首页> 外文期刊>Chemistry: A European journal >Low-Melting,Low-Viscous,Hydrophobic IO_nic Liquids:l-Alkyl(Alkyl Ether)-3-methylimidazoIium Perfluoroalkyltrifluoroborate
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Low-Melting,Low-Viscous,Hydrophobic IO_nic Liquids:l-Alkyl(Alkyl Ether)-3-methylimidazoIium Perfluoroalkyltrifluoroborate

机译:低熔点,低粘度,疏水性IO液体:1-烷基(烷基醚)-3-甲基咪唑全氟烷基三氟硼酸酯

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摘要

A series of twenty two hy-drophobic iO_nic liquids,l-alkyl(alkyl ether)-3-methylimidazolium([C_mmim]~+ or [C_mO_nmim]~+;where C_m is 1-alkyl,C_m = nC_mH_(2m+1)),m = 1-4 and 6;C_mO_n is 1-alkyl ether,C_2O_1 = CH_3OCH_2,C_3O,= CH_3OCH_2CH_2,and C_5O_2 = CH_3(OCH_2CH_2)_2)perfluoroalkyltri-fluoroborate([R_FBF_3]~-,R_F = CF_3,C_2F_5,nC_3F_7,nC_4F_9),have been prepared and characterized.Some of the important physicochemical properties of these salts including melting point,glass transitiO_n,viscosity,density,iO_nic cO_nductivity,thermal and electrochemical stability,have been determined and were compared with those of the reported [BF_4]-based O_nes.The influence of the structure variatiO_n in the imidazolium catiO_n and the perfluoroalkyltrifluoro-borate([R_FBF3]~-)aniO_n O_n the above physicochemical properties was discussed.The key features of these new salts are their low melting points(-42 to 35 deg C)or extremely low glass transitiO_n(between-87 and-H7deg C)without melting,and cO_nsiderably low viscosities(26-77 cP at 25 deg C).
机译:一系列二十二种疏水性碘液体,1-烷基(烷基醚)-3-甲基咪唑鎓([C_mmim]〜+或[C_mO_nmim]〜+;其中C_m为1-烷基,C_m = nC_mH_(2m + 1) ),m = 1-4和6; C_mO_n是1-烷基醚,C_2O_1 = CH_3OCH_2,C_3O,= CH_3OCH_2CH_2,并且C_5O_2 = CH_3(OCH_2CH_2)_2)全氟烷基三氟硼酸酯([R_FBF_3]〜-,R_F = CF_3,C_2 (nC_3F_7,nC_4F_9)的制备和表征。已经确定了这些盐的一些重要的理化性质,包括熔点,玻璃化转变温度,粘度,密度,iO_nic cO_电导率,热和电化学稳定性,并与这些盐进行了比较。报道了基于[BF_4]的O_nes。讨论了咪唑鎓catiO_n和全氟烷基三氟硼酸酯([R_FBF3]〜-)aniO_n O_n的结构变量对上述理化性质的影响。这些新盐的关键特征是其低熔点点(-42至35摄氏度)或极低的玻璃传输温度(在-87至-H7摄氏度之间)不熔化,cO_nsid粘度极低(25摄氏度时26-77 cP)。

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