Crystal growth, spectral properties and Judd-Ofelt analysis of Pr3+:LaMgAl11O19

Fan, Huixin; Yan, Tao; Ju, Lin; Peng, Guang; Wang, Jing; Boughton, Robert I.; Ye, Ning

doi:10.1016/j.jallcom.2018.07.197

Cited by 21 publications

(2 citation statements)

References 49 publications

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“…Since R c > 9.4 Å of the unit cell length, the energy transfer for the Tb 3+ ions can be ascribed to multipole-multipole interactions. For the case of Pr 3+ doped samples, the theoretical emission bands should be found at 487, 530, 604, 620, 648, 706, and 728 nm for the emission of 3 P 0 -3 H 4 , 3 P 0,1 -3 H 5 , 1 D 2 -3 H 4 , 3 P 0 -3 H 6 , 3 P 0 -3 F 2 , 1 D 2 -3 H 5 , and 3 P 0 -3 F 3 + 3 F 4 , respectively [87]. In our Pr 3+ doped samples, although most of the theoretical emission peaks could also be observed (Figure S22), no separated peaks could be found, which could be ascribed to the internal energy transitions resulted from of thermally induced expansion of emission cross section of Pr 3+ according to Judd-Ofelt theory [88].…”

Section: %mentioning

confidence: 93%

Pourbaix-Guided Mineralization and Site-Selective Photoluminescence Properties of Rare Earth Substituted B-Type Carbonated Hydroxyapatite Nanocrystals

Liu

Yuan

et al. 2021

Molecules

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Rare-earth labeling in biological apatite could provide critical information for the pathologic transition (osteoclastic) and physiologic regeneration (osteogenesis) of bone and teeth because of their characteristic site-sensitive fluorescence in different coordinative conditions of various tissues in many biological processes. However, the rare-earth labeling method for biological apatites, i.e., carbonated-hydroxyapatite, has been rarely found in the literature. In this paper, we report a Pourbaix-diagram guided mineralizing strategy to controllable carbonation and doping of rare-earth ions in the hydroxyapatite (HA) lattice. The carbonation process of hydroxyapatite was achieved by controllable mineralization in hydrothermal condition with K2CO3 as the carbonate source, which results into the pure B-type carbonated hydroxyapatite (CHA) with tunable carbonate substitution degree. All of the as-synthesized materials crystalized into P63/m (No. 176) space group with the lattice parameter of a decreases and c increases with the increasing of carbonate content in the reactants. Structural refinement results revealed that the substitution of planar CO32− is superimposed on one of the faces of PO43− tetrahedral sub-units with a rotation angle of 30° in reference to c-axis. All of the hydrothermally synthesized CHA nanocrystals show hexagonal rod-like morphology with the length of 70–110 nm and diameter of 21–35 nm, and the decreasing length/diameter ratio from 3.61 to 2.96 from low to high carbonated level of the samples. Five rare-earth cations, of Pr3+, Sm3+, Eu3+, Tb3+, and Ho3+, were used as possible probe ions that can be doped into either HA or CHA lattice. The site-preference of Tb3+ doping is the same in the crystallographic site of HA and CHA according to characteristic emission peaks of 5D4–7Fj (j = 3–6) transitions in their photoluminescent spectroscopy. Our work provides a controllable carbonation method for rare-earth labeling hydroxyapatite nanomaterials with potential biologically active implant powders for bone repair and tissue regeneration.

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Section: %mentioning

confidence: 93%

Pourbaix-Guided Mineralization and Site-Selective Photoluminescence Properties of Rare Earth Substituted B-Type Carbonated Hydroxyapatite Nanocrystals

Liu

Yuan

et al. 2021

Molecules

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“…Generally, the experimental oscillator strength includes an electric-dipole contribution and magnetic-dipole contribution that are the defined theoretical oscillator strength ( f cal ). The theoretical oscillator of the electric-dipole transition ( f cal ed ) from the initial state ⟨(S, L)J⟩ to the final state ⟨(S′, L′)J′⟩ can be calculated as where n is the refractive index, h (6.6260755 × 10 –27 erg s) is Planck’s constant, λ is the wavelength of the transition, J and J ′ are the total angular momentum of the initial level and terminal level, respectively. ⟨4 f N ( S , L ) J | U ( t ) |4 f N ( S ′, L ′) J ′⟩ is the reduced matrix element insensitive to the matrix environment.…”

