Electrically conductive pyrrole polymers

Details Electrically conductive pyrrole polymers Electrically conductive pyrrole polymers

1983-04-18

1985-09-24

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

2041802, 252500, 548400, 548517, 548518, 548541, 548577, 548579, C08D 1300, C08F12606

Patent

active

045434026

ABSTRACT:
Organic polymers which are "hydroxyphenyl-substituted" and "ether-substituted" polypyrroles ("PP") linked through N-adjacent C atoms, are disclosed which are compactable, extrudable and are also electrical conductors. When such PPs are prepared by electrochemical deposition with an appropriate electrolyte, they are also soluble in commonly available solvents, provided at least one of the 3- or 4- positions of the pyrrole nucleus is substituted with a substituent having either a hydroxyphenyl, or an ether structure. By choice of the hydroxyphenyl and/or ether substituent on one of the substitutable positions (3- or 4-) of the pyrrole nucleus, or both, the PP may be tailored for use either as a semiconductor having a conductivity in the range from about 10.sup.-5 to about 10.sup.-2 S/cm, or a relatively good conductor having a conductivity in the range from about 10.sup.-2 to about 10.sup.2 S/cm. A method is disclosed for preparing an ether-substituted pyrrole comprising reacting a non-Michael acceptor selected from the group consisting of esters, ketones and nitriles having vinylene carbon atoms, with tosylmethylisocyanide, in the presence of a solvent, so as to form a hydroxyphenyl-substituted or an ether-substituted pyrrole directly without substituting the pyrrole ring in the 2- and 5- positions.

REFERENCES:
patent: 2810726 (1957-10-01), Howard
patent: 3070604 (1962-12-01), Drummond
patent: 3301918 (1967-01-01), Dereich

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