Nanocomposites and nanomaterials 

Synthesis and luminescent properties of heterometallic polycomplexes 
I.A. Savchenko1, A.S. Berezhnytska2, Trunova O.K.2 
1 National Taras Shevchenko University of Kyiv,
60, Volodymyrska str., 01601 Kyiv, Ukraine
E-mail: iras@univ.kiev.ua
2 V.I.Vernadsky Institute of General and Inorganic Chemistry NASU
32/34 Palladina prosp., 03680 Kiev, Ukraine

Unique luminescence features of trivalent lanthanide (LnIII) ions — sharp characteristic emission in the visible and near-infrared spectral regions, exceptional color purity, long luminescence lifetimes, high quantum yield and large Stokes shifts—afford them as promising electroluminescent materials [1-2]. For a long time, the only way to increase the intensity of the emission intensity of Ln (III) complexes was to find organic ligands that would effectively sensitize the ionic luminescence of metals. However, taking into account the unsaturation of the coordination sphere in β-dicarbonyls Ln (III), it is possible to obtain such complex systems as heterometallic complexes.
 The heterometallic β-dicarbonyl complexes were synthesized. Polycomplexes on their basis were obtained in two ways: by radical homopolymerization of heterometallic monomeric complexes and copolymerization of two monometallic complexes. The complexes were fully characterized using FTIR, elemental and thermal analyses. Absorption, diffuse reflectance and fluorescence emission spectra for the complexes were recorded. The relationship between complex structure and the intensity of fluorescence emission was established. 

1. Y. Tan, Z. Zhao, L. Shang, Y. Liu, C. Wei, J. Li, et al. A novel bipolar D–π–A type phenanthroimidazole/carbazole hybrid material for high efficiency nondoped deep-blue organic light-emitting diodes with NTSC CIEy and low efficiency roll-off. // J. Mater. Chem. C . – 2017.- 5. - 11901-11909.
2. A. İncel, M. Emirdag-Eanes, C. D. McMillen, M. M. Demir. Integration of Triboluminescent EuD4TEA Crystals to Transparent Polymers: Impact Sensor Application. // ACS Appl. Mater. Interfaces.- 2017.- 9.- 6488−6496.