MATERIALS RESEARCH BULLETIN
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2024
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IF 5.3
Chenglin Gong,Lin Lin,Yingzhen Wu,Yanan Zhang,Zhuohong Feng,Zhezhe Wang,Yantang Huang,Zhiqiang Zheng
In this research, double perovskite quantum dots Cs 2 AgInCl 6 : Tb 3+ /Sm 3+ /Bi 3+ are synthesized employing a high-temperature thermal injection method. The temperature-dependent emission spectra and the fluorescence decay curves of samples show the quantum dots can be applied to dual-mode temperature sensing employing fluorescence intensity ratio technique (between 656 nm (Sm 3+ ) and 549 nm (Tb 3+ )) and fluorescence lifetime thermometry (549 nm (Tb 3+ )), achieving maximal relative sensitivities of 3.24%/K (351 K) and 0.68%/K (373 K), respectively. This study offers valuable insights into the temperature sensing capabilities of these quantum dots, which shows that these quantum dots are promising high-sensitivity dual-mode temperature sensing materials.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2015
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IF 1.766
Yuebo Hu,Renjun Dou,Jianbei Qiu
Upon excitation with a 980 nm laser diode (LD), the upconversion luminescence (UCL) properties of Tb 3 + /Ho 3 + /Yb 3 + tri-doped oxyfluoride silicate glasses were investigated. Five distinct emissions peaked at 489, 543, 584, 623 and 662 nm are simultaneously observed and are assigned to the electronic transitions of Tb 3 + : 5 D 4 → 7 F J (J = 6, 5, 4 and 3) and Ho 3 + : 5 F 5 → 5 I 8 , respectively. The effects of Tb 3 + and Yb 3 + concentrations on the emissions were studied. The log–log plots of the UCL intensity versus laser power show abnormal relations: the slopes are larger than those in previous reports, which could be attributed to the effect of intrinsic optical bistability (IOB) of Yb 3 + ions. In addition, the UC mechanisms were discussed in this work.
研究领域:
材料科学
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光学
✓ 已验证
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DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 10
·1099
·
IF 2.935
Qiuping Li
Ionogels refer to an emerging composite material made from the confinement of ionic liquids within some specific cross-linked network matrices. They have potential applications in areas such as electrochemical and optical-electric materials. Incorporation of lanthanide (Eu3+, Tb3+) complexes covalently functionalized multi-walled carbon nanotubes (MWCNTs) in ionogels provide new ideas to design and synthesize novel luminescent hybrid materials that have excellent characteristics of luminescence and ionic conductivity. Here, the multifunctional ionogels were synthesized by confining an ionic liquid and the rare earth functionalized MWCNTs in the cross-linked polymethyl methacrylate (PMMA) networks, resulting in a novel optical/electric multifunctional hybrid material. The SEM images and digital photographs suggest that the lanthanide functionalized MWCNTs are evenly dispersed in the hybrid matrices, thus leading to a certain transparency bulky gel. The resulting ionogels exhibit certain viscosity and flexibility, and display an intense red/green emission under UV-light irradiation. The intrinsic conductibility of the embedded ionic liquids and carbon nanotubes in conjunction with the outstanding photoluminescent properties of lanthanide complexes makes the soft hybrid gels a material with great potential and valuable application in the field of optical-electric materials.Keywords:lanthanide complex;ionic liquid;carbon nanotube;ionogel;composite materials;luminescence
研究领域:
材料科学
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光学材料
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Huining Huang,Tao Wang,Haifeng Zhou,Dapeng Huang,Yaqiang Wu,Guangjun Zhou,Jifan Hu,Jie Zhan
Novel green-emitting Yb 3+ and Tb 3+ co-doped LaNbO 4 particles were prepared through a facile sol-gel and combustion method. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermogravimetric and differential thermal analysis (TG-DTA), up-conversion luminescence (UCL) with different powers and varied concentrations, and luminescent lifetimes were employed to test the prepared samples. The XRD data exhibit that a sample with high crystallinity can be acquired at 1000 °C. FE-SEM images show homogeneous and spherical grains after Yb 3+ and Tb 3+ are co-doped in the LaNbO 4 samples. TG-DTA reveals that the LaNbO 4 synthetic process is accompanied by a temperature increase. In our work, we utilize a 980 nm laser to excite Yb 3+ ions to achieve the 2 F 7/2 → 2 F 5/2 transition, and the LaNbO 4 :Yb 3+ , Tb 3+ sample exhibits intense green emission. Luminescent spectra at different powers demonstrated the two-photon absorption process; meanwhile, the corresponding energy transfer mechanism from Yb 3+ to Tb 3+ and the emission of Tb 3+ under 980 nm laser excitation was described via an energy level diagram. Moreover, concentration-dependent up-conversion luminescent properties were systematically explored, and it was confirmed that LaNbO 4 :0.15Yb 3+ ,0.02Tb 3+ exhibits the strongest luminescent properties. In particular, as the content of Yb 3+ ions increases, the 5 D 4 → 7 F 6 transition quickly becomes stronger, resulting in the emitted color shifting from green to blue. Therefore, the emitted color can be tuned by adjusting the content of Yb 3+ ions. The excellent up-conversion emission properties of the obtained samples allow for their potential application in the fields of 3D display technologies and solid-state lasers.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Dan Zhao,Wen Liu,Ya-Nan Li,Rui-Juan Zhang,Li-Na Zhang
A modulated structure with symmetrical characteristic higher than three-dimensional is a fascinating crystallographic type, and it is randomly encountered by researchers. Herein, we prepared 0.1 mm level single crystals of Na3La(VO4)2 and determined its structure to be a (3 + 1)-dimensional modulated structure using the X-ray diffraction analysis method for single crystals. Its super space group was determined to be Pca21(0β0)000. On the other hand, we introduced Tb3+ into the Na3La(VO4)2 host lattice to fabricate phosphors Na3La1-x(VO4)2:xTb3+ and studied their photoluminescence properties. Interestingly, for the strong absorption of the Na3La(VO4)2 host lattice in the range of 200–400 nm, the traditional 330–385 nm light is unable to efficiently excite Tb3+ ions in the Na3La(VO4)2 host to generate luminescence of Tb3+. Instead, Na3La1–x(VO4)2:xTb3+ is suitable to be excited by 487 nm to generate emitting light at 543, 584, and 622 nm, due to Tb3+ characteristic 4f → 4f transitions of 5D4 → 7FJ (J = 5, 4, 3). Hence, the Tb3+-doped Na3La(VO4)2 phosphors have potential applications for white-light-emitting diodes.
