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Polypyrrole Copolymer Disclosure Number: IPCOM000067730D
Original Publication Date: 1979-Sep-01
Included in the Prior Art Database: 2005-Feb-20

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Diaz, AF Kanazawa, KK Street, GB [+details]


Polymer films having room temperature conductivities in the range from 10 to 100 (ohm-cm)/-1/ are known to be formed by the electrochemical oxidation of pyrrole on platinum. This simple one-step process yields non-toxic films which are flexible and stable. By operating outside of optimum growth conditions, it is possible to grow films with degraded conductivities down to perhaps 0.1 (ohm-cm)/-1/. However, the degrading of the conductivity in this manner has been observed to be accompanied by serious deleterious effects on film uniformity, resulting in poor flexibility and strength. We have now found a way to permit the forming of films having a range of conductivities ranging from 10/-3/ to over 10 (ohm-cm)/-1/, while maintaining film uniformity.