Alkyl-substituted N-vinylimidazolium polymerized ionic liquids

Thermal properties and ionic conductivities

Matthew D. Green, David Salas-De La Cruz, Yuesheng Ye, John M. Layman, Yossef A. Elabd, Karen I. Winey, Timothy Edward Long

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

Structure-property relationships for polymerized ionic liquids (PILs) relate chemical structure to ionic conductivity and reveal the importance of glass transition temperature (Tg) and the energy associated with an ion-hopping mechanism for ion conduction for a series of alkyl-substituted vinylimidazolium PILs. The alkyl-substituted vinylimidazolium-based PILs with varying lengths of n-alkyl substituents provide diverse precursors with exchangeable anions to further enhance thermal stability and ionic conductivity. As the anion size increases, regardless of alkyl substituent length, T g decreases and the onset of weight loss, TD, increases. As the length of the alkyl substituent increases, Tg decreases for PILs with Br- and BF4- counteranions. Ionic conductivity increases over an order of magnitude upon exchange of the counteranion from TfO- < Tf2N-.

Original languageEnglish
Pages (from-to)2522-2528
Number of pages7
JournalMacromolecular Chemistry and Physics
Volume212
Issue number23
DOIs
Publication statusPublished - 2011 Dec 1
Externally publishedYes

Fingerprint

Ionic Liquids
Ionic conductivity
Ionic liquids
ion currents
Thermodynamic properties
thermodynamic properties
conductivity
liquids
Anions
Negative ions
Ions
anions
glass transition temperature
ions
Thermodynamic stability
thermal stability
conduction
energy

Keywords

  • anion exchange
  • imidazolium
  • ionic conductivity
  • polymerizable ionic liquid
  • VFT-dependent conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

Green, M. D., Salas-De La Cruz, D., Ye, Y., Layman, J. M., Elabd, Y. A., Winey, K. I., & Long, T. E. (2011). Alkyl-substituted N-vinylimidazolium polymerized ionic liquids: Thermal properties and ionic conductivities. Macromolecular Chemistry and Physics, 212(23), 2522-2528. https://doi.org/10.1002/macp.201100389

Alkyl-substituted N-vinylimidazolium polymerized ionic liquids : Thermal properties and ionic conductivities. / Green, Matthew D.; Salas-De La Cruz, David; Ye, Yuesheng; Layman, John M.; Elabd, Yossef A.; Winey, Karen I.; Long, Timothy Edward.

In: Macromolecular Chemistry and Physics, Vol. 212, No. 23, 01.12.2011, p. 2522-2528.

Research output: Contribution to journalArticle

Green, MD, Salas-De La Cruz, D, Ye, Y, Layman, JM, Elabd, YA, Winey, KI & Long, TE 2011, 'Alkyl-substituted N-vinylimidazolium polymerized ionic liquids: Thermal properties and ionic conductivities', Macromolecular Chemistry and Physics, vol. 212, no. 23, pp. 2522-2528. https://doi.org/10.1002/macp.201100389
Green, Matthew D. ; Salas-De La Cruz, David ; Ye, Yuesheng ; Layman, John M. ; Elabd, Yossef A. ; Winey, Karen I. ; Long, Timothy Edward. / Alkyl-substituted N-vinylimidazolium polymerized ionic liquids : Thermal properties and ionic conductivities. In: Macromolecular Chemistry and Physics. 2011 ; Vol. 212, No. 23. pp. 2522-2528.
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