Wu Xuefei, Li Yunyan, Wu Qingyin, Ding Hong, Yan Wenfu
Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
Phys Chem Chem Phys. 2014 Nov 28;16(44):24598-603. doi: 10.1039/c4cp03673e.
A series of vanadium-substituted Dawson-structure POM-type ionic liquids, [TEAPS]7P2W17VO62 and [TEAPS]9P2W15V3O62, bearing sulfo-group grafted ammonium (TEAPS) cations and Dawson-type polyoxoanions have been formed which are reversible-thermal-response type gels. These gel-type compounds exhibit a phase transition from a quasi-solid gel phase to an isotropic sol phase. What's more, this series of hybrid compounds can undergo reversible electrochemical reactions in dimethyl formamide (DMF) owing to the reduction of the vanadium in POM anions as a simple anion, which is unlikely to happen in water solution because of water protonation.
一系列具有磺酸基接枝铵（TEAPS）阳离子和道森型聚氧阴离子的钒取代道森结构多金属氧酸盐型离子液体，即[TEAPS]7P2W17VO62和[TEAPS]9P2W15V3O62，已被制备出来，它们是具有可逆热响应的凝胶。这些凝胶型化合物呈现出从准固态凝胶相到各向同性溶胶相的相变。此外，由于作为简单阴离子的多金属氧酸盐阴离子中的钒的还原，这一系列杂化化合物在二甲基甲酰胺（DMF）中可发生可逆电化学反应，而由于水的质子化，这种反应在水溶液中不太可能发生。
