The use of ultrathin polymer films as sensoactive layers in chemical
sensors has received great interest in recent years due to many
advantages such as the wide choice of polymeric system (polymer types
and/or combination, dopants in conducting polymers, etc), and the
possibility of tailoring the properties of these films in terms of
sensitivity and selectivity by an efficient control of the film
formation process [1]. Among the techniques used for ultrathin films
formation, self-assembly (SA) offers several advantages since the
substrate can take any form and size, deposition time is independent of
the substrate area, there are no requirements for additional equipments
and/or clean rooms, and a large quantity of materials can be assembled
into thin films [2-8].