Amphiphilicity determines nanostructure in protic ionic liquids

被引：268
|
作者：
Hayes, Robert [1 ]
Imberti, Silvia [2 ]
Warr, Gregory G. [3 ]
Atkin, Rob [1 ]
机构：
[1] Univ Newcastle, Ctr Organ Elect, Callaghan, NSW 2308, Australia
[2] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England
[3] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 08期
关键词：
HYDROGEN-BONDED INTERACTIONS; ETHYLAMMONIUM NITRATE; PROPYLAMMONIUM NITRATE; NONIONIC SURFACTANT; MICELLE FORMATION; SOLVATION FORCES; PHASE-BEHAVIOR; CRITICAL-POINT; SPONGE PHASES; MOLTEN-SALT;
D O I：
10.1039/c0cp01137a
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：
The bulk structure of the two oldest ionic liquids (ILs), ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN), is elucidated using neutron diffraction. The spectra were modelled using empirical potential structure refinement (EPSR). The results demonstrate that EAN exhibits a long-range structure of solvophobic origin, similar to a bicontinuous microemulsion or disordered L-3-sponge phase, but with a domain size of only 1 nm. The alcohol (-OH) moiety in EtAN interferes with solvophobic association between cation alkyl chains resulting in small clusters of ions, rather than an extended network.
引用
收藏
页码：3237 / 3247
页数：11
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