摘要
以1-甲基咪唑、3-氯-环氧丙烷和四氟硼酸为原料,在30℃和超声波辅助作用下,合成了羟基功能化离子液体1-(3-氯-2-羟基丙基)-3-甲基咪唑四氟硼酸盐(CHPMIM.BF4)和1,3-二-(1-甲基咪唑基)-2-丙醇四氟硼酸盐盐酸盐(DMIMP.BF4.Cl),该方法大大缩短了反应时间,避免了无机盐的生成。它们的电化学稳定性和离子电导率测定结果表明,CHPMIM.BF4和DMIMP.BF4.Cl具有较好的电化学稳定性,电化学稳定窗口分别为4.6 V和4.7 V;但前者的离子导电率要远远小于后者,25℃时它们的电导率分别为0.26mS/cm和9.86mS/cm。
Two hydroxyl-functionalized ionic liquids of 1-（3-chloro-2-hydroxy-propyl）-3-methyl-imidazolium tetrafluoroborate（CHPMIM·BF4） and 1,3-di-（methyl-imidazol-1-yl）-2-propanol tetrafluoroborate chloride（DMIMP·BF4·Cl） were synthesized by the ultrasound-assisted reaction of N-methylimidazole with HBF4 and 3-chloro-propylene oxide at 30℃,in which 3-chloro-propylene oxide acts as alkylation agent to introduce the hydroxyl group.This method significantly cut down the reaction time without forming inorganic salts.The determination of their electrochemical properties showed that CHPMIM·BF4 and DMIMP·BF4·Cl possess wide electrochemical stability windows of 4.6V and 4.7V respectively,but the ionic conductivity of the former（0.26mS/cm at 25℃） was far lower than that of the latter（9.86mS/cm at 25℃）.
出处
《化学通报》
CAS
CSCD
北大核心
2013年第5期447-450,共4页
Chemistry
基金
青岛市科技发展计划应用基础研究项目(12-1-4-3-(24)-jch)
山东省自然科学基金项目(ZR2009BM022)
国家海洋局海洋生物活性物质与现代分析技术重点实验室开放基金项目(MBSMAT-2012-07)资助
关键词
超声辅助
羟基功能化离子液体
电化学稳定性
离子电导率
Ultrasound assisted
Hydroxyl-functionalized ionic liquids
Electrochemical stability
Ionic conductivity
