A new salt bridge based on the hydrophobic room-temperature molten salt
A new salt bridge based on the hydrophobic room-temperature molten salt
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DOI：
10.1246/bcsj.79.1017
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发表时间：
2006-07
影响因子：
4
通讯作者：
T. Kakiuchi;Takahiro Yoshimatsu
中科院分区：
文献类型：
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作者：
T. Kakiuchi;Takahiro Yoshimatsu
基于疏水性室温熔盐（离子液体）的概念性新盐桥已被证明是基于浓 KCl 水相的传统盐桥的有前途的替代品。 1-甲基-3-辛基咪唑鎓双(三氟甲基磺酰基)亚胺(C 8 mimC 1 C 1 N)与水不混溶，形成液-液两相体系，当夹在两种电解质水溶液之间时，表现出稳定的相界电位。界面之间的相界电位由 C 8 mim + 和 C 1 C 1 N - 离子在水相 (W) 中的分配决定，并且受电解质类型及其在 W 中浓度的影响很小，只要溶解在 W 中的离子足够亲水即可。熔盐相的凝胶化不影响相界电位。新的盐桥解决了基于氯化钾的盐桥固有的大部分问题。
A conceptually new salt bridge based on a hydrophobic room-temperature molten salt (ionic liquid) has been demonstrated to be a promising alternative to traditional salt bridges based on a concentrated aqueous KCl phase. 1-Methyl-3-octylimidazolium bis(trifluoromethylsulfonyl)imide (C 8 mimC 1 C 1 N), which is immiscible with water and forms a liquid-liquid two-phase system, exhibits a stable phase-boundary potential when sandwiched by two aqueous electrolyte solutions. The phase-boundary potential between the interface is determined by the partition of C 8 mim + and C 1 C 1 N - ions in the aqueous phase (W) and is little affected by the type of electrolytes and their concentrations in W, provided that ions dissolved in W are hydrophilic enough. The gelation of the molten salt phase does not affect the phase-boundary potential. The new salt bridge is free from most of the problems inherent to KCl-based salt bridges.