Nanocomposites and nanomaterials

Nanomaterials based on coordination compounds of lanthanides
Berezhnytska O.S.1,2, Fedorov Ya.V.1, Savchenko I.O.3, Rusakova N.V.4, Trunova O.K.1
1 V.I.Vernadsky Institute of General and Inorganic Chemistry of NAS of Ukraine Akad.Palladin Avenue, 32/34, Kyiv-03142, Ukraine
E-mail: olekberez@gmail.com 
2 National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», 37, Prosp. Peremohy, Kyiv, Ukraine, 03056
3 National Taras Shevchenko University of Kyiv, 64/13, Volodymyrska Street, Kyiv, Ukraine, 01601
4 A.V. Bogatsky Physico-Chemical Institute NASU, 86,  Lustdorf road, Odessa, 65000,Ukraine
The interest for coordination compounds with luminescent properties has both a fundamental and an applied aspect. The first is related with establishing the relationship between the composition, the structure and their properties, the other with the application of luminescent coordination compounds as precursors of electroluminescent materials in organic light-emitting diodes, luminescent labels in biology and analytical chemistry.
Lanthanide coordination polymer is an important class of organic-inorganic hybrid materials formed by the coordination of lanthanide ions with organic linkers.  Lanthanide coordination polymers are expected to open up new fields of research in materials science, coordination chemistry, polymer science, and advanced photonic engineering.
Preparation of materials includes synthesis of metal complexes with followed their polymerization or copolymerization with industrial monomers such as styrene vinylcarbazole or methylmethacrylate. The luminescence intensity of metalopolymers is several times higher than the integrated intensity of the luminescence of monomers.The electron diffraction pattern indicates the x-ray amorphism of the polymer, which further excludes the crystallization of the film. 
The increase of luminescence efficiency of metallopolymers compared with monomers is caused by the absence of water molecules in the nearest coordination environment of the lanthanide. The high intensity of the luminescence of polymer complex makes them promising precursors of optical materials for electroluminescent devices.