CPC G02F 1/15165 (2019.01) [B32B 17/10513 (2013.01); C07D 241/46 (2013.01); C07D 401/04 (2013.01); G02F 2001/15145 (2019.01)] | 15 Claims |
1. An electrochromic element comprising: a first electrode; a second electrode; and an electrochromic layer disposed between the first electrode and the second electrode, the electrochromic layer containing a solvent, an anodic electrochromic compound, and a cathodic electrochromic compound,
wherein the cathodic electrochromic compound has a substituent containing any one element selected from halogens, sulfur, boron, phosphorus, and silicon, and
the electrochromic element satisfies inequality (1):
GA+H2O−GA+OcOH≥35 inequality (1)
where, in inequality (1), GA+H2O represents a solvation free energy (kcal/mol) of an oxidized form of the anodic electrochromic compound in water, and GA+OcOH represents a solvation free energy (kcal/mol) of the oxidized form of the anodic electrochromic compound in octanol.
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