Was synthesized two copper ( II ) complexes and one nickel complex of N-benzylidene-aniline derivatives and their ligands. We have performed polarized FTJIR spectroscopy and X-ray diffraction measurements in wide temperature range ( 0-220°C ) in order to establish correlation's among molecular, crystal and mesophase structures. We provided comparison of the FTIR and X -ray diffractometry results between well known metallo -organic copper ( II ) complexes, which crystallizes in the monoclinic space group C2/c, with similar nickel complex. Investigated ligands and their metallo -mesogens are displaying the same sequence of the liquid crystalline phases -only with higher melting temperature for metallo -complexes
Recently photonic crystals with a three -dimensional ordered structure with periodicity of the optical wavelength have attracted attention from both fundamental and practical points of view. The physics and applications of photonic crystals have been active topic of research now. The application of photonic crystals is to create tunable band gap materials especially in visible spectra region, where the gap could be controlled by an external parameter. We have studied transmission and linear dichroism spectra of synthetic opal, refractive index n=l,342, infiltrated with nematic liquid crystal with averaged refractive index n= 1,596 or with water n=l,30 and alcohol n=l,28. We demonstrating that the position of the stop band in the visible spectra is shifted by changing of refractive index of the infiltrated material or by changing the filling factor or by variation ofa incidence angle of light.
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