Electrochromic gel, method for producing the gel, method for controlling electronic printing and erasing on electrochromic gel, and stretchable display

An electrochromic gel comprising:

• an electrolyte-containing gel layer consisting only of the electrolyte-containing gel, wherein the electrolyte-containing gel comprises a polymer gel containing an organic solvent and an inorganic electrolyte dispersed into said polymer gel;
• and
• an organic-metallic hybrid polymer-containing layer which comprises an organic-metallic hybrid polymer contained in the electrolyte-containing gel,
• wherein the electrolyte-containing gel layer and the organic-metallic hybrid polymer-containing layer are laminated onto each other with the electrolyte-containing gel being shared by the electrolyte-containing gel layer and the organic-metallic hybrid polymer-containing layer, and
• wherein the electrochromic gel itself is stretchable,
• wherein the organic-metallic hybrid polymer is represented by the following formula (I):
• wherein M1 to MN denote a plurality of types of metal ions having different oxidation-reduction potential from each other, and N denotes an integer of 2 or more,
• wherein X1 to Xn denote, independently for each occurrence, a counter anion, and n denotes an integer of 2 or more,
• wherein R1 to RN denote, independently for each occurrence, a spacer including a carbon atom and a hydrogen atom or a spacer directly connecting two terpyridyl groups to each other, and N denotes an integer of 2 or more,
• wherein R11 to R1N, R21 to R2N, R31 to R3N, and R41 to R4N denote, independently for each occurrence, a hydrogen atom or a substituent group, and N denotes an integer of 2 or more, and
• wherein n1 to nN denote an integer of 2 or more showing independently a polymerization degree,
• wherein the organic-metallic hybrid polymer-containing layer has a thickness of less than 1 μm, and
• wherein the electrolyte-containing gel layer and the organic-metallic hybrid polymer-containing layer have a total thickness of not less than 10 μm and not more than 1 cm.