ULTRATHIN GRAPHITE OXIDE-POLYELECTROLYTE COMPOSITES PREPARED BY SELF-ASSEMBLY - TRANSITION BETWEEN CONDUCTIVE AND NONCONDUCTIVE STATES

Ultrathin films of graphite-polymer composites, which are required for sensors applications, are the target of the work reported here. The p reparation and characterization of ultrathin films composed of self-as sembled graphite oxide (GO) platelets and polyelectrolytes are describ ed, followed by the in situ reduction of GO to a conductive graphite-l ike state (G) by chemical and electrochemical methods. Particular atte ntion is paid to the non-conductive to conductive transition that occu rs on reduction and the behavior of incorporated CdS particles.