Influence of the aliphatic chain length of imidazolium based ionic liquids on the surface structure

2010 ◽  
Vol 12 (36) ◽  
pp. 11070 ◽  
Author(s):  
Tobias Hammer ◽  
Manuela Reichelt ◽  
Harald Morgner
Keyword(s):  
Ionic Liquids ◽  
Surface Structure ◽  
Chain Length ◽  
Aliphatic Chain

Effect of the Side-Chain Length and NLO Properties of the N-ethyl-N,N,N-trialkylammonium Ionic Liquids – A DFT Study

2021 ◽  
pp. 116251
Author(s):  
M.A. Olea-Amezcua ◽  
J.E. Castellanos-Águila ◽  
H. HernÁndez-Cocoletzi ◽  
E. Ferreira ◽  
M. Trejo-Durán ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Dft Study ◽  
Side Chain ◽  
Side Chain Length ◽  
Nlo Properties

Spectroscopic Study on Imidazolium-Based Ionic Liquids: Effect of Alkyl Chain Length and Anion

2012 ◽  
Vol 116 (11) ◽  
pp. 3512-3518 ◽  
Author(s):  
Enrico Binetti ◽  
Annamaria Panniello ◽  
Leonardo Triggiani ◽  
Raffaele Tommasi ◽  
Angela Agostiano ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length

Suppression of Radical-Induced Lipid Peroxidation in a Model System by Alkyl Esters of Cinnamate Quaternary Ammonium Salts

2001 ◽  
Vol 56 (9-10) ◽  
pp. 878-885 ◽  
Author(s):  
Anna Krasowska ◽  
Maria Stasiuk ◽  
Malgorzata Oswiecimska ◽  
Arkadiusz Kozubek ◽  
Malgorzata Bien ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Chain Length ◽  
Alkyl Chain ◽  
Quaternary Ammonium Salts ◽  
Alkyl Chain Length ◽  
Ammonium Salts ◽  
Yeast Cells ◽  
Phenolic Antioxidants ◽  
Lipid Phase ◽  
Aliphatic Chain

AbstractThree new groups of phenolic antioxidants, quaternary ammonium salts with a phenol ring and alkyl chains of different length (pyrrolidine ethyl esters of 3,5-di-t-butyl-4-hydroxydihydrocinnamic acid n-alkoxymethylchlorides (PYE-n) or n-alkylbromides (PYA-n) and 2-dimethylaminoethyl ester n-alkylbromides (PPA-n), were synthesized. Some of them were previously found to efficiently protect yeast cells against oxidants and to inhibit the production of thiobarbituric acid-reactive substances in whole yeast cells and in isolated membrane lipids. The new antioxidants (at 1-100 μm) abolished or diminished peroxidation of oliwe oil emulsions caused by the OH•-producing Fe2+ and RO• and ROO•-producing tertbutylhydroperoxide (TBHP) and the azo compounds 2,2′-azobis-(amidinopropane)dihydronitrile (AAPH) and 1,1′-azobis-(1-cyclohexanecarbonitrile) (ACHN): all present at 10 mᴍ . The efficiency of individual both antioxidants was examined in relation to the type of lipid peroxidation inducer, the site of antioxidant incorporation into the emulsion lipid phase, the length of the alkyl chain, and the maximum concentration of effective antioxidant monomers given by its critical micelle concentration. PYA-n class compounds were highly efficient against all peroxidation inducers and their efficiency did not depend on the position of their molecules in the lipid phase and/or on the aliphatic chain length. In contrast, the efficiency of PYE-n and PPA-n class compounds depended both on the type of oxidant and on the length of their aliphatic chain. Their potency against Fe2+ and ACHN increased with increasing alkyl chain length whereas with AAPH it dropped with increasing alkyl chain length. A similar pattern was found with the action of PYE-n against TBHP whereas in the PPA-n group an extending alkyl chain reduced the anti-TBHP efficiency. These relationships may not be entirely straightforward and other factors (chemical nature of each compound, its possible interaction with fluorescent probes used for diagnostics, etc.) may play a considerable and not yet quite clear role. PPA-n class antioxidants have the lowest critical micelle concentration, which may limit their efficiency. Nevertheless, these phenolic antioxidants can be conveniently employed as highly efficient inhibitors of lipid peroxidation.

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

scholarly journals Comprehensive study on the impact of the cation alkyl side chain length on the solubility of water in ionic liquids

2015 ◽  
Vol 210 ◽  
pp. 264-271 ◽  
Author(s):  
Kiki A. Kurnia ◽  
Catarina M.S.S. Neves ◽  
Mara G. Freire ◽  
Luís M.N.B.F. Santos ◽  
João A.P. Coutinho
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Side Chain Length ◽  
The Impact ◽  
Comprehensive Study
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