University of Connecticut

Michael A Invernale

Gregory Allen Sotzing

Disclosed is a method to color tune an electrochromic device by the use of a standard dye. By following the 'subtractive color mixing' theory and selecting the appropriate standard dye to compliment or accentuate the electrochromic material, tuning of the optical and colorimetric properties of the resulting electrochromic device can be achieved. The method can also be used to prepare electrochromic devices that will switch between two neutral colors.

Color tuning of electrochromic devices using an organic dye

Disclosed herein is a facile process for the formation of conjugated polymers inside or outside assembled solid-state devices. One process generally involves applying a voltage to a device comprising at least two electrodes, a combination of an electrolyte composition and a electroactive monomer disposed between the electrodes, and a potential source in electrical connection with the at least two electrodes; wherein the applying voltage polymerizes the electroactive monomer into a conjugated polymer. Also disclosed are electrochromic articles prepared from the process and solid-state devices comprising a composite of an electrolyte composition and a conjugated polymer.

Formation of conjugated polymers for solid-state devices

An electrochromic fiber or fabric is disclosed. The fiber or fabric includes a flexible, electrically conductive fiber, wherein the fiber comprises a non-electrically conductive organic polymer coated with an electrically conductive polymer; and; a layer comprising an electrochromic material disposed on and surrounding the flexible, electrically conductive fiber; wherein the electrically conductive polymer is PEDOT-PSS, poly(vinylpyridine), a poly(thiophene), a poly(pyrrole), a poly(aniline), a poly(acetylene), a poly(p-phenylenevinylene), a sulfonated polythieno[3,4-b]thiophene, polystyrenesulfonate, or a combination thereof. In one embodiment, the fiber or fabric is both flexible and elastic. The fibers and fabrics are of particular utility in electrochromic devices, particularly those which form or are a part of garments.

Flexible electrochromic devices, electrodes therefor, and methods of manufacture

An electrochromic fiber or fabric is disclosed. The fiber or fabric includes a flexible, electrically conductive fiber, and a layer comprising an electrochromic material disposed on and surrounding the flexible, electrically conductive fiber. In one embodiment, the fiber or fabric is both flexible and elastic. The fibers and fabrics are of particular utility in electrochromic devices, particularly those which form or are a part of garments.

Growing community of inventors

West Haven, CT, United States of America

Michael A Invernale