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Physicochemical and Solution Properties of Quaternary-Ammonium-Salt-Type Amphiphilic Gemini Ionic Liquids with Spacers Containing Oxygen or Nitrogen
Colloids and Surfaces A: Physicochemical and Engineering Aspects ( IF 5.2 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.colsurfa.2020.125218
Risa Kawai , Maiko Niki , Shiho Yada , Tomokazu Yoshimura

Abstract Quaternary-ammonium-salt-type amphiphilic gemini compounds 2Cn(Spacer) NTf2 were synthesized by the quaternization of a tertiary diamine and an n-alkyl bromide, followed by an ion-exchange reaction with potassium bis(trifluoromethanesulfonyl)imide [(Spacer) = (2-O-2), (2-O-2-O-2), (2-N-2), (2/2-N-2), (2/2)-OH, (5), (6), and n represents the alkyl chain lengths; n = 10, 12, 14 for the 2-O-2 spacer, and n = 12 for all others]. The compounds with melting points below 100 °C were treated as ionic liquids during the subsequent measurements. The melting points of the amphiphilic gemini compounds could be arranged in the following order, based on the spacer present: (2/2)-OH >> 2/2-N-2 > (2-N-2) > (2-O-2) > (5) > (6) > (2-O-2-O-2). The melting points for 2Cn(2-O-2) NTf2 (n = 10, 12), 2C12(2-O-2-O-2) NTf2, and 2C12(2-N-2) NTf2 could be reduced to

中文翻译:

含氧或氮间隔物的季铵盐型两亲双子离子液体的理化和溶液性质

摘要 季铵盐型两亲双子化合物 2Cn(Spacer) NTf2 通过叔二胺和正烷基溴的季铵化,然后与双(三氟甲磺酰)亚胺钾 [(Spacer) 进行离子交换反应合成。 = (2-O-2), (2-O-2-O-2), (2-N-2), (2/2-N-2), (2/2)-OH, (5) , (6), n表示烷基链长;n = 10, 12, 14 用于 2-O-2 垫片,而 n = 12 用于所有其他]。在随后的测量中,熔点低于 100 °C 的化合物被视为离子液体。基于存在的间隔基,两亲双子化合物的熔点可以按以下顺序排列:(2/2)-OH >> 2/2-N-2 > (2-N-2) > (2- O-2) > (5) > (6) > (2-O-2-O-2)。2Cn(2-O-2) NTf2 (n = 10, 12), 2C12(2-O-2-O-2) NTf2 的熔点,
更新日期:2020-10-01
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