Temperature-dependent gel-type ionic liquid compounds based on vanadium-substituted polyoxometalates with Keggin structure

被引：18
作者：
Huang, Tianpei [1 ]
Xie, Zhirong [1 ]
Wu, Qingyin [1 ]
Yan, Wenfu [2 ]
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
[2] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
来源：
DALTON TRANSACTIONS | 2016年 / 45卷 / 09期
基金：
中国国家自然科学基金;
关键词：
HETEROPOLY ACID; ELECTROCHEMICAL-BEHAVIOR; ROOM-TEMPERATURE; CONDUCTIVITY; ELECTROLYTE; COMPLEXES; GELATION; ESTERIFICATION; PERFORMANCE; COMPOSITES;
D O I：
10.1039/c5dt05055c
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
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 and H7SiW9V3O40. The designed and synthesized gel -type polyoxometalate ionic liquids (POM-ILs) have demonstrated a tendency to exhibit a layered structure. Moreover, they can undergo a phase transformation from a viscous gel-state to a liquid-state below 100 degrees C, and ionic conductivity up to 10(-3) S cm waswas observed at 120 degrees C. Cyclic voltammetry was carried out to study their electrochemical properties in organic solutions, and it was found that the oxidizability of the three POM-ILs decreases in the order: [MIMPS](7)SiW3V3O40 > [MIMPS]5SiMonVO(40) > [MIMPS](5)SiVViiVOL. This result indicates that the redox behavior can be tuned by changing the chemical composition of the heteropolyanions.
引用
收藏
页码：3958 / 3963
页数：6
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