The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1988
Filed:
Aug. 19, 1985
Mrinal Thakur, Waltham, MA (US);
Other;
Abstract
This invention relates to the discovery of a novel class of intrinsically electrically conductive doped solid organic homopolymers having a conductivity when measured by the four point probe method at standard temperature conditions within the range of about 10.sup.-3 to 10 ohms.sup.-1 cm.sup.-1 developed by either treatment of the organic polymer surface with an electron donor or an electron acceptor dopant. The individual 'mer' unit of the useful polymeric class of homopolymers for the purposes of accepting the dopant treatment consist of homopolymers having the repeating general structure: ##STR1## wherein the useful members of this class require that the R.sub.1 and R.sub.2 substituents in the illustrated structured 'mer' are not both hydrogen substituents. However, in many instances of individual operative members of the class R.sub.1 and R.sub.2 may be otherwise a halogen or moities of a simple hydrocarbon structure, particularly methyl, when alkyl group extended chains, such as isopropyl, have been equated by theoretical comparison, likewise, it is also established that the simple phenyl (aromatic) group is also functionally useful. The 'mer' units of the polymer are isolated which is in contrast with prior art polymers which have been suggested or useful which contain conjugated bond structures.