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Chemical Preparation of Stable Conducting Pyrrole Polymer Films

IP.com Disclosure Number: IPCOM000053590D
Original Publication Date: 1981-Oct-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Diaz, AF Kanazawa, KK Salmon, M [+details]

Abstract

This article describes a procedure for the preparation of polymer films of pyrrole involving air oxidation. This procedure produces free standing polymer films of pyrrole and eliminates the requirement of the conducting surface. These films, 25-30 mu m thick, are formed on the surface of a quiet water-ethanol (2:1) solution containing 1M H(2)SO(4) and 1M pyrrole. These films are not soluble (nor are they altered) in common organic solvents, strong alkaline or acid solutions. These films are originally yellow and insulating, having a conductivity of 10/-11/ S cm/-1/. They darken with time as they become air-oxidized. These films are easily oxidized with common oxidants, such as Br(2) and I(2), to produce black films with conductivities up to 10/-2/ S cm/-1/.