Molecular self-assembly, ionic liquids

CONTROL OF lONOPHILIC-IONOPHOBIC INTERACTIONS AND GENERALIZATION OF MOLECULAR SELF-ASSEMBLIES IN IONIC LIQUIDS... 

In summary, the formation of self-assemblies in ionic liquids is a general phenomenon that depends on the molecular structures of amphiphUes, ionic liquids, and their combinations. The ether-introduced ionic liquids facilitate the formation of molecular self-assemblies. However, stable self-assemblies can form also in conventional ionic liquids if the intermolecular interactions are suitably tuned. 

In this chapter we introduced molecular self-assembly, which is becoming growing research area in the chemistry of ionic liquids. Our own earlier reports [6, 35] had touched off a burst of research on molecular assembly in ionic liquids and ionogel formation. A cholesterol-based organogelator. Scheme 11.9, was shown to induce... 

The strategy of self-assembly could be applied to open up developments in molecular-based nanomaterials. We believe that the combination of ionic liquids and biomolecules, organic molecular self-assemblies and inorganic nanomaterials, can lead to new dimensions in materials science. 

Molecular imprinting can be accomplished in two ways (a), the self assembly approach and (b), the preorganisation approach3. The first involves host guest complexes produced from weak intermolecular interactions (such as ionic or hydrophobic interaction, hydrogen bonding) between the analyte molecule and the functional monomers. The self assembled complexes are spontaneously formed in the liquid phase and are sterically fixed by polymerisation. After extraction of the analyte, vacant recognition sites specific for the imprint are established. Monomers used for self assembly are methacrylic acid, vinylpyridine and dimethylamino methacrylate. 

Soft templates, usually molecules and molecular associations such as amines, thermolabile organic polymers, and surfactants, can be removed by heat treatment. In addition, vesicles, ionic liquids, self-assembled colloidal crystals, and air bubbles have been used for soft templating synthesis. 

The self-assembly of LC block molecules composed of two or more covalently bonded immiscible molecular parts including an ion-conductive moiety leads to the formation of well-defined nano-segregated structures such as layer and columnar structures [4,5,26,27,30]. These anisotropic structures formed for LC block molecules having PEO and ionic liquid moieties would be useful for the anisotropic transportation of ions. Moreover, we considered that the macroscopic orientation of the nano-segregated LC structures plays a key role in the enhancement of the conductivities because the boundary in randomly oriented polydomains disturbs the anisotropic transportation of ions. 

These self-assembled liquid crystal structures are formed by specific inter-molecular interactions, in particular, hydrogen bonding and ionic interactions (see Chapter 1, Section 1.3). One of the earliest examples of a supramolecular... 

It is established that the molecular assembly in ionic liquids is governed by (i) the balance of ionophilicity and ionophobicity of constituent molecules and (ii) the chemical structure of the ionic liquids. The formation of ordered self-assemblies in ionic liquids [120] has touched off the subsequent... 

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