Coupled electrochromic compounds with photostable dication oxidation states
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United States of America Patent
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Jun 19, 2001
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app pub date -
Jul 9, 1999
filing date -
Jul 9, 1999
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Abstract
Coupling of anodic electrochromic compounds by a covalent bond or a bridge link which provides for electronic communication between the coupled electrochromic compounds results in coupled electrochromic compounds which exhibit greater stability as well as electrochromic activity that differs from the monomeric electrochromic compounds. Extension of the absorption spectrum into the near-infrared region of the spectrum is frequently observed. The coupled electrochromic compounds are highly suitable for use in electrochromic media used to produce electrochromic devices.
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