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  • 1995-1999  (2)
  • Key words Self-assembled monolayers  (1)
  • Polymer and Materials Science  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Blocking behavior of self-assembled monolayers on gold electrodes (1997)
    Springer
    Journal of solid state electrochemistry 1 (1997), S. 148-154 
    Details
    ISSN: 1433-0768
    Keywords: Key words Self-assembled monolayers ; Thiols ; Gold ; Electrode ; Adsorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Self-assembled monolayers (SAMs) with metal electrodes, especially thiols on gold, are the subject of this investigation because of the unique properties of SAM-modified surfaces. Normal alkanethiols are used to modify the surface of a conventional gold electrode to block certain ions such as Pb(II) and Cu(II) from the surface of the electrode. Normal alkanethiols are also used to study the SAM-gold interfacial adsorption-desorption behavior of the self-assembled monolayer. The effects of varying chain length of SAMs, varying concentration of the alkanethiol solutions, immersion time of the pure gold electrode in the SAM solution, and the stability of a SAM-modified gold electrode in fresh chloroform are investigated using the oxidation-reduction peaks of gold. Conditions that optimize the surface coverage and the uniformity of the SAMs have been determined. Normal alkanethiols proved to be a good insulator on the electrode surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100080050039
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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)
    Fulltext
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