ABSTRACT
We are studying a new method, based on the chemical oxidative poly-condensation, enabling the simultaneous synthesis and deposition of insoluble conducting polymer thin films like : PPY, PANI, PBT and P3MT. We obtain the films layer-by-layer (LL) on insulator, semiconductor or conductor substrates by successive and alternate soakings of the substrates in a monomer solution and in an oxidant solution. The films are LL cyclically synthesized in the liquid diffusion layer adherent to the polymer (substrate) - solution interface. The solid or liquid monomer is supplied as thick film adherent to the interface and the oxidant solution is renewed after each cycle. So, the deposition of individual chains and the lengthening of the already deposited ones found at the interface are enhanced and the deposition of agglomerates of globules is depressed. In order to obtain highly conducting films and to avoid over-oxidation and covalent oxygen bonding different concentrations of FeCl3 - solvent oxidizing solutions are specially chosen. The deposition of oligomers is strongly depressed.
