Synthesis and characterization of the novel color-tunable Eu/Tb(BPA)₃phen composites

Abstract

The new color-tunable luminescent Eu/Tb(BPA)3phen composites have been successfully fabricated by the solvothermal reactions. The characterization of the final products have been investigated by field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis (TG-DSC) and Ultraviolet and visible (UV-Vis) spectrophotometer. It is found that the geometry of the composite particles is regular by scanning electron microscopy image. Thermogravimetric analysis indicates that the initial decomposition temperature of the final products is 334 °C, approximately. The results demonstrate that Eu/Tb(BPA)3phen composites have excellent thermal stability. And the products after decomposition are stable oxides (Eu2O3 and Tb2O3). Furthermore, Eu and Tb ions complexes exhibit strong red and green luminescence, respectively. Emitting color of physically blended Eu(BPA)3phen and Tb(BPA)3phen composites can be tuned in a wide range from red to yellow to green under the excitation of 350 nm single-wavelength ultraviolet light. The CIE coordinates of CTb, C1, C2, C3, C4, C5, C6 and CEu are calculated as (0.24, 0.60), (0.31, 0.56), (0.33, 0.55), (0.38, 0.52), (0.40, 0.51), (0.43, 0.48), (0.54, 0.41) and (0.65, 0.34), respectively. The color-tunable luminescent materials can be widely applications in many fields, such as the optical and electronic devices, fluorescent probe and labels.

A Review on Optical Applications, Prospects, and Challenges of Rare-Earth Oxides

“…126 The hydrothermally fabricated Eu/Tb (Bisphenol A) 3 phen nanocomposites had demonstrated a remarkable thermal stability up to 334 °C. 24 The stable Eu/ Tb 2 O 3 also exhibited color spectra under the influence of an ultraviolet irradiance (350 nm). The heat tolerance and cophotoluminescence color adjustability of the REOs, therefore, underscore the potential applications in optoelectronic probes.…”

“…The synthetic Eu 2 O 3 nanoparticles were proven effective as an illuminating label for an atrazine detection . The hydrothermally fabricated Eu/Tb (Bisphenol A) 3 phen nanocomposites had demonstrated a remarkable thermal stability up to 334 °C . The stable Eu/Tb 2 O 3 also exhibited color spectra under the influence of an ultraviolet irradiance (350 nm).…”

“…16 Also, successful optomodifications were done via REOs, which is a recent addition in the domain of fiber optics. 17−19 Even the photocatalytic behavior, 20,21 thermal imaging, 22,23 optical probe, 24 plasma display panel, 25 etc. sectors were vastly improved by the incorporation of REOs in recent years.…”

“…Moreover, improved lattice strains brought new functional behaviors for REOs, which opens an opportunity for manufacturing innovative optoelectronic devices . Also, successful opto-modifications were done via REOs, which is a recent addition in the domain of fiber optics. − Even the photocatalytic behavior, , thermal imaging, , optical probe, plasma display panel, etc. sectors were vastly improved by the incorporation of REOs in recent years.…”