中文摘要：

一系列不对称的 monoimidazolium 基于 dihydroboronium 的离子的液体(IL ) 从 amine-boranes 被综合。所有产生 IL 被 ¹ H 和 ¹³ C NMR，红外光谱学，元素的分析或高分辨率集中光谱。与对称的 bisimidazolium 相比，基于 dihydroboronium 的 IL，有更短的点火延期的展出改进性质预定的这些新 IL (标志) ，更高的密度，和更低的阶段转移作为绿燃料显示出有希望的申请潜力的温度。

英文摘要：

A series of asymmetric monoimidazolium dihydroboronium-based ionic liquids （ILs） were synthesized from amine-boranes. All the resulting ILs were fully characterized by 1H and 13C NMR, IR spectroscopy, elemental analysis or high resolution mass spectrum. Compared with the symmetric bisimidazolium dihydroboronium-based ILs, these new ILs exhibited improved properties with shorter ignition delay times （IDs）, higher densities, and lower phase transition temperature showing the promising application potential as green propellants. A series of asymmetric monoimidazolium dihydroboronium-based ionic liquids （ILs） were synthesized from amine-boranes. All the resulting ILs were fully characterized by 1H and 13C NMR, IR spectroscopy, elemental anal- ysis or high resolution mass spectrum. Compared with the symmetric bisimidazolium dihydroboronium-based ILs, these new ILs exhibited improved properties with shorter ignition delay times （IDs）, higher densities, and lower phase transition temperature showing the promising application potential as green propellants.