Electrochemical and physicochemical properties of redox ionic liquids using electroactive anions: influence of alkylimidazolium chain length

2016 ◽  
Vol 200 ◽  
pp. 283-289 ◽  
Author(s):  
Han Jin Xie ◽  
Bruno Gélinas ◽  
Dominic Rochefort
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Chain Length ◽  
Electroactive Anions

Effect of anion chain length on physicochemical properties of N,N-dimethylethanolammonium based protic ionic liquids

2016 ◽  
Vol 415 ◽  
pp. 1-7 ◽  
Author(s):  
Gyanendra Sharma ◽  
Ramesh L. Gardas ◽  
Alberto Coronas ◽  
G. Venkatarathnam
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Chain Length ◽  
Protic Ionic Liquids

Influence of the alkyl chain length on the physicochemical properties and microbial biocompatibility of phosphonium based fatty acid ionic liquids

2021 ◽  
pp. 1-11
Author(s):  
Aafaq A. Tantray ◽  
Nitin R. Rode ◽  
Sandesh S. Shinde ◽  
Vinod Nandre ◽  
Kisan M. Kodam ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Fatty Acid ◽  
Physicochemical Properties ◽  
Chain Length ◽  
Antimicrobial Activities ◽  
Decomposition Temperature ◽  
Toxicity Assessment ◽  
Thermal Stabilities ◽  
Derived Properties ◽  
Unique Chemical

Ionic liquids (ILs) have remarkable properties and applications in many areas of science. Phosphonium ILs have become important because of their unique chemical and thermal stabilities. The present work is focused on the synthesis, characterisation, physicochemical properties, and microbial toxicity assessment of phosphonium ILs bearing seven different fatty acid anions. The structures of the synthesised ILs were confirmed by 1H and 13C nuclear magnetic resonance (NMR) and FTIR spectroscopy. Physicochemical properties such as density and viscosity of pure ILs were measured at temperatures ranging from 298.15 to 313.15 K. The experimental density decreased, whereas the viscosity increased with an increasing number of carbon atoms in the anion. The derived properties were also found to be anion dependent. The thermal decomposition temperature was investigated by TGA. Subsequently, the toxicity profile of the ILs was determined for selected Gram positive and Gram negative bacteria and some species of fungi in terms of minimum inhibitory concentrations (MIC). The results show that the antimicrobial activities of the ILs are strongly related to the structures of the ILs, where an increase in toxicity was observed with increasing alkyl group chain length of the fatty acid anion.

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