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Photoinitiated Doping

IP.com Disclosure Number: IPCOM000051445D
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10

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Clarke, TC Krounbi, MT Lee, VY Street, GB [+details]


We have found a procedure for controllably enhancing the conductivity o selected areas of a polyacetylene film using a photochemical technique. Polyacetylene films can be dipped into solutions of triarylsulfonium or diaryliodonium (II) salts to impregnate the films with these materials. Methylene chloride, acetone, and Ar(3)S/+/X/-/ Ar(2)I/+/X/-/. I II. have all proved to be convenient solvents for this purpose. We have used hexafluoroarsenate (X=AsF(6)/-/) and tetrafluoroborate (X=BF(4)/-/ salts, but any anion of a strong proton acid should be effective. After drying, the films were irradiated with a 450-watt medium pressure mercury lamp for periods of time ranging from 5 to 15 minutes.