Chevron Research Company

Yoram S Papir

Albert H Schroeder

An electrochromic device which incorporates a reversibly color-changing organic polymer film as the display electrode. The display polymer film is capable of undergoing reversible oxidation and/or reduction to a charged, colored, conductive state. Upon reversing the charge, the polymer returns to its virgin color. The display films are comprised of linear fused heterocyclic ring systems, optionally with connecting units, or linear monocyclic ring systems and connecting units. The device requires low currents to operate and switch from the virgin state to the colored state. It also can optionally be operated to exhibit several colors.

Electrochromic devices

Tractable doped electroactive polymers, comprising recurring units of a fused nitrogen-containing unsaturated heterocyclic ring system, are fabricated from the virgin polymer by contacting the polymer with donor or acceptor conductivity modifier atoms or groups of atoms.

Electroactive polymers

Tractable doped electroactive polymers, comprising recurring units of a heterocyclic ring system and a sufficient concentration of charge compensating ionic dopants associated therewith.

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Emeryville, CA, United States of America

Yoram S Papir