Temperature-dependent gel-type ionic liquid compounds based on vanadium-substituted polyoxometalates with Keggin structure
作者： Tianpei Huang , Zhirong Xie , Qingyin Wu , Wenfu Yan
DOI: 10.1039/C5DT05055C
关键词:
摘要: A series of temperature-dependent gel-type ionic liquid compounds have been synthesized from 1-(3-sulfonic group) propyl-3-methyl imidazolium (abbreviated as MIMPS) and three vanadium-substituted heteropoly acids H5SiW11VO40, H5SiMo11VO40 H7SiW9V3O40. The designed polyoxometalate liquids (POM-ILs) demonstrated a tendency to exhibit layered structure. Moreover, they can undergo phase transformation viscous gel-state liquid-state below 100 °C, conductivity up 10(-3) S cm(-1) was observed at 120 °C. Cyclic voltammetry carried out study their electrochemical properties in organic solutions, it found that the oxidizability POM-ILs decreases order: [MIMPS]7SiW9V3O40 > [MIMPS]5SiMo11VO40 [MIMPS]5SiW11VO40. This result indicates redox behavior be tuned by changing chemical composition heteropolyanions.
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