Microemulsion as template

The regiospecificity of electrophilic aromatic substitution reactions can also be controlled by use of the oil-water interface of a microemulsion as template for the aromatic moiety. Bromination of two phenols and two anisoles has been carried out in a cationic... 

Single-crystal PbSC>4 (anglesite) nanorods were prepared by Xiang et al. [50] by using a water/hexane/SDS/hexanol microemulsion as template. The effects of concentrations of reactants and surfactants and temperature variation on the formation were also studied. 

Besides the above-described nanomaterial systems, various other types of nanoparticles have been reported using w/o microemulsions as templates suggesting the versatility of the microheterogeneous systems in synthesising nanocompounds. Typical examples of such preparations are described below. 

Bicontinuous microemulsions as templates 11.2.1 Why use bicontinuous microemulsions as templates ... 

The synthesis of nanoparticles is one of the most promising potential applications of these new systems. Zhao et al. used benzene/TX-100/[bmim][BF4] microemulsions as template for the synthesis of silica nanoparticles xmder both basic and acidic conditions (Zhao et al., 2009). Herein, ellipsoidal nanoparticles have been obtained under acidic conditions, while hollow silica spheres were formed under alkaline conditions. 

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