Electrochromic system with coupled RED-OX system and special anions
First Claim
1. An electrochromic system comprising a weakly colored or colorless combination of at least one oxidizable substance RED1 that releases electrons at an anode and in so doing undergoes transition into a substance OX1 and at least one reducible substance OX2 that accepts electrons at a cathode and in so doing undergoes transition into a substance RED2, with the proviso that at least one of OX1 or RED2 is accompanied by an increase in the absorbance in the visible region of the spectrum and thereby becomes colored and the combination is restored to the weakly colored or colorless form after charge equalization, wherein(1) at least one of the substances RED1 is linked covalently to at least one of the substances OX2 by a bridge, and (2) at least one anion X−
- having (a) a molar mass greater than 200 g/mol and/or (b) a cagelike structure is present.
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Accused Products
Abstract
This invention relates to an electrochromic system containing at least one oxidizable substance RED1 and at least one reducible substance OX2 linked covalently by a bridge that are suitable for use in electrochromic devices.
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Citations
12 Claims
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1. An electrochromic system comprising a weakly colored or colorless combination of at least one oxidizable substance RED1 that releases electrons at an anode and in so doing undergoes transition into a substance OX1 and at least one reducible substance OX2 that accepts electrons at a cathode and in so doing undergoes transition into a substance RED2, with the proviso that at least one of OX1 or RED2 is accompanied by an increase in the absorbance in the visible region of the spectrum and thereby becomes colored and the combination is restored to the weakly colored or colorless form after charge equalization, wherein
(1) at least one of the substances RED1 is linked covalently to at least one of the substances OX2 by a bridge, and (2) at least one anion X− - having (a) a molar mass greater than 200 g/mol and/or (b) a cagelike structure is present.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
Specification