Abstract
Lanthanidomesogens can be defined as liquid-crystalline lanthanide complexes or lanthanide-containing liquid crystals. These compounds combine the unique properties of lanthanide ions (luminescence, paramagnetism) with those of liquid crystals (fluidity, anisotropy, response to electrical and magnetic fields). Lanthanidomesogens allow obtaining materials that emit linearly polarized light or that can be aligned by an external magnetic field. This Chapter gives a detailed discussion of the different classes of lanthanidomesogens, including Schiff’s base complexes, beta-diketonates, beta-enaminoketonates, bis(benzimidazolyl)pyridine complexes, phthalocyanines, porphyrins, lanthanide soaps, polyoxometalatate-surfactant complexes, ionic liquid-crystalline lanthanide complexes and lyotropic lanthanidomesogens. Also an overview of actinide-containing liquid crystals (actinidomesogens) is given. The reader is introduced to the different types of mesophases and to the experimental methods used for identification of these mesophases.
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