Electrochromic compounds and associated media and devices

  • US 7,428,091 B2
  • Filed: 11/10/2005
  • Issued: 09/23/2008
  • Est. Priority Date: 11/15/2004
  • Status: Active Grant
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First Claim
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1. An electrochromic device, comprising:

  • a first substantially transparent substrate having an electrically conductive material associated therewith;

    a second substrate having an electrically conductive material associated therewith; and

    an electrochromic medium comprising;

    at least one solvent;

    at least one anodic electroactive material;

    at least one cathodic electroactive material;

    wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and

    wherein at least one anodic electroactive material is represented by the following formula;

    embedded image wherein X comprises N—

    R10, O, or S;

    wherein R1-R10 are the same or different and comprise H, an alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, aryl, alkaryl, aralkyl, alkoxy, alkenyl, and/or alkynyl group containing approximately 1 to approximately 50 carbon atom(s) and/or a silyl or siloxyl group containing approximately 1 to approximately 50 silicon atom(s), wherein the carbon and/or silicon atom(s) can be a linking group to, or part of, a halogen, a N, O, and/or S containing moiety, and/or one or more functional groups comprising alcohols, esters, ammonium salts, phosphonium salts, and combinations thereof;

    with the proviso that at least one of R5 and R10 comprises an alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, aryl, alkaryl, aralkyl, alkoxy, alkenyl, and/or alkynyl group containing 4 to approximately 50 carbon atoms, wherein at least one of the carbon atoms can be a linking group to, or part of, a halogen, a N, O, and/or S containing moiety, and/or one or more functional groups comprising alcohols, esters, ammonium salts, phosphonium salts, and combinations thereof, and wherein at least one of R5 and R10 is void of any β

    hydrogen atoms.

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