Patent ID: 8384981

Claim:
An electrochromic material, comprising: at least one compound represented by Chemical Formulas 1 to 3: wherein R 1 to R 3 are each independently selected from a single bond, a substituted or unsubstituted C 1 to C 30 alkylene group, a substituted or unsubstituted C 3 to C 30 cycloalkylene group, a substituted or unsubstituted C 6 to C 30 arylene group, a substituted or unsubstituted C 2 to C 30 heteroarylene group or a combination thereof, R′ is selected from a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 3 to C 30 cycloalkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 2 to C 30 heteroaryl group or a combination thereof, n is 0 or 1, L 1 to L 3 are each independently selected from a phosphonic acid group, a carboxylic acid group, a sulfonic acid group, a hydroxyl group or a combination thereof, X 1 to X 10 are each independently a halogen group, a halogen-containing group or a combination thereof, and Z 1 to Z 3 are each independently a radical of Chemical Formula A: wherein R 4 to R 13 are each independently selected from hydrogen, a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 3 to C 30 cycloalkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 2 to C 30 heteroaryl group, a halogen group, a halogen-containing group or a combination thereof, and * represents a point of attachment.