Nanocomposites and nanomaterials

Nanomaterials based on heterometalic complexes of 
 Nd(III) and Yb(III)
Ivakha N.B.1, Rohovtsov O.O.1, Berezhnytska O.S.1,2, Savchenko I.O.3, 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: s8nadezhda@ukr.net
2 National Technical University of Ukraine «Igor Sikorsky Kyiv PolytechnicInstitute»
3 National Taras Shevchenko University of Kyiv, 64/13, Volodymyrska Street, Kyiv, Ukraine, 01601
Modern science constantly demands new approaches to the creation of materials with given properties. One of the promising directions is the synthesis of heterometalic  compounds based on 3d- and 4f-elements, which combine the properties of different in nature metals. The application of metal polymers as precursors of functional materials avoids unwanted aggregation and crystallization processes, as is often the take place when creating films in the case of low molecular weight metal complexes.Now, one of the promising directions of modern chemical science is the obtaining and study of the properties of metal-based polymers on the basis of complex compounds of lanthanides. It has many advantages over low molecular weight metal complexes: thermal and chemical resistance, absence of aggregation, low cost. This opens up new opportunities for the application of such materials.
From the synthesized complexes by the method of radical polymerization, poly-hetero compounds were obtained.All monomeric and polymeric complexes were investigated by methods of IR spectroscopy, spectroscopy of diffuse reflection, differential thermal analysis, electron microscopy, comparing the physical and chemical characteristics of these compounds with previously investigated mono-metallic analogues.The formation of metal complexes is confirmed by the presence in the IR spectra of the bands of oscillations in the region 400-600cm-1. Bidetant-cyclic coordination of β-dicarbonyl ligands to metal ions has been established. In the SDR of heterometal complexes there is a set of bands corresponding to d-d and f-f transitions of metal ions. The electron microscopy method confirmed the nanosizedness of the resulting compounds. The luminescence characteristics of heterometal complexes were studied and the influence of the second metal on the intensity of luminescence was determined.