Section: Common Nir-emitting Activators With Intrinsic Electron Trans...mentioning

confidence: 99%

Advances in Near-Infrared Luminescent Materials without Cr³⁺: Crystal Structure Design, Luminescence Properties, and Applications

et al. 2021

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Near-infrared (NIR) luminescent materials are attracting much attention as the promising applications in food composition analysis, night vision, biosensors, and so on. Besides Cr3+ ions, other ions such as Eu2+, Ce3+, and Bi3+, etc. recently also exhibit remarkable broadband NIR light emission in inorganic hosts. The key issues are to optimize their photoluminescence quantum yield and reveal an unclear “structure-luminescence” relationship. Herein, photoluminescence properties of NIR luminescent materials without Cr3+ are systematically summarized. Importantly, we propose a significant influence of local crystal structure on NIR luminescence properties. These strategies contain (i) ligand covalency, (ii) strong crystal field and distorted lattice, (iii) selective sites occupation, and (iv) mixed valences and doping level control. The proposed “structure-luminescence” relationship can provide a new insight into exploit NIR luminescent materials and optimize current luminescent materials. Furthermore, the concept of “high-throughput DFT prediction-crystal structure design-photoluminescence performances optimization” is summarized to swiftly develop targeted NIR luminescent materials. Subsequently, energy transfer strategies and application prospects are summarized in detail. This review discusses the relationship between crystal structure and NIR light emission based on a high-throughput method. The proposed concept can offer a guidance to exploit a series of novel NIR luminescent materials and clarify underlying luminescence mechanisms.

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The bulk crystal growth and yellow–orange spectral performances of Pr3+: BaF2 and Pr3+/RE3+(RE3+ = Gd3+, Y3+, Lu3+, Ce3+): BaF2 crystals

Le,

Zheng,

Wang

et al. 2024

J Mater Sci: Mater Electron

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Crystal growth, spectral properties and Judd-Ofelt analysis of Pr3+:LaMgAl11O19

Cited by 21 publications

References 49 publications

Pourbaix-Guided Mineralization and Site-Selective Photoluminescence Properties of Rare Earth Substituted B-Type Carbonated Hydroxyapatite Nanocrystals

Pourbaix-Guided Mineralization and Site-Selective Photoluminescence Properties of Rare Earth Substituted B-Type Carbonated Hydroxyapatite Nanocrystals

Advances in Near-Infrared Luminescent Materials without Cr³⁺: Crystal Structure Design, Luminescence Properties, and Applications

The bulk crystal growth and yellow–orange spectral performances of Pr3+: BaF2 and Pr3+/RE3+(RE3+ = Gd3+, Y3+, Lu3+, Ce3+): BaF2 crystals

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Crystal growth, spectral properties and Judd-Ofelt analysis of Pr3+:LaMgAl11O19

Cited by 21 publications

References 49 publications

Pourbaix-Guided Mineralization and Site-Selective Photoluminescence Properties of Rare Earth Substituted B-Type Carbonated Hydroxyapatite Nanocrystals

Pourbaix-Guided Mineralization and Site-Selective Photoluminescence Properties of Rare Earth Substituted B-Type Carbonated Hydroxyapatite Nanocrystals

Advances in Near-Infrared Luminescent Materials without Cr3+: Crystal Structure Design, Luminescence Properties, and Applications

The bulk crystal growth and yellow–orange spectral performances of Pr3+: BaF2 and Pr3+/RE3+(RE3+ = Gd3+, Y3+, Lu3+, Ce3+): BaF2 crystals

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Advances in Near-Infrared Luminescent Materials without Cr³⁺: Crystal Structure Design, Luminescence Properties, and Applications