研究领域:
材料科学
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晶体学
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光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 47
·16772-16781
·
IF 6.4
Fei Xie,Dongxun Chen,Yi Zhang,Xulong Lv,Xin Chen,Kangning Sun,Yanjie Liang
Scintillator-based X-ray detection and imaging have demonstrated significant potential in the domains of industrial safety inspection and medical diagnosis. However, developing X-ray detectors capable of effectively imaging three-dimensional objects with highly curved surfaces and irregular shapes remains a persistent challenge. In this study, we present the controllable synthesis and X-ray excited persistent luminescence properties of KLu3F10:Tb3+ (KLF:Tb) nanocrystals (NCs) through a hydrothermal reaction, which can serve as highly sensitive nanoscintillators for flat-panel-free, high-resolution, and three-dimensional X-ray detection and imaging technologies. The detection limit of the X-ray dose rate of the prepared KLF:Tb NCs is determined to be 0.094 μGy s−1, significantly below the required dose rate for X-ray diagnostics (5.5 μGy s−1). Flexible scintillator films with varying thicknesses have been fabricated using the drop-casting technique, exhibiting a high spatial resolution of 10.1 lp mm−1@MTF = 0.2 at a thickness of 146.3 μm. It is demonstrated that the KLF:Tb-based scintillator screen enables high-quality X-ray imaging of diverse objects, including electronic devices and 3D curved objects. The imaging of ultra-long coils (∼20 cm) has also been successfully realized by utilizing the extended luminescence features of the KLF:Tb NCs. Overall, the high physicochemical and colloidal stability and exceptional scintillation performance of the as-synthesized KLF:Tb NCs open opportunities for flexible applications in X-ray detection and imaging as well as other daily applications.
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DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2023
·Vol. 20
·期 6
·3357-3364
·
IF 2.1
Chen Jiang,Rui Zhang,Lidan Han,Yanhui Chen
Persistent luminescence (PersL) phosphors are considered as promising candidates for the next generation of information storage medium. Mg 4 Ga 4 Ge 3 O 16 (MGG) is an electron trapping material which exhibits defect luminescence, and the luminescent properties are easily tuned via doping various activated ions. In this work, undoped and Mn 2+ /Pr 3+ /Tb 3+ single-doped MGG phosphors were synthesized via high temperature solid phase reactions. X-ray diffraction and scanning electron microscope results confirm that the activated ions tend to occupy Mg 2+ sites. Excited at 265 nm, the MGG host exhibits a defect emission band peaked at 450 nm. Red, pink and green emissions are observed in the Mn 2+ /Pr 3+ /Tb 3+ single-doped MGG samples, which are ascribed to the Mn 2+ : 4 T 1 (G) → 6 A 1 (S), Pr 3+ : 1 D 2 → 3 H 4 and Tb 3+ : 5 D 4 → 7 F 5 transitions, respectively. All the samples exhibit bright PersL for minutes after the cessation of excitation. The energy transfer, concentration quenching, luminescence decay and afterglow mechanisms are also discussed in detail. The phosphors exhibit efficient thermal and optical stimuli response, showing great potentials in the optical information storage.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Yuan Wang,DouDou Zhang,Hao song,Xiuxia Yang,Zhichao Liu,Yuankang Wang,Jie Yu,Xu Tian
X-ray scintillators are crucial for medical, industrial, and security imaging systems. However, achieving dual-mode of real-time and delayed imaging within a single matrix still faces challenges. Herein, LiGa 5 O 8 : Tb 3+ was successfully synthesized by the high-temperature solid-phase method. By controlling the atmosphere and optimizing the Li + /Ga 3+ ratio, the trap structure of LiGa 5 O 8 : Tb 3+ spinel phosphors is effectively adjusted, which achieved excellent dual-mode imaging. The air-synthesized Li 1.6 Ga 5 O 8 :4 %Tb 3+ exhibits intense X-ray excited persistent luminescence (X-PersL, 595 nm), while the sample of LiGa 5 O 8 :Tb 3+ reduced in H 2 /N 2 shows enhanced radioluminescence (RL) without X-PersL. This precise manipulation of anti-occupancy defects controls the charge trapping/detrapping dynamics, enabling switchable RL (real-time imaging) and X-PersL (delayed imaging) modes through the single Tb 3+ ions emission. The result resolves the incompatibility between prompt and persistent X-ray responses in conventional scintillators. The defect-regulation method establishes a universal strategy for developing scintillators compