Electrochromic compounds, electrochromic compositions, electrochromic devices, and electrochromic light control devices

摘要

There is provided an electrochromic compound represented by the following general formula (1): Wherein R ¹ , R ² and R ³ are each independently a halogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted alkoxy group, and X ¹ and X ² are each independently a carbon atom or a nitrogen atom, Is an integer selected from 0 to 3, y and z are each independently an integer selected from 0 to 4, and at least one of L ¹ and L ² is bonded to the nitrogen atom of the pyridinium ring through a divalent substituent or directly Is a monovalent functional group.