Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
Australian Journal of Chemistry

Australian Journal of Chemistry

Volume 65 Number 11 2012

RESEARCH FRONT: Do We Know All About Ionic Liquids?

CH124815th Australasian Symposium on Ionic Liquids

Jenny Pringle and Angel A. J. Torriero
pp. 1463-1464
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The 5th Australasian Symposium on Ionic Liquids was held in May 2012 in Clayton, Australia, and brought together internationally recognised researchers in a discipline that crosses borders incorporating theory, chemistry, and engineering. This research front, dedicated to ionic liquids, comprises a selection of papers representing the current look of this emerging field.

CH12344Computer-Aided Molecular Design of Ionic Liquids: An Overview

Derick C. Weis and Douglas R. MacFarlane
pp. 1478-1486
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Computer-aided molecular design (CAMD) is a technique that helps select potential target molecules that will have desired properties before synthesis and testing in the laboratory, and provides an excellent complement to the chemical intuition possessed by experimentalists. In this overview, we present the general methodology for CAMD, and describe recent progress in this area related to ionic liquids.

CH12314Benchmark Values: Thermochemistry of the Ionic Liquid [C4Py][Cl]

Sergey P. Verevkin, Dzmitry H. Zaitsau, Vladimir N. Emel'yanenko, Ricardas V. Ralys, Christoph Schick, Monika Geppert-Rybczyńska, Saivenkataraman Jayaraman and Edward J. Maginn
pp. 1487-1490
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A combination of experimental methods (DSC + TGA) with theoretical methods (quantum chemical calculations and MD simulations) provided benchmark thermochemical values for ionic liquid [C4Py][Cl].

CH12342Structure of Regenerated Celluloses Treated with Ionic Liquids and Comparison of their Enzymatic Digestibility by Purified Cellulase Components

Masahiro Mizuno, Shuji Kachi, Eiji Togawa, Noriko Hayashi, Kouichi Nozaki, Toshiyuki Itoh and Yoshihiko Amano
pp. 1491-1496
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Dissolution of microcrystalline cellulose with ionic liquid and regeneration of cellulose by adding poor solvent cause the change of crystal allomorph and crystallinity of cellulose. These structural differences affect the adsorption ability of cellulase on the surface of regenerated cellulose and the enzymatic digestibility by monocomponent cellulase.

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We prepared bacterial cellulose membranes from nata de coco, an indigenous dessert of the Philippines, as a base polymer in the liquid membrane process. In the presence of Aliquat 336 (tri(C8–C10)methyl ammonium chloride) as an ionic liquid, we obtained stable bacterial cellulose membranes. Quinoline and pyridine successfully permeated through the membranes against heptane.

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An investigation of the polymerisation reaction of pyrrole and 3,4-ethylenedioxythiophene using FeCl3·6H2O in the room temperature ionic liquid C4mpyrTFSI reveals that H+, present due to deprotonation of coordinated waters, may itself act as the chemical oxidant for the polymerisation reaction.

CH12305Influence of Additives on the Speciation, Morphology, and Nanocrystallinity of Aluminium Electrodeposition

Lian Liu, Xingmei Lu, Yingjun Cai, Yong Zheng and Suojiang Zhang
pp. 1523-1528
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Four series of additives have significant influence on the speciation and morphology of aluminium electrodeposition. The smoothness or uniformity of deposits can be adjusted by using different additives. Moreover, some of the aluminium deposits are nanocrystalline in nature.

CH12330Aluminium Nanowire Electrodes for Lithium-Ion Batteries

Sherif Zein El Abedin, Arnd Garsuch and Frank Endres
pp. 1529-1533
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In this paper, it is shown that electrochemically made self-standing aluminium nanowires are promising as host materials for lithium in lithium-ion batteries. Lithium deposition/stripping in this material delivers an amperometric charge density close to 800 mAh g–1 with ionic liquids as electrolyte. The material does not show tremendous degradation after at least 50 CV cycles.

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The effect of storage time on the cyclability of lithium electrodes in 0.5 m LiBF4/[C3mpyr+][FSI] was investigated. Chemical interaction results in surface passivation and impacts on the charging/discharging process. The electrode resistance decreased after cycling due to significant structural rearrangement of the surface layer.

CH12332The Influence of Water and Metal Ions on the Transport Properties of Trihexyl(tetradecyl)phosphonium Chloride

Paul M. Bayley, Jan Novak, Timothy Khoo, Melanie M. Britton, Patrick C. Howlett, Douglas R. Macfarlane and Maria Forsyth
pp. 1542-1547
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The physical chemistry of an ionic liquid electrolyte with the addition of water and different metal salts is explored with numerous techniques including NMR. The conductivity of the electrolytes increases an order of magnitude when saturated with water. The metal salts interestingly also increase conductivity at low water concentrations.

CH12374Surface Composition of Mixtures of Ethylammonium Nitrate, Ethanolammonium Nitrate, and Water

Deborah Wakeham, Daniel Eschebach, Grant B. Webber, Rob Atkin and Gregory G. Warr
pp. 1554-1556
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Surface tensiometry of binary mixtures of ethylammonium nitrate, ethanolammonium nitrate, and water reveals amphiphilic character for the ethylammonium cation, but not for ethanolammonium. The surface film incorporates nitrate counterions, and electrostatic and H-bonding interaction, rather than alkyl chain packing, determine the saturated adsorbed film structure.

CH12331Preparation of Magnetic Ionic Liquids Composed of Hybrid-Type Anions

Yumiko Takagi, Yoriko Kusunoki, Yukihiro Yoshida, Hirofusa Tanaka, Gunzi Saito, Kosuke Katagiri and Toshiyuki Oshiki
pp. 1557-1560
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1-Ethyl-3-methylimidazolium ethylsulfate ([C2mim][EtSO4]) was mixed with iron(III) chloride•6H2O to give a magnetic ionic liquid composed of the hybrid-type anion, [C2mim][FeCl3•EtSO4], which showed a slightly different magnetic property than [C2mim][FeCl4]. On the other hand, reaction of [C2mim][EtSO4] with cobalt(II) chloride hydrate formed [C2mim]2[CoIICl4], the structure of which was characterised by X-ray crystallographic analysis.

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