Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1985-08-19
1987-01-06
Lovering, Richard D.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
524401, 524408, 524411, 524422, 4273935, 4274071, 252500, H01B 106
Patent
active
H00001830
ABSTRACT:
Poly (p-xylylidenes) having a high degree of polymerization in the form of films, foams or highly molecularly oriented films and fibers are chemically modified from insulators to conducting materials by exposure to either p- or n-type dopants. Poly (p-xylylidene) films are cast from aqueous solutions of a poly (p-xylene-.alpha.-dimethylsulfonium salt) polyelectrolyte. Processing of the films at elevated temperatures can yield both fibers and foams. Exposure of the poly (p-xylylidene) films, fibers or foams to p-type dopants result in an up to fifteen order of magnitude increase in conductivity, while n-type coping yields a nine order of magnitude increase. Doping of molecularly oriented films and fibers yields a highly anisotropic conductor with a greatly improved conductivity in the orientation direction.
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patent: 3706677 (1972-12-01), Wessling et al.
patent: 4528118 (1985-07-01), Murase et al.
"Poly-p-xylylidenes", Hoeg et al, J. Polymer Sci Pt B, 2(7), 697-701 (1964).
"Electrically conducting derivative of poly(p-phenylene vinylene)", Wnek et al, Polymer, 20(12), 1441-1443 (1979).
"Electrically Conducting Polymers: AsF.sub.5 -Doped Poly(phenylenevinylene) and Its Analogues", Gourley et al, Makromolecules 1984, 17, 1025-1033.
Capistran James D.
Gagnon David R.
Karasz Frank E.
Lenz Robert W.
Bricker Charles E.
Lovering Richard D.
Singer Donald J.
The United States of America as represented by the Secretary of
Thomas Jack
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