Selective Vapor-Phase Deposition of Conductive Poly(3,4-ethylenedioxythiophene) Thin Films on Patterned FeCl_3 Formed by Microcontact Printing

摘要

We demonstrate a selective vapor-phase deposition of conductive poly(3,4-ethylenedioxythiophene) (PEDOT) thin films on patterned FeCl_3.The PEDOT thin films were grown on various substrates by using the vapor-phase polymerization of ethylenedioxythiophene (EDOT) with FeCl_3 catalytic layers at 325 K.The selective deposition of the PEDOT thin films using vapor-phase polymerization was accomplished with patterned FeCl_3 layers as templates.Microcontact printing was done to prepare patterned FeCl_3 on polyethyleneterephthalate (PET) substrates.The selective vapor-phase deposition is based on the fact that the PEDOT thin films are selectively deposited only on the regions exposing FeCl_3 of the PET substrates,because the EDOT monomer can be polymerized only in the presence of oxidants,such as FeCl_3,Fe(ClO_4),and iron(II) salts of organic acids/ inorganic acids containing organic radicals.