A5063835209- Luminescence Properties of Advanced Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Perovskite Materials and Applications
- Solid State Laser Technologies
- Crystallography and molecular interactions
- Radiation Detection and Scintillator Technologies
- Lanthanide and Transition Metal Complexes
- Magnetism in coordination complexes
- Microwave Dielectric Ceramics Synthesis
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence and Fluorescent Materials
- Glass properties and applications
- Gas Sensing Nanomaterials and Sensors
- Thermal Expansion and Ionic Conductivity
- Metal complexes synthesis and properties
- Optical properties and cooling technologies in crystalline materials
- Advanced Photocatalysis Techniques
- Advanced Fiber Laser Technologies
- Solid-state spectroscopy and crystallography
- Photorefractive and Nonlinear Optics
- Crystal Structures and Properties
- Ammonia Synthesis and Nitrogen Reduction
- Inorganic Fluorides and Related Compounds
- Inorganic Chemistry and Materials
Jiangxi University of Science and Technology
2015-2024
Hunan Rare Earth Metal Material Research Institute
2023-2024
Institute of Molecular Functional Materials
2021
Ganzhou People's Hospital
2015-2020
Baotou Research Institute of Rare Earths
2020
First Affiliated Hospital Zhejiang University
2017
Fujian Institute of Research on the Structure of Matter
2004-2010
Chinese Academy of Sciences
2004-2010
State Key Laboratory of Structural Chemistry
2010
Jiangxi University of Technology
2010
Abstract Rare earth (RE 3+ )-doped phosphors generally suffer from thermal quenching, in which their photoluminescence (PL) intensities decrease at high temperatures. Herein, we report a class of unique two-dimensional negative-thermal-expansion phosphor Sc 2 (MoO 4 ) 3 :Yb/Er. By virtue the reduced distances between sensitizers and emitters as well confined energy migration with increasing temperature, 45-fold enhancement green upconversion (UC) luminescence 450-fold near-infrared...
Abstract Rare earth luminescent materials based on negative thermal expansion (NTE) have achieved thermally enhanced photoluminescence, but these typically exhibit relatively weak luminescence intensity at room temperature. In this work, adopting the cationic heterovalent substitution strategy, a series of Sc 2‐2x Zr x Nb W 3‐1.5x O 12‐3x :Yb/Er (SZNWO :Yb/Er) phosphors are prepared by solid‐state reaction. With increase value, 3+ 4+ /Nb 5+ leads to decrease in local symmetry Er . Compared...
By utilizing the proportional relationship between excitation and absorption spectra for some special excited multiplets of rare-earth (RE) ions that are followed by a very fast nonradiative relaxation to monitored level, we propose new approach determine Judd-Ofelt (JO) intensity parameters crucial evaluation laser luminescent materials via spectra. To validate this approach, JO NaGd(WO(4))(2) : Er(3+) YLiF(4) Nd(3+) crystals calculated compared through both The derived from in good...
Reversible SCSC transformations of three Gd<sup>III</sup> MOFs derived from two dicarboxylates have been successfully realized and they exhibit significant MCEs.
Hydrothermal reactions of Gd<sub>2</sub>O<sub>3</sub> and two tricarboxylates generated carboxylate-bridged 2D/3D Gd<sup>III</sup> coordination polymers with large magnetocaloric effects.
Thermal quenching (TQ) is still a critical challenge for lanthanide (Ln3+)-doped luminescent materials. Herein, we report the novel negative thermal expansion nonhygroscopic phosphor ZrSc(WO4)2PO4:Yb3+/Er3+. Upon excitation with 980 nm laser, simultaneous enhancement realized on upconversion (UC) and downshifting (DS) emissions from room temperature to 573 K. In situ temperature-dependent X-ray diffraction photoluminescence dynamics are used reveal luminescence mechanism in detail. The...
The thermally enhanced luminescence mechanism of Al 2 (WO 4 ) :Yb/Er with low thermal expansion is revealed. High sensitivity optical thermometry realized via the difference in red/green temperature response.
A new family of 3d-4f heterometallic trinuclear complexes, namely [M2LnL2]·2ClO4·H2O (H3L = tris(((2-hydroxy-3-methoxybenzy1)amino)ethyl)amine, where M Ni, Ln Gd (1), Dy (2), and Zn, (3), (4)) were synthesized via the reaction H3L Ln(NO3)3·6H2O Ni(ClO4)2·6H2O or Zn(ClO4)2·6H2O in a 2 : 1 ratio solution. Complexes 1-4 consisted three metal ions arranged an isosceles triangle manner. Magnetic properties investigations showed that complexes exhibited weak ferromagnetic coupling between Ni(ii)...
The hydrothermal reaction of CrO3, Gd2O3 and iminodiacetic acid (H2IDA) yields a three-dimensional (3D) two-fold interpenetrated complex [CrGd(IDA)2(C2O4)]∞ (1). oxalate anions were generated in situ under conditions. Magnetic studies suggest the presence weak antiferromagnetic coupling between CrIII GdIII ions, negligible GdIII⋯GdIII CrIII⋯CrIII couplings. Complex 1 exhibits large magnetocaloric effect with − ΔSmaxm = 39.86 J kg−1 K−1 (the mass aspect) 93.69 mJ cm−3 volumetric aspect),...
Three chain-based Gd<sup>III</sup>complexes based on three types of multidentate O ligands have been successfully constructed<italic>via</italic>hydro/solvothermal reactions. They exhibit good thermal stabilities and large magnetic entropy changes.
Mutual sensitized luminescence of Mn<sup>4+</sup>–Er<sup>3+</sup>are realized<italic>via</italic>different excitation in Gd<sub>2</sub>ZnTiO<sub>6</sub>:Mn<sup>4+</sup>/Er<sup>3+</sup>phosphors. The upconversion from Er<sup>3+</sup>to Mn<sup>4+</sup>is first observed under 980 nm excitation. downshift Mn<sup>4+</sup>to Er<sup>3+</sup>is 335 nm.
A family of chiral 3d–4f heterometallic complexes, namely, [Zn2Ln(R,R-L)2(H2O)4](ClO4)3) [Ln = Dy (1), Tb (3)], [Zn2Ln(S,S-L)2(H2O)4](ClO4)3 (2), (4)], [Zn2Ln2(R,R-L)2(CO3)2(NO3)2]·2CH3OH (5), (7)], and [Zn2Ln2(S,S-L)2(CO3)2(NO3)2]·2CH3OH (6), (8)] {H2L cyclohexane-1,2-diylbis(azanediyl)bis(methylene)bis(2-methoxyphenol)}, has been synthesized characterized. Crystal structure analysis reveals that complexes 1–4 are isostructural trinuclear clusters crystallized in space group C2221, 5–8...
SWO:Tb/Eu phosphors with negative thermal expansion demonstrate simultaneous luminescent color tuning and optical temperature sensor implementation. Water molecules bring about a change in behavior energy transfer efficiency.
Two Gd<sup>III</sup> complexes with 1D/3D structures exhibit weak magnetic interactions and large magnetocaloric effects (−Δ<italic>S</italic>maxm > 37.0 J kg<sup>−1</sup> K<sup>−1</sup>).
Temperature dependence of the green UC luminescence spectra NGW:Yb<sup>3+</sup>/Er<sup>3+</sup> phosphor under 980 nm excitation (the are normalized to emission peak at 554 nm. The power density is 3 W cm<sup>−2</sup>).