Multilayer low current electro-optic assembly

An electro-optic assembly, comprising:

• a first substrate having a first and a second surface disposed on opposite sides thereof;
• a second substrate having a third and a fourth surface disposed on opposite sides thereof, the second substrate disposed in a substantially parallel spaced apart relationship with the first substrate such that the second and third surfaces face one another;
• a first conductive layer disposed on the second surface;
• a second conductive layer disposed on the third surface;
• a cathodic electro-optic film in contact with the second conductive layer and including a cathodic species;
• an anodic electro-optic film in contact with the first conductive layer, the anodic electro-optic film including a plurality of anodic species, the plurality of anodic species mixed at a molar ratio that is configured to generally maintain an a* value and a b* value of the electro-optic assembly both staying between −8 and 8 between a high-end transmission state and a fully darkened state caused by an applied voltage range;
• the plurality of anodic species includes a first anodic species and a second anodic species, wherein the first anodic species comprises the molar percentage between 80% and 60% of an aggregation of the first anodic species and the second anodic species;
• and
• an electrolyte medium disposed between the cathodic and anodic electro-optic films;
• and
• wherein the second anodic species is selected from a variety two group of substituted anodic species comprising substituted alkyl groups in the 2 and 7 or 2 and 8 position of a non-substituted phenazine compound or substituted butyl groups in the 2 and 7 or 2 and 8 position of a non-substituted phenazine compound, the variety two group of substituted anodic species selected from a group consisting:
• (a) 5,10-bis[(hydroxyalkyl dimethylammonio)alkyl] 2,7-bis(alkyl)-5,10-dihydrophenazine;
• (b) 5,10-bis(hydroxyalkyl)-2,7-bis(alkyl)-5,10-dihydrophenazine;
• (c) 5,10-bis[(hydroxyalkyl dimethylammonio)alkyl] 2,8-bis(alkyl)-5,10-dihydrophenazine;
• (d) 5,10-bis(hydroxyalkyl)-2,8-bis(alkyl)-5,10-dihydrophenazine;
• (e) 5,10-bis[4-(3-hydroxypropyl dimethylammonio)butyl] 2,7-di(tert-butyl)-5,10-dihydrophenazine;
• (f) 5,10-bis[4-(3-hydroxypropyl dimethylammonio)butyl] 2,8-di(tert-butyl)-5,10-dihydrophenazine;
• (g) 5,10-bis(6-hydroxyhexyl)-2,7-di(tert-butyl)-5,10-dihydrophenazine;
• and
• (h) 5,10-bis(6-hydroxyhexyl)-2,8-di(tert-butyl)-5,10-dihydrophenazine.