Synthesis and characterization of Gd2O3: Er3+, Yb3+doped with Mg2+, Li+ions-effect on the photoluminescence and biological applications.
Izabela KamińskaAleksandra WosztylPrzemysław KowalikBożena SikoraTomasz WojciechowskiKamil SobczakRoman MinikayevKarolina ZajdelMichał ChojnackiWojciech ZaleszczykKatarzyna ŁysiakWojciech PaszkowiczJacek SzczytkoMałgorzata Frontczak-BaniewiczWit StryczniewiczKrzysztof FroncPublished in: Nanotechnology (2021)
Gd2O3:1% Er3+, 18% Yb3+,x% Mg2+(x = 0; 2.5; 4; 5; 6; 8;10; 20; 25; 50) and Gd2O3:1% Er3+, 18% Yb3+, 2,5% Mg2+,y% Li+(y = 0.5-2.5) nanoparticles were synthesized by homogenous precipitation method and calcined at 900 °C for 3 h in air atmosphere. Powder x-ray diffraction, scanning electron microscopy, cathodoluminescence, transmission electron microscopy, energy dispersive x-ray spectroscopy and photoluminescence techniques were employed to characterize the obtained nanoparticles. We observed a 8-fold increase in red luminescence for samples suspended in DMSO solution for 2.5% of Mg2+doping. The x-ray analysis shows that for the concentration of 2.5% Mg, the size of the crystallites in the NPs is the largest, which is mainly responsible for the increase in the intensity of the upconversion luminescence. But the addition of Li+ions did not improve the luminescence of the upconversion due to decreasing of crystallites size of the NPs. Synthesized nanomaterials with very effective upconverting luminescence, can act as luminescent markers inin vivoimaging. The cytotoxicity of the nanoparticles was evaluated on the 4T1 cell line for the first time.
Keyphrases
- electron microscopy
- energy transfer
- quantum dots
- sensitive detection
- solid state
- ion batteries
- breast cancer cells
- endoplasmic reticulum
- estrogen receptor
- high resolution
- oxide nanoparticles
- computed tomography
- photodynamic therapy
- gas chromatography mass spectrometry
- walled carbon nanotubes
- magnetic resonance
- magnetic resonance imaging
- light emitting
- high intensity