POLYMER-INORGANIC NANOCOMPOSITE MATERIALS BASED ON POLYMETHYLMETHACRYLATE WITH ADJUSTABLE PHOTOLUMINESCENCE SPECTRUM

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to polymer-inorganic composite materials based on polymethylmethacrylate and nanoparticles of solid ZrO₂ solutions with lanthanides, selected from Eu, Tb and Tm. Such nanocomposites are intended for application in optics and optoelectronics, in particular can be applied as preparations for control and control of fluorimeters and spectrofluorimeters, as well as sensors of ultraviolet radiation. Described is polymer-inorganic nanocomposite material based on polymethylmethacrylate, including 0.9-5 wt % of covalently bound nanoparticles of zirconium dioxide, containing ions of rare earth elements Eu³⁺ or Tb³⁺, or Tm³⁺ in amount 0.1-1 mol. % by any of elements or mixture of zirconium dioxide nanoparticles, containing ions of rare earth elements Eu³⁺ or Tb³⁺, or Tm³⁺ in amount 0.1-1 mol. %. Nanocomposites are obtained by either copolymerisation of methylmethacrylate with surface-functionalised ZrO₂, nanoparticles, doped with Eu₂O₃, or ZrO₂, doped with Tb₂O₃, or ZrO₂, doped with Tm₂O₃, as well as with their combinations, in solution or mass, either mixing already ready PMMA systems - ZrO₂(Eu₂O₃), PMMA - ZrO₂(Tb₂O₃) and PMMA - ZrO₂(Tm₂O₃).;EFFECT: material possesses adjustable spectrum of photoluminescence, realised due to variation of content and composition of covalently bound luminescing ZrO₂(Ln₂O₃) nanoparticles in PMMA matrix, as well as due to selection of exciting light wavelength.;2 cl, 6 dwg, 3 tbl, 3 ex