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Magnetic-Field-Induced Liquid Phase Transformation of an Ionic Liquid N,N,N-Trimethyl-N-propylammonium Bis(trifluoromethanesulfonyl)imide.
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2019-12-12 , DOI: 10.1021/acs.jpclett.9b03217 Hayato Otsuka 1 , Atom Hamasaki 1 , Taku Iiyama 1, 2 , Sumio Ozeki 1
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2019-12-12 , DOI: 10.1021/acs.jpclett.9b03217 Hayato Otsuka 1 , Atom Hamasaki 1 , Taku Iiyama 1, 2 , Sumio Ozeki 1
Affiliation
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An ionic liquid, N,N,N-trimethyl-N-propylammonium bis(trifluoromethanesulfonyl)imide (TMPA TFSI), was transformed from a liquid phase to another fluidic phase by application of the threshold magnetic field at constant temperature (T). The magnetic-field-induced (MFI) phase transformation was detected by the electric potential generated between two Pt electrodes set to the bottom and upper parts in a TMPA TFSI liquid during sweep of the magnetic field (B). The magnetic susceptibility and Verdet constant of TMPA TFSI also were slightly changed over 3 T. The MFI phase formation was almost completed within 3 h after TMPA TFSI liquid was exposed to a 6 T magnetic field, as demonstrated by the melting behavior of TMPA TFSI solid frozen instantaneously under 6 T. Multivariate analysis of the Raman spectra suggested that the MFI transformation should be associated with the conformational change of the transoid-to-cisoidlike species of TFSI ions. A B-T phase diagram of TMPA TFSI is proposed.
中文翻译：
离子液体N，N，N-三甲基-N-丙基铵双（三氟甲烷磺酰基）酰亚胺的磁场诱导液相转变。
通过在恒定温度（T）下施加阈值磁场，将离子液体N，N，N-三甲基-N-丙基双（三氟甲磺酰基）酰亚胺（TMPA TFSI）从液相转变为另一种流体相。磁场感应（MFI）相变是通过在磁场（B）扫描期间在TMPA TFSI液体中设置为底部和上部的两个Pt电极之间产生的电势来检测的。在3 T以上，TMPA TFSI的磁化率和Verdet常数也略有变化。TMPATFSI固体的熔融行为证明，TMPA TFSI液体暴露于6 T磁场后3小时内，MFI相的形成几乎完成。在6 T以下瞬间冻结 拉曼光谱的多变量分析表明，MFI转化应与TFSI离子的类固醇到类固醇类物质的构象变化有关。提出了TMPA TFSI的BT相图。
更新日期：2019-12-13
中文翻译：
离子液体N，N，N-三甲基-N-丙基铵双（三氟甲烷磺酰基）酰亚胺的磁场诱导液相转变。
通过在恒定温度（T）下施加阈值磁场，将离子液体N，N，N-三甲基-N-丙基双（三氟甲磺酰基）酰亚胺（TMPA TFSI）从液相转变为另一种流体相。磁场感应（MFI）相变是通过在磁场（B）扫描期间在TMPA TFSI液体中设置为底部和上部的两个Pt电极之间产生的电势来检测的。在3 T以上，TMPA TFSI的磁化率和Verdet常数也略有变化。TMPATFSI固体的熔融行为证明，TMPA TFSI液体暴露于6 T磁场后3小时内，MFI相的形成几乎完成。在6 T以下瞬间冻结 拉曼光谱的多变量分析表明，MFI转化应与TFSI离子的类固醇到类固醇类物质的构象变化有关。提出了TMPA TFSI的BT相图。
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