Amino acid-derived protic ionic liquids: Physicochemical properties and behaviour as amphiphile self-assembly media
AUSTRALIAN JOURNAL OF CHEMISTRY（2011）
摘要
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 degrees to -42 degrees C. Viscosities and conductivities ranged from 0.03 to 15.46 Pa s and 0.02 to 2.20mS cm(-1) at 25 degrees 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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关键词
analytical chemistry,colloids,sensors,surface chemistry,carboxylation,physical chemistry,macromolecules,structure,positive ions,mass spectrometry,organic chemistry,electrochemistry,amino acids,ab initio calculations,catalysis,medicinal chemistry,biosensors,self assembly,density functional theory,computational chemistry,combinatorial chemistry,crystallography,pharmaceutical chemistry,crystal structures,transition temperature,nanotechnology,supramolecular chemistry,combinatorial,enzymes,peptide,biocatalysis,spectroscopy,interfaces,green chemistry,quantum chemistry,biological chemistry,glass transition,kinetics,proteins,inorganic chemistry,educational,amphiphiles,reaction mechanisms,polymer chemistry,ionic liquids,photochemistry
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