期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 643, 期 -, 页码 276-281出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2023.03.161
关键词
LIPID self-assembly; Phospholipids; Ionic liquids; Small angle X-ray scattering; Small angle neutron scattering
The forces governing lipid self-assembly in ionic liquids are similar to water, but differences in their balance can lead to unexpected behavior. Experimental findings show that phospholipids in the protic ionic liquid ethylammonium nitrate exhibit unusual self-assembly structures and complex phase behavior different from that in water.
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
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