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We present several recently synthesized nanocomposites consisting of liquidcrystals as well as an organic molecular crystal embedded into the nanochannelsof mesoporous alumina and silica. As liquid-crystalline mesogens achiral,nematogen and chiral cholesteric guest molecules infiltrated into nanochannelsby spontaneous imbibition were chosen. The molecular ordering inside thenanochannels, which can be tailored by modifying the surface anchoring, wascharacterized by optical polarimetry (linear and/or circular birefringence) incombination with X-ray diffraction. For the synthesis of the solid crystallinenanocomposites ferroelectric triglycine sulfate (TGS) nanocrystals weredeposited into the nanochannels by slow evaporation of saturated watersolutions imbibed into the porous hosts. Their textural and physicochemicalproperties were explored by x-ray diffraction, scanning electron microscopy anddielectric techniques.

Mesoporous alumina- and silica-based crystalline nanocomposites with tailored anisotropy: methodology, structure and properties