General Introduction -- Luminescence Properties of Thermostable Lanthanide Coordination Polymers with Intermolecular Interactions -- Chameleon Luminophore for a Wide Range Temperature-Sensor Composed of Lanthanide Coordination Polymers -- Characteristic Structures and Photophysical Properties of Nona-coordinated Eu(III) Complexes with Tridentate Phosphine Oxides -- Photophysical Properties of Lanthanide Complexes with Asymmetric Dodecahedron Structures -- Solvent-dependent Luminescence of Octa-coordinated Eu(III) Complexes -- Summary.