Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (09): 1473-1477.doi: 10.3866/PKU.WHXB20070932

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

SHI Cheng-Wu; GE Qian; QIU Zhi-Guo; LI Bing; HAN Shi-Kui   

  1. School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P. R. China
  • Received:2007-02-13 Revised:2007-04-16 Published:2007-09-06
  • Contact: SHI Cheng-Wu

Abstract: 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.

Key words: 3-Hexyl-1-methylimidazoliumiodide, Autoclave, Synthesis, Dye-sensitized solar cell


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