Redox-modified silicate films: anthraquinone- and Prussian-blue-modified sol-gel electrodes

Subramanian Bharathi; Zhibin Wu; Ovadia Lev

doi:10.1117/12.284117

2 October 1997 Redox-modified silicate films: anthraquinone- and Prussian-blue-modified sol-gel electrodes

Subramanian Bharathi, Zhibin Wu, Ovadia Lev

Proceedings Volume 3136, Sol-Gel Optics IV; (1997) https://doi.org/10.1117/12.284117
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Two types of sol-gel derived redox modified electrodes are introduced. Anthraquinone modified silicate films were produced from 1,5-di-[(3- trimethoxysilyl)propylamino)anthraquinone derived sol by dip- coating of ITO coated microscope slides. The monomer was synthesized from commercially available 3- aminopopyltrimethoxysilane and 1,5-dichloroanthraquinone. Prussian blue modified electrodes were produced by cycling the potential of a preformed, porous Fe²⁺ doped silicate film coated on ITO substrate in a potassium ferricyanide solution. In both cases, cyclic voltammetry and electronic spectra of the films show that more than 100 layers of redox monomers are electrochemically active, which indicates long range charge transport by electron self exchange mechanism.

Citation Download Citation

Subramanian Bharathi, Zhibin Wu, and Ovadia Lev "Redox-modified silicate films: anthraquinone- and Prussian-blue-modified sol-gel electrodes", Proc. SPIE 3136, Sol-Gel Optics IV, (2 October 1997); https://doi.org/10.1117/12.284117

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