Hydrophobic 1-allyl-3-alkylimidazolium dicyanamide ionic liquids with low densities

Qinghua Zhang; Xiangyuan Ma; Shimin Liu; Benqun Yang; Liujin Lu; Yude He; Youquan Deng

doi:10.1039/c1jm10491h

Hydrophobic 1-allyl-3-alkylimidazolium dicyanamide ionic liquids with low densities

Qinghua Zhang, Xiangyuan Ma, Shimin Liu, Benqun Yang, Liujin Lu, Yude He, Youquan Deng

CAS - Lanzhou Institute of Chemical Physics

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Nine 1-allyl-3-alkylimidazolium ([AC_nIm]) or 1-vinyl-3-alkylimidazolium ([VC_nIm]) dicyanamides (DCA) were prepared and characterized, and their physicochemical properties were studied in detail. Except for [AVIm]DCA and [AC₄Im]DCA, the other dicyanamides with hexyl or longer alkyl chains on the cation exhibited the characteristic of hydrophobicity. Among them, [AC₈Im]DCA and [AC₁₀Im]DCA were found to possess similar densities to water, i.e. 1.007 g cm^-3 and 0.988 g cm^-3 at 25 °C, respectively. Interestingly, a reversible phase reversion of a [AC₈Im]DCA/H₂O mixture was observed as the temperature varied. These environmentally-friendly liquid materials have potential applications as precursors for syntheses of conducting polymeric materials.

Original language	English
Pages (from-to)	6864-6868
Number of pages	5
Journal	Journal of Materials Chemistry
Volume	21
Issue number	19
DOIs	https://doi.org/10.1039/c1jm10491h
State	Published - 21 May 2011
Externally published	Yes

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title = "Hydrophobic 1-allyl-3-alkylimidazolium dicyanamide ionic liquids with low densities",

abstract = "Nine 1-allyl-3-alkylimidazolium ([ACnIm]) or 1-vinyl-3-alkylimidazolium ([VCnIm]) dicyanamides (DCA) were prepared and characterized, and their physicochemical properties were studied in detail. Except for [AVIm]DCA and [AC4Im]DCA, the other dicyanamides with hexyl or longer alkyl chains on the cation exhibited the characteristic of hydrophobicity. Among them, [AC8Im]DCA and [AC10Im]DCA were found to possess similar densities to water, i.e. 1.007 g cm-3 and 0.988 g cm-3 at 25 °C, respectively. Interestingly, a reversible phase reversion of a [AC8Im]DCA/H2O mixture was observed as the temperature varied. These environmentally-friendly liquid materials have potential applications as precursors for syntheses of conducting polymeric materials.",

author = "Qinghua Zhang and Xiangyuan Ma and Shimin Liu and Benqun Yang and Liujin Lu and Yude He and Youquan Deng",

year = "2011",

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doi = "10.1039/c1jm10491h",

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T1 - Hydrophobic 1-allyl-3-alkylimidazolium dicyanamide ionic liquids with low densities

AU - Zhang, Qinghua

AU - Ma, Xiangyuan

AU - Liu, Shimin

AU - Yang, Benqun

AU - Lu, Liujin

AU - He, Yude

AU - Deng, Youquan

PY - 2011/5/21

Y1 - 2011/5/21

N2 - Nine 1-allyl-3-alkylimidazolium ([ACnIm]) or 1-vinyl-3-alkylimidazolium ([VCnIm]) dicyanamides (DCA) were prepared and characterized, and their physicochemical properties were studied in detail. Except for [AVIm]DCA and [AC4Im]DCA, the other dicyanamides with hexyl or longer alkyl chains on the cation exhibited the characteristic of hydrophobicity. Among them, [AC8Im]DCA and [AC10Im]DCA were found to possess similar densities to water, i.e. 1.007 g cm-3 and 0.988 g cm-3 at 25 °C, respectively. Interestingly, a reversible phase reversion of a [AC8Im]DCA/H2O mixture was observed as the temperature varied. These environmentally-friendly liquid materials have potential applications as precursors for syntheses of conducting polymeric materials.

AB - Nine 1-allyl-3-alkylimidazolium ([ACnIm]) or 1-vinyl-3-alkylimidazolium ([VCnIm]) dicyanamides (DCA) were prepared and characterized, and their physicochemical properties were studied in detail. Except for [AVIm]DCA and [AC4Im]DCA, the other dicyanamides with hexyl or longer alkyl chains on the cation exhibited the characteristic of hydrophobicity. Among them, [AC8Im]DCA and [AC10Im]DCA were found to possess similar densities to water, i.e. 1.007 g cm-3 and 0.988 g cm-3 at 25 °C, respectively. Interestingly, a reversible phase reversion of a [AC8Im]DCA/H2O mixture was observed as the temperature varied. These environmentally-friendly liquid materials have potential applications as precursors for syntheses of conducting polymeric materials.

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EP - 6868

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

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ER -

Hydrophobic 1-allyl-3-alkylimidazolium dicyanamide ionic liquids with low densities

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