The Application of Nematic Liquid Crystals as Anisotropic Solvents inthe Optical Absorption Spectroscopy for the Determination of the Polarization of Electronic Transitions of Organic Molecules and Cu(II) - Complexes

Nematic liquid crystals are well suited as anisotropic solvents in the optical absorption spectroscopy. They make it possible to determine the band polarizations of solute molecules by linear dichroism measurements. With homogeneously aligned nematic phases the investigation can be performed by polarized light, with homeotropic layers by natural light. With the nematic phases used (N9, ZLI 612/Merck) a wavelength range down to c. 325 nm can be achieved.