ELECTROCHROMIC COMPOUND, ELECTROCHROMIC COMPOSITION, ELECTROCHROMIC ELEMENT, AND ELECTROCHROMIC DIMMING ELEMENT

摘要

To provide an electrochromic compound represented by the following general formula (1) where X¹ and X² are each independently a carbon atom or a nitrogen atom, R¹, R² and R³ are each independently a halogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted alkoxy group, x is an integer selected from 0 through 3, y and z are each independently an integer selected from 0 through 4, and at least one of L¹ and L² is a monovalent functional group bonded to a nitrogen atom of a pyridinium ring directly, or via a divalent substituent.;