文献类型：期刊文献

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

作者：Wang, Jiayi[1,2];Greaves, Tamar L.[1];Kennedy, Danielle F.[1];Weerawardena, Asoka[1];Song, Gonghua[2];Drummond, Calum J.[1]

机构：[1]CMSE, Clayton, Vic 3169, Australia;[2]E China Univ Sci & Technol, Shanghai Key Lab Chem Biol, Sch Pharm, Shanghai 200237, Peoples R China

年份：2011

卷号：64

期号：2

起止页码：180

外文期刊名：AUSTRALIAN JOURNAL OF CHEMISTRY

收录：;EI(收录号：20110813695537);WOS:【SCI-EXPANDED(收录号:WOS:000287327100009)】；

基金：We would like to acknowledge Thomas Ruether, CSIRO, for use of the conductivity rig. J.W. would like to acknowledge the China Scholarship Council (CSC) for a visiting scholarship and CSIRO for the exchange program. C.J.D. is the recipient of an Australian Research Council (ARC) Federation Fellowship. This work was also partly supported by an ARC Discovery Project grant, DP0666961.

语种：英文

外文关键词：Amino acids - Dyes - Ionic liquids - Nitrates - Self assembly - Cationic surfactants - Esters - Carboxylation - Glass transition - Positive ions

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.