The Effect of Lengthening Cation Ether Tails on Ionic Liquid Properties

Lall-Ramnarine, S.; Rodriguez, C.; Fernandez, R.; Zmich, N.; Fernandez, E.; Dhiman, S.; Wishart, J. F.

doi:10.1149/07515.0215ecst

Title: The Effect of Lengthening Cation Ether Tails on Ionic Liquid Properties

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Abstract

In order to explore the effect of multiple ether functionalities on ionic liquid properties, a series of ten pyrrolidinium ionic liquids and ten imidazolium ionic liquids bearing ether and alkyl side chains of varying lengths (4 to 10 atoms in length) were prepared for this study. Their physical properties, such as viscosity, conductivity and thermal profile were measured and compared. Consistent with earlier literature, a single ether substituent substantially decreases the viscosity of pyrrolidinium and imidazolium ILs compared to their alkyl congeners. Remarkably, as the number of ether units in the pyrrolidinium ILs increases there is hardly any increase in the viscosity, in contrast to alkylpyrrolidinium ILs where the viscosity increases steadily with chain length. Viscosities of imidazolium ether ILs increase with chain length but always remain well below their alkyl congeners. These results provide significant insight on the choice of starting materials for researchers designing ILs for specific applications.

Authors:

Lall-Ramnarine, S. ^[1]; Rodriguez, C. ^[1]; Fernandez, R. ^[1]; Zmich, N. ^[2]; Fernandez, E. ^[1]; Dhiman, S. ^[2]; Wishart, J. F. ^[2]

Queensborough Community College (CUNY), Bayside, NY (United States). Dept. of Chemistry
Brookhaven National Laboratory (BNL), Upton, NY (United States). Chemistry Dept.

Publication Date:: Tue Aug 30 00:00:00 EDT 2016

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Institutes of Health (NIH); City Univ. of New York, New York City, NY (United States); National Science Foundation (NSF); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)

OSTI Identifier:: 1425011

Report Number(s):: BNL-114825-2017-JAAM
Journal ID: ISSN 1938-6737

Grant/Contract Number:: SC0012704; CHE-1362272; AC02-98CH10886

Resource Type:: Accepted Manuscript

Journal Name:: ECS Transactions (Online)

Additional Journal Information:: Journal Name: ECS Transactions (Online); Journal Volume: 75; Journal Issue: 15; Journal ID: ISSN 1938-6737

Publisher:: Electrochemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY

Citation Formats


                    Lall-Ramnarine, S., Rodriguez, C., Fernandez, R., Zmich, N., Fernandez, E., Dhiman, S., and Wishart, J. F. The Effect of Lengthening Cation Ether Tails on Ionic Liquid Properties.  United States: N. p., 2016. 
Web.  doi:10.1149/07515.0215ecst.

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                    Lall-Ramnarine, S., Rodriguez, C., Fernandez, R., Zmich, N., Fernandez, E., Dhiman, S., & Wishart, J. F. The Effect of Lengthening Cation Ether Tails on Ionic Liquid Properties.  United States.  https://doi.org/10.1149/07515.0215ecst

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                    Lall-Ramnarine, S., Rodriguez, C., Fernandez, R., Zmich, N., Fernandez, E., Dhiman, S., and Wishart, J. F. Tue .  
"The Effect of Lengthening Cation Ether Tails on Ionic Liquid Properties".  United States.  https://doi.org/10.1149/07515.0215ecst.  https://www.osti.gov/servlets/purl/1425011.

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@article{osti_1425011,

  title        = {The Effect of Lengthening Cation Ether Tails on Ionic Liquid Properties},

  author       = {Lall-Ramnarine, S. and Rodriguez, C. and Fernandez, R. and Zmich, N. and Fernandez, E. and Dhiman, S. and Wishart, J. F.},

  abstractNote = {In order to explore the effect of multiple ether functionalities on ionic liquid properties, a series of ten pyrrolidinium ionic liquids and ten imidazolium ionic liquids bearing ether and alkyl side chains of varying lengths (4 to 10 atoms in length) were prepared for this study. Their physical properties, such as viscosity, conductivity and thermal profile were measured and compared. Consistent with earlier literature, a single ether substituent substantially decreases the viscosity of pyrrolidinium and imidazolium ILs compared to their alkyl congeners. Remarkably, as the number of ether units in the pyrrolidinium ILs increases there is hardly any increase in the viscosity, in contrast to alkylpyrrolidinium ILs where the viscosity increases steadily with chain length. Viscosities of imidazolium ether ILs increase with chain length but always remain well below their alkyl congeners. These results provide significant insight on the choice of starting materials for researchers designing ILs for specific applications.},

  doi          = {10.1149/07515.0215ecst},

  journal      = {ECS Transactions (Online)},

  number       = 15,

  volume       = 75,

  place        = {United States},

  year         = {Tue Aug 30 00:00:00 EDT 2016},

  month        = {Tue Aug 30 00:00:00 EDT 2016}

}

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