Switchable window based on electrochromic polymers

Details Switchable window based on electrochromic polymers Switchable window based on electrochromic polymers

C - Chemistry, Metallurgy

07

D

C07D 495/04 (2006.01) C07D 491/044 (2006.01) C07F 7/08 (2006.01) G02F 1/15 (2006.01) G02F 1/153 (2006.01)

Patent

CA 2549705

Syntheses of a new blue EC monomer (ProDOT-MePro), and a new red EC monomer (ProDOP-Et2) are described. Two additional new types of EC monomers based on 3, 4-alkylenedioxythiophene include fluorinated EC monomers and an EC monomer including silicon. EC polymer devices having more than one different color EC polymer to enable additional colors to be provided using subtractive color mixing are also described, as well as EC polymer devices incorporating a logo, image, or text, are generally obscured when the device is colored, but become visible when the device is not colored. Also described are EC polymer devices that include a cathodic EC polymer layer, a gel electrolyte, a counter electrode, and a reference electrode. Working prototypes of such devices exhibit significant increases in the speed of transition of the EC device from a colored state to a transparent state.

L'invention porte sur la synthèse d'un nouveau monomère bleu électrochrome (EC) (ProDOT-MePro), et sur celle d'un nouveau monomère bleu électrochrome (ProDOP-Et2) ainsi que sur deux nouveaux types de monomères EC à base de 3, 4-alkylènedioxythiophène comprenant des monomères EC fluorés et des monomères EC siliciés. L'invention porte également sur des dispositifs à polymères EC utilisant plus d'un polymère EC différent et permettant d'obtenir des couleurs additionnelles par mélange soustractif de couleurs, et sur des dispositifs à polymères EC comportant un logo, une image ou du texte, et qui restent obscurs quand le dispositif est coloré, mais deviennent visibles quand le dispositif n'est pas coloré. L'invention porte en outre sur des dispositifs comportant une couche cathodique de polymère EC, un électrolyte de gel, une contre-électrode et une électrode de référence. Les prototypes de travail de ces dispositifs EC présentent un accroissement significatif de la vitesse de transition de l'état coloré à l'état transparent.

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