1-甲基-3-己基咪唑碘的合成及在染料敏化太阳电池中的应用

利用高压釜使1-甲基咪唑和碘代正己烷直接反应生成离子液体1-甲基-3-己基咪唑碘, 并考察了温度对反应的影响. 结果表明, 升高反应温度, 可使1-甲基咪唑和碘代正己烷按化学计量比进行反应, 产率近100%, 该方法操作简单, 所得产品纯度高, 反应过程不需要使用有机溶剂, 且对环境友好. 同时还测量了I-3在1-甲基-3-己基咪唑碘和1-甲基咪唑混合液中的表观扩散系数及其所组成的染料敏化太阳电池的光伏性能.

Synthesis of 3-hexyl-1-methylimidazolium Iodide and Its Application in Dye-Sensitized Solar Cells

A preparation method of ambient temperature ionic liquid,3-hexyl-1-methylimidazolium iodide,via efficient reaction of 1-methylimidazole with 1-hexyl iodide using Teflon-lined,stainless steel autoclave,was described. It was found that excellent yield,about 100%,was obtained due to the increase of reaction temperature,which resulted in the feasibility of using only stoichiometric amounts of reactants.The main advantages of this present approach are solvent-free,eco-friendly,easy procedure and high purity of products.Moreover,the apparent diffusion coefficient of triiodide in the mixture of 3-hexyl-1-methylimidazolium iodide and 1-methylimidazole was investigated by cyclic voltammetry.The photovoltaic performances of dye-sensitized solar cells with electrolytes containing the mixture and different concentrations of iodine were compared.