P1.1.13 Thin Films of Substituted Polyanilines: Interactions with Biomolecular Systems

David Sarauli, Fred Lisdat, Chenggang Xu, Birgit Dietzel, Burkhard Schulz, Konstanze Stiba & Silke Leimk├╝hler
Differently substituted polyaniline copolymes are shown to provide interfaces for the communication with biosystems. The various substitutions of the aromatic ring are influencing the conductivity properties of the polymer immobilized on electrode surfaces, and lead to a modified interaction with proteins and/or enzyme molecules. It is shown that an analytical signal chain starting from the substrate sulfite in solution via the enzyme sulfite oxidase and the redox protein cyt c to the polymer can be...