Pharmaceutically active supported ionic

Catalytically active supported ionic liquid membranes were used for propylene/propane vapor mixture separation. In this case, the ionic Hquid was immobilized in the pores of an asymmetric ceramic support, displaying sufficient permeability, good selectivity, and long-term stabUity [51]. Porous inorganic membranes were also used as a support for chiral-selective liquid membranes. For this purpose, porous tubular ceramic membranes were impregnated with 3-cyclodextrin polymer. Such SLMs were used for separation of enantiomers of racemic pharmaceutical chlorthahdone [52]. 

A novel application for ionic hquids in the preparation of functional materials has also served as a pre-immobilization strategy for a robust laccase electrode. In this case, the enzyme was first adsorbed to an ioiuc liquid-functionalized cellulose acetate that was then incorporated into a carbon paste electrode. The approach served to produce a device with acceptable levels of accuracy for methyldopa determination in pharmaceutical samples. In a similar manner, microencapsulation of laccase from T. versicolor in polyethylenimine (PEI) was demonstrated as a prior treatment for creating a coating on a paper support. Although first attempts showed a deleterious effect of PEI on laccase because of negative conformafional changes that reduced the activity of the encapsulated enzyme [28], optimized microencapsulation conditions resulted in superior stabihty compared with free enzyme [27]. 

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