformation, as suggested for pSC6 6- .…”

Section: Resultsmentioning

confidence: 92%

“…The binding ability of these compounds toward uranyl and ammonium cations, as well as with ferrocene and cobalticinium derivatives, has been investigated. Analytical applications of the sulfonated calixarenes such as for spectroscopic determinations of metal species have been reported. − Various calixarene derivatives have been investigated for electroanalytical applications, including self-assembled monolayers of a thiolated calixdiquinone and conducting polymer films of thiophene-derivatized calixarenes − …”

Section: Introductionmentioning

confidence: 99%

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Interfacial Behavior of p-Hexasulfonato-calix[6]arene at Glassy Carbon Electrodes in Alkaline Aqueous Solution Studied by Voltammetric Methods

Pailleret

Arrigan

2002

Langmuir

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The water soluble calixarene p-hexasulfonato-calix[6]arene (pSC6) was subjected to voltammetric oxidation studies in alkaline aqueous solution (pH 13) at glassy carbon (GC) working electrodes. Cyclic voltammetry revealed that the oxidation of pSC6 resulted in a narrower and more intense peak as the potential scan rate was decreased. This suggested a process whereby attachment of pSC6 to the electrode surface occurred during the time frame from initial application of potential to commencement of oxidation, in effect a potential-and/or time-controlled attachment process. Further investigations confirmed this behavior. Adsorptive voltammetry (AdV) studies at GC electrodes revealed a response attributed to the oxidation of pSC6 accumulated at the electrode surface. The intensity and behavior of this response were a function of the accumulation potential, the accumulation time, the scan rate, and the concentration of pSC6. The surface attachment process is discussed in terms of the applied potential with respect to the potential of zero charge and multilayer deposition of pSC6 on the surface.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Interfacial Behavior of p-Hexasulfonato-calix[6]arene at Glassy Carbon Electrodes in Alkaline Aqueous Solution Studied by Voltammetric Methods

Pailleret

Arrigan

2002

Langmuir

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Chemical synthesis of hollow sea urchin like nanostructured polypyrrole particles through a core–shell redox mechanism using a MnO2 powder as oxidizing agent and sacrificial nanostructured template

et al. 2013

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Chemical synthesis of hollow sea urchin like nanostructured polypyrrole particles through a core-shell redox mechanism using a MnO2 powder as oxidizing agent and sacrificial nanostructured template. Synthetic Metals, Elsevier, 2013, 175, pp.192-199. 10.1016/j.synthmet.2013 1 Chemical synthesis of hollow sea urchin like nanostructured polypyrrole particles through a core-shell redox mechanism using a MnO 2 powder as oxidizing agent and sacrificial nanostructured template AbstractHollow sea urchin shaped nanostructured polypyrrole powder was successfully synthesized chemically in an acidic medium through a core-shell redox mechanism by using a nanostructured MnO 2 powder as oxidizing agent and sacrificial template simultaneously. The morphology and the structure of MnO 2 powder based reactant and produced polypyrrole powder were characterized respectively by using FEG-SEM, TEM, EDX and XRD techniques, which led us to demonstrate clearly the formation of hollow and open microparticles of polypyrrole with the presence of nanotubes on their surface. Nanostructured polypyrrole powder was found to be rather amorphous even though the shape of the polypyrrole particles was induced by the crystalline and nanostructured sea urchin shaped MnO 2 powder on which they grew. In addition, neither MnO 2 nor any manganese based species were found within the produced polypyrrole powder, which ruled out the production of composite materials. cations as reaction products isolated after filtration of the reaction medium.

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Liquid Chromatography: Theory and Methodology

et al. 1996

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Spectrophotometric determination of manganese(II) with tetrasodium 25,26,27,28-tetrahydroxycalix(4)arene-5,11,17,23-tetrasulfonate.

Cited by 6 publications

References 0 publications

Interfacial Behavior of p-Hexasulfonato-calix[6]arene at Glassy Carbon Electrodes in Alkaline Aqueous Solution Studied by Voltammetric Methods

Interfacial Behavior of p-Hexasulfonato-calix[6]arene at Glassy Carbon Electrodes in Alkaline Aqueous Solution Studied by Voltammetric Methods

Chemical synthesis of hollow sea urchin like nanostructured polypyrrole particles through a core–shell redox mechanism using a MnO2 powder as oxidizing agent and sacrificial nanostructured template

Liquid Chromatography: Theory and Methodology

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