Electrochromic system

Details Electrochromic system Electrochromic system

C - Chemistry, Metallurgy

09

K

C09K 9/02 (2006.01) G02F 1/15 (2006.01)

Patent

CA 2246478

The electrochromic system proposed contains at least one oxidizable substance RED1 and at least one reducible substance OX2 each of which changes from a colourless or only slightly coloured form into a coloured form by virtue of an increase in the absorbance in the visible region of the spectrum. The system is characterized in that the conversion of the oxidizable form into the reducible form and vice versa occurs by cleavage or formation of a .sigma.- bond.

L'invention concerne un nouveau système électrochrome qui contient au moins une substance oxydable RED¿1? et au moins une substance réductible OX¿2? qui passent chacune, sous l'effet de l'augmentation de l'absorbance dans la zone visible du spectre, d'une forme faiblement colorée ou non colorée à une forme colorée. Ce système se caractérise en ce que la conversion réciproque de la forme oxydée et de la forme réductible intervient par rupture ou formation d'une liaison .sigma..

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