ELECTROCHROMIC COMPOUND, ELECTROCHROMIC COMPOSITION, AND DISPLAY ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide an electrochromic compound or an electrochromic composition having excellent coloring and discoloring stability and repetitive durability.

SOLUTION: The electrochromic compound is represented by structural formula (1). In structural formula (1), X1to X4and X6to X11each independently denote a hydrogen atom or a monovalent substitution group; X5denotes an aryl group which may have a substitution group or a heterocyclic group which may have a substitution group; R1and R2each independently denote a monovalent substitution group; L denotes an aromatic hydrocarbon group which may have a substitution group; n denotes an integer of 0 to 3 and A-and B-each independently denote a monovalent anion.

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