| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrochromic compound and electrochromic composition which show sharp light absorption spectral characteristics in color development, and present yellow based, cyan based, and black based color developments, and to provide a display element using the electrochromic compound or electrochromic composition. <P>SOLUTION: The electrochromic compound is represented by formula (1). In the formula (1), X<SB>1</SB>, X<SB>2</SB>, X<SB>3</SB>, and X<SB>4</SB>each independently denote a hydrogen atom or a monovalent substituent, n denotes the integer of 1 to 6, Rs each independently denote a monovalent substituent, and Ar denotes a benzene ring which may have a substituent when n is from 1 to 5, and only a benzene ring when n is 6, and A<SP>-</SP>denotes a monovalent anion. <P>COPYRIGHT: (C)2011,JPO&INPIT |
