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Molecules 2010, 15(4), 2388-2397; doi:10.3390/molecules15042388
Article

Synthesis and Physico-Chemical Properties of New Tetraethylammonium-Based Amino Acid Chiral Ionic Liquids

1,2,* , 1
, 1
, 1
, 1
 and 3
1 Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia 2 Structural Biology Research Centre, Malaysia Genome Institute, UKM-MTDC Smart Technology Centre, 43600 UKM Bangi, Selangor, Malaysia 3 Laboratory of Industrial Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
* Author to whom correspondence should be addressed.
Received: 12 February 2010 / Revised: 15 March 2010 / Accepted: 22 March 2010 / Published: 5 April 2010
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Abstract

This paper reports the synthesis of a series of new tetraethylammonium-based amino acid chiral ionic liquids (CILs). Their physico-chemical properties, including melting point, thermal stability, viscosity and ionic conductivity, have been comprehensively studied. The obtained results indicated that the decomposition for these salts proceeds in one step and the temperature of decomposition (Tonset) is in the range of 168–210 °C. Several new CILs prepared in this work showed high ionic conductivity compared to the amino acid ionic liquids (AAILs) found in the literature.
Keywords: chiral ionic liquids; tetraethylammonium; amino acids; viscosity; ionic conductivity chiral ionic liquids; tetraethylammonium; amino acids; viscosity; ionic conductivity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Rahman, M.B.A.; Jumbri, K.; Basri, M.; Abdulmalek, E.; Sirat, K.; Salleh, A.B. Synthesis and Physico-Chemical Properties of New Tetraethylammonium-Based Amino Acid Chiral Ionic Liquids. Molecules 2010, 15, 2388-2397.

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