Patent ID: 8279513

Claim:
An electrochromic material represented by the Formula 3: wherein R 1 and R 2 are each independently selected from the group consisting of hydrogen, halogen, CN, OH, COOH, C 1 -C 20 alkyl, C 3 -C 20 cycloalkyl, C 2 -C 20 alkenyl, C 1 -C 20 alkoxy and C 5 -C 12 aryl, wherein each X is selected from the group consisting of halides, PF 6 − , BF 4 − , BH 4 − and CF 3 SO 3 − , and wherein R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of hydrogen, halogen, CN, OH, COOH, C 1 -C 20 alkyl, C 3 -C 20 cycloalkyl, C 2 -C 20 alkenyl, C 1 -C 20 alkoxy, C 5 -C 12 aryl, C 5 -C 12 heteroaryl, carbazolyl, fluorenyl and spirofluorenyl.