Electrochemical Aspects of Asymmetric Phosphonium Ionic Liquids

Asymmetric aliphatic tetraalkyl phosphonium cations form room-temperature ionic liquids with iodide as an anion. Isobutyl-trihexyl phosphonium iodide shows the highest ionic conductivity at room temperature and it is enhanced by 3-methoxypropionitrile addition. A cyclovoltammetric study shows adequate redox behavior for nanocrystalline solar cells devices.