Catanionic Surfactant Self-Assembly in Protic Ionic Liquids

High throughput methods were used to investigate ionic liquid containing solutions to provide systematic data of a broad compositional space. We have principally focused on the surface tension, apparent pH and liquid nanostructure to identify potential self-assembly and protein stabilizing ability of solvent systems.

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Lyotropic liquid crystal phase behavior of a cationic amphiphile in aqueous and non-stoichiometric protic ionic liquid mixtures

Soft Matter ◽

10.1039/d0sm01298j ◽

2020 ◽

Vol 16 (41) ◽

pp. 9456-9470

Author(s):

Dilek Yalcin ◽

Calum J. Drummond ◽

Tamar L. Greaves

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Liquid Crystal ◽

Self Assembly ◽

Liquid Mixtures ◽

Lyotropic Liquid Crystal ◽

Liquid Crystal Phase ◽

Protic Ionic Liquids ◽

Protic Ionic Liquid ◽

Cationic Amphiphile

Protic ionic liquids (PILs) are the largest and most tailorable known class of non-aqueous solvents which possess the ability to support amphiphile self-assembly.

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Amino Acid-derived Protic Ionic Liquids: Physicochemical Properties and Behaviour as Amphiphile Self-assembly Media

Australian Journal of Chemistry ◽

10.1071/ch10314 ◽

2011 ◽

Vol 64 (2) ◽

pp. 180 ◽

Cited By ~ 34

Author(s):

Jiayi Wang ◽

Tamar L. Greaves ◽

Danielle F. Kennedy ◽

Asoka Weerawardena ◽

Gonghua Song ◽

...

Keyword(s):

Ionic Liquids ◽

Amino Acid ◽

Methyl Ester ◽

Physicochemical Properties ◽

Self Assembly ◽

Ionic Surfactant ◽

Hexadecyltrimethylammonium Bromide ◽

Structure Property ◽

Protic Ionic Liquids ◽

Fused Salts

The thermal phase transitions and physicochemical properties of a series of 21 amino acid-derived protic ionic liquids and four protic molten salts have been investigated. Structure–property comparisons for this series were investigated for alkyl- and cyclic amino acid cations, and ethoxy and methoxy groups on the cation, combined with nitrate or various carboxylate-containing anions. All the protic fused salts were found to be ‘fragile’. Most of the protic fused salts exhibited a glass transition, with the transition temperatures ranging from –90° to –42°C. Viscosities and conductivities ranged from 0.03 to 15.46 Pa s and 0.02 to 2.20 mS cm–1 at 25°C respectively. The protic ionic liquids alanine methyl ester glycolate, proline methyl ester nitrate, and proline methyl ester glycolate were found to be capable of supporting amphiphile self-assembly. Lamellar or hexagonal liquid crystalline phases were observed with the cationic surfactant hexadecyltrimethylammonium bromide and the non-ionic surfactant Myverol 18–99K.

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The origin of surfactant amphiphilicity and self-assembly in protic ionic liquids

Chemical Science ◽

10.1039/c5sc01202c ◽

2015 ◽

Vol 6 (11) ◽

pp. 6189-6198 ◽

Cited By ~ 24

Author(s):

Andrew Dolan ◽

Rob Atkin ◽

Gregory G. Warr

Keyword(s):

Ionic Liquids ◽

Self Assembly ◽

Alkyl Chain ◽

Micelle Formation ◽

Head Group ◽

Protic Ionic Liquids

Surfactant alkyl chain, head-group and counterion solvation in protic ionic liquids differs from water, affecting micelle formation and structure.

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Proof of ion-pair structures in ammonium-based protic ionic liquids using combined NMR and DFT/PCM-based chemical shift calculations

Physical Chemistry Chemical Physics ◽

10.1039/c7cp04481j ◽

2017 ◽

Vol 19 (36) ◽

pp. 25033-25043 ◽

Cited By ~ 7

Author(s):

M. Lozynski ◽

J. Pernak ◽

Z. Gdaniec ◽

B. Gorska ◽

F. Béguin

Keyword(s):

Ionic Liquids ◽

Nmr Spectroscopy ◽

Chemical Shift ◽

Self Assembly ◽

Ion Pair ◽

The Self ◽

Prediction Methods ◽

Protic Ionic Liquids ◽

H Nmr ◽

Chemical Shift Calculations

The self-assembly of triethylammonium bis(trifluoromethylsulfonyl)imide, i.e. [(C2H5)3NH][TFSI], in chloroform and aqueous solutions has been investigated using 1H NMR spectroscopy and computational (DFT/PCM prediction) methods.

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