Authors: A. Fandrich, J. Buller, E. Wischerhoff, A. Laschewsky, F. Lisdat
Affilation: Technical University of Applied Sciences Wildau, Germany
Pages: 239 - 242
Keywords: responsive film, biorecognition, electrochemistry, electroimmunoassay
Thermo-responsive polymers were synthesized and covalently bound to the surface of gold electrodes. Subsequently cyclic voltammetric and impedimetric measurements with so prepared working electrodes were realised in aqueous potassium ferro-/ferricyanide solutions at different temperatures. Significant changes of the temperature dependence of the voltammetric peak current and peak separation values at LCST clearly demonstrate the thermally induced phase transition. The above described electrode system is also investigated with regard to the possibility of triggering switching process due to a biorecognition reaction on the polymer surface.