MANUFACTURE OF CONDUCTIVE POLYPYRROLE BY REACTING PYRROLE WITH OXIDIZING AGENT/DOPANT

摘要

PURPOSE: To obtain a conductive polypyrrole having stable quality by polymerizing pyrrole through oxidation in a solution of an oxidizing agent/dopant obtained from a basic metal carboxylate and a sulfonic acid. ;CONSTITUTION: A basic metal carboxylate selected among basic ferric, cupric and cerium carboxylates such as basic iron acetate represented by the formula: [Fe₃O(O₂CCH₃)₆(H₂O)₃]⁺CH₃COO^- is reacted with a stoichiometric amount (say, 3 equivalents per Fe atom) of an alkyl or arylsulfonic acid (e.g. 2,4,5- trichlorobenzenesulfonic acid) at 40°C or below in a solvent such as methanol to prepare a solution of an oxidizing agent/dopant of the basic metal sulfonate. Pyrrole is added to this solution and polymerized through oxidation to obtain a conductive polypyrrole precipitate, and the oxidizing agent/dopant reagent is recovered.;COPYRIGHT: (C)1990,JPO