Unusual phosphatidylcholine lipid phase behavior in the ionic liquid ethylammonium nitrate

被引：8

作者：

Manni, Livia Salvati ^{[1
,2
,3
]}

Davies, Caitlin ^{[1
,2
]}

Wood, Kathleen ^{[4
]}

Assenza, Salvatore ^{[5
]}

Atkin, Rob ^{[6
]}

Warr, Gregory G. ^{[1
,2
,7
]}

机构：

[1] Univ Sydney, Nano Inst, Sydney, NSW 2006, Australia

[2] Univ Sydney, Sydney, NSW 2006, Australia

[3] Univ Newcastle, Sch Environm & Life Sci, Callaghan, NSW 2308, Australia

[4] Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, New Illawarra Rd, Lucas Heights, NSW 2234, Australia

[5] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, Madrid, Spain

[6] Univ Western Australia, Sch Mol Sci, Perth, WA 6009, Australia

[7] Univ Sydney, Sch Chem F11, Sydney, NSW 2006, Australia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2023年 / 643卷

基金：

澳大利亚研究理事会;

关键词：

LIPID self-assembly; Phospholipids; Ionic liquids; Small angle X-ray scattering; Small angle neutron scattering; NANOSTRUCTURE; BROMIDE;

D O I：

10.1016/j.jcis.2023.03.161

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hypothesis: The forces that govern lipid self-assembly ionic liquids are similar to water, but their different balance can result in unexpected behaviour. Experiments: The self-assembly behaviour and phase equilibria of two phospholipids, 1,2-distearoyl-snglycero-3-phosphocholine (DSPC) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), in the most common protic ionic liquid, ethylammonium nitrate (EAN) have been investigated as function of composition and temperature by small- and wide-angle X-ray scattering (SAXS/WAXS) and smallangle neutron scattering (SANS). Findings: Both lipids form unusual self-assembly structures and show complex and unexpected phase behaviour unlike that seen in water; DSPC undergoes a gel Lb to crystalline Lc phase transition on warming, while POPC forms worm-like micelles L1 upon dilution. This surprising phase behaviour is attributed

引用

页码：276 / 281

页数：6

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