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  • 1
    Electronic Resource
    Electronic Resource
    The polymerization of dimethyldiallylammonium chloride by gamma irradiation as followed by 1H NMR (1988)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 26 (1988), S. 333-339 
    Details
    ISSN: 0887-6258
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1988.140260801
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electron transfer through an immunoglobulin layer via an immobilized redox mediator (1996)
    Weinheim : Wiley-Blackwell
    Electroanalysis 8 (1996), S. 143-146 
    Details
    ISSN: 1040-0397
    Keywords: Redox mediators ; Immunoglobulin G ; Polyvinyl ferrocene ; Butyl ferrocene ; lmmunosensor model ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: As a step towards a voltammetric immunoassay with antibodies directly attached onto the electrode surface, the mediated oxidation of a redox active label has been investigated with a model system. Butyl ferrocene served as a model for the mediator and was coimmobilized onto a glassy carbon electrode within a layer of bovine immunoglobulin G, which mimiked the antibody. An overlaid polyvinyl ferrocene layer was employed to simulate a ferrocene-tagged high molecular weight antigen bound to the immobilized antibodies. A mediated electron transfer could only be demonstrated with butyl ferrocene as mediator, whereas other compounds failed to support an electron transfer between the polyvinyl ferrocene layer and the electrode through the layer of immunoglobulin.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140080209
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Electrochemical determination of oxygen permeability of isolated stratum corneum membranes (1993)
    Weinheim : Wiley-Blackwell
    Electroanalysis 5 (1993), S. 641-645 
    Details
    ISSN: 1040-0397
    Keywords: Oxygen ; Permeability ; Membrane ; Skin ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mammalian stratum corneum is a thin, highly organized polymeric membrane which is relatively impermeable to water but permeable to some gases including oxygen. Isolated stratum corneum membranes from perinatal Sprague-Dawley rats were mounted under electrodes used to determine the rate of diffusion of oxygen through the membrane. These membranes were consistently found to be permeable to oxygen, which could be quantitatively determined at a gold electrode at -0.6 V (vs. a Ag/AgCl electrode). The stratum corneum membrane was found to be anisotropic, with greater oxygen permeability when the gas diffused toward the electrolyte from the side of the membrane which would be oriented toward the exterior of the animal than when it diffused in the opposite direction. There is also evidence of anatomic site heterogeneity in the permeability of the membranes.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140050803
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Blank response at glassy carbon electrodes in a flow injection system (1992)
    Weinheim : Wiley-Blackwell
    Electroanalysis 4 (1992), S. 33-40 
    Details
    ISSN: 1040-0397
    Keywords: Flow injection analysis ; amperometric detection ; glassy carbon electrode ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The blank response at glassy carbon electrodes in a flow injection system consists of a transient component and a steady state (residual current) component. The transient response is attributed to nonfaradaic current and faradaic current from the oxidation-reduction of electroactive surface functional groups on glassy carbon. The magnitude of the transient response was dependent on the potential applied to the electrode, temperature, ionic strength and pH of the injected sample solution, and independent of the flow rate. A linear relationship exists between the transient response and the difference in concentration of ionic species or pH between injected sample and the carrier. A differnce of 0.01 M ionic concentration or 0.04 pH unit between carrier and injected sample could change the transient charge by ca. 0.038 μC/cm2. The shape of the transient response due to pH difference at high positive potential indicates that some changes occur on glassy carbon surface in this potential region.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140040108
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    Paper (German National Licenses)
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