Patent ID: 6594066
Filing Date: 2003-07-15
Classification: C07F,C09K,G02F

Abstract:
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 contained within a chamber positioned between the first and second substrates which comprises a material represented by the formula: â€ƒwherein R1-R10 are the same or different and at least three of R1-R10 are the same or different and comprise a straight or branched alkyl, aryl, alkaryl, or aralkyl group containing approximately 1 to approximately 40 carbon atom(s), and/or a silyl or siloxyl group containing approximately 1 to approximately 40 silicon atom(s), wherein the carbon or silicon atom(s) may be a linking group to, or part of, one or more functional groups comprising nitrites; nitro constituents; sulfoxides; sulfonates; phosphonium constituents; phosphonates; phosphonites; ammonium constituents; viologens, including bipyridinyl constituents; carbonyls, including carbonates, carbamates, ketones, esters, and amides; ethers, including polyethers; amines, including tertiary amines; alkenes; alkynes; and mixtures thereof; wherein any remainder of R1-R10 comprise H; and wherein M comprises a transition metal in any available oxidation state.