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Conducting Polythiophene Films

IP.com Disclosure Number: IPCOM000052035D
Original Publication Date: 1981-Apr-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Diaz, AF: AUTHOR

Abstract

Conducting polymeric films are prepared by the electro-oxidation of bithiophene on platinum. This simple one-step procedure produces films which are stable and employs nontoxic reagents. The films have conductivities in the range from 10/-1/ to 10/-3/ S/./cm/-1/ and are stable in conventional solvents at ambient conditions.

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Conducting Polythiophene Films

Conducting polymeric films are prepared by the electro-oxidation of bithiophene on platinum. This simple one-step procedure produces films which are stable and employs nontoxic reagents. The films have conductivities in the range from 10/-1/ to 10/-3/ S/./cm/-1/ and are stable in conventional solvents at ambient conditions.

In a typical preparation, the polymeric film is grown on a platinum surface using reagent grade acetonitrile. The best films are prepared when the electrolyte solution is acidic and the solution contains protic acids, such as sulfuric acid and arylsulfonic acids. The films can be prepared at constant potential, e.g., 1.1-1.3 V vs. a calomel reference electrode or by sweeping continuously over this potential range. In this fashion, films which are up to 40 mu thick are readily prepared.

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