研究目的
To study the lanthanide ion luminescence as a function of their environment in polymer-inorganic composites for better understanding of the electron energy transfer processes in a condensed state and to develop materials promising for optics and medicine.
研究成果
The study demonstrated the feasibility of creating soluble and insoluble composites based on PMMA with luminescent ZrO2:LnO1.5 nanoparticles, showing that the polymerization conditions and composite structure significantly influence the photoluminescence properties. The materials developed have potential applications in optics and medicine, particularly for luminescent visualization.
研究不足
The study focuses on the luminescence properties of lanthanide ions in polymer-inorganic composites but does not extensively explore the mechanical properties or potential biomedical applications beyond luminescence visualization.
1：Experimental Design and Method Selection:
Hydrothermal synthesis of ZrO2-LnO1.5 nanoparticles, surface functionalization with vinyl groups using 3-(trimethoxysilyl)propyl methacrylate, and radical polymerization in solution and bulk to synthesize soluble and cross-linked composites based on poly(methyl methacrylate).
2：5 nanoparticles, surface functionalization with vinyl groups using 3-(trimethoxysilyl)propyl methacrylate, and radical polymerization in solution and bulk to synthesize soluble and cross-linked composites based on poly(methyl methacrylate). Sample Selection and Data Sources:
2. Sample Selection and Data Sources: ZrO2-LnO1.5 nanoparticles synthesized by co-precipitation and hydrothermal treatment, modified with TMSPM, and used in polymerization with MMA.
3：5 nanoparticles synthesized by co-precipitation and hydrothermal treatment, modified with TMSPM, and used in polymerization with MMA. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: JEM-2100F microscope, Rigaku SmartLab diffractometer, TG 209 F1 Iris thermogravimetric analyzer, AVANCE 400 NMR Fourier spectrometer, SUPRA 55VP SEM, LS-100 BASE luminescence spectrophotometer.
4：Experimental Procedures and Operational Workflow:
Synthesis of nanoparticles, surface modification, polymerization in solution and bulk, characterization of molecular weight, thermal stability, microhardness, and photoluminescence properties.
5：Data Analysis Methods:
XRD for phase composition, TEM for nanoparticle size and shape, TG for thermal stability, SEM for nanoparticle distribution, PL spectroscopy for luminescence properties.
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JEM-2100F
JEM-2100F
Jeol
Transmission electron microscopy for determining the size, shape, phase and chemical compositions of synthesized nanoparticles.
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Rigaku SmartLab
SmartLab
Rigaku
Powder X-ray diffraction for determining the crystallite size and phase composition of nanoparticles.
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AVANCE 400 NMR Fourier spectrometer
AVANCE 400
Bruker
Solid-state NMR spectroscopy for investigating the efficiency of surface modification and the nature of the interaction of nanoparticles with an organosilicon compound.
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SUPRA 55VP
SUPRA 55VP
Carl Zeiss AG
Field emission-scanning electron microscopy for determining the aggregation degree and distribution uniformity of nanoparticles in the composite.
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TG 209 F1 Iris
TG 209 F1 Iris
Netzsch
Thermogravimetric analysis for studying the thermal stability and destruction behavior of composites.
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LS-100 BASE luminescence spectrophotometer
LS-100 BASE
PTI Lasers INC
Recording PL emission and excitation spectra, as well as PL lifetimes of composites.
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