Methacrylate-containing silsesquioxane–siloxane oligomers with M w = (2–20) × 10 3 determined by gel permeation chromatography (GPC) are synthesized by acidohydrolytic copolycondensation of γ‑methacryloxypropyltrimethoxysilane and diorganodialkoxysilanes. According to the data of 29 Si NMR spectro-scopy, the molecules of these oligomers contain silsesquioxane units (RSiO 1.5 ) n , where R is a γ-methacryloxypropyl radical, and mixed cyclic structures of the (RSiO 1.5 ) m (R'R''SiO) p type, where R' is CH 3 and R'' is CH 3 or C 6 H 5 , with linear diorganosiloxane fragments added to them. The introduction of 6 wt % silsesquioxane–siloxane oligomers into a filled base dental compound based on a mixture of bismethacrylates increases its mechanical characteristics by more than a factor of 1.25–1.75 with a simultaneous substantial decrease in the polymerization shrinkage, water uptake, and water solubility.

Recent developments in the synthesis of phosphazene-based ligands (preparation of polyfunctional coordination ligands such as pyridyloxy-, pyrazolyl-, phenanthroline-, porphyrine-, carboxyl-, fluorene-, 1,1'-bis-2-naphthol-, coumarin-, and oxazoline-containing cyclophosphazenes as well as phosphazenes containing crown ether and spirocyclic groups) are reviewed. Coordination behavior, complex formation properties, and certain peculiar features of these ligands are described. Special attention is paid to their applications in science and technology.

The aim of the work was to prepare the films on base of beta-diketophosphazene and amines and to study their properties. The diketo-function-containing aryloxycyclotriphosphazene was synthesized by reaction of hexakis (4-chloromethylphenoxy)cyclotriphosphazene with sodium acetylacetonate. It has been established that the optimal solvent for this reaction is dimethylformamide. The chemical structure of the synthesized diketophosphazene was characterized by Fourier transform infrared spectroscopy (FTIR), H-1, C-13 and P-31 nuclear magnetic resonance (NMR) and MALDI-TOF mass-spectrometry. The synthesized diketophosphazene was used to obtain polymers, which were characterized by infrared spectroscopy. In addition, all these polymers were used for films preparing, which were tested for hydrophobicity, heat resistance (TGA) and adhesion to glass. It was found that the obtained film, which were made using diketophosphazene and alpha,omega-bis(3-aminopropyl)oligodimethylsiloxane, demonstrates the best operational properties. This film is quite flexible, its decomposition temperature is 320 degrees C, adhesion value to glass is 1 by ISO 2409: 2007, and the contact angle is 101 degrees. The obtained films can be used in the form of metal complexes in the OLED technology.

Oligophosphazenes containing carboxy and polymerizable methacrylate groups were prepared by the reaction of hexa-p-carboxyphenoxycyclotriphosphazene with glycidyl methacrylate. Introduction of these oligomers in an amount of up to 10 wt % into methacrylate filling dental composites enhances their adhesion to tooth tissues and metals by a factor of 5–7 and the compression strength by 20–30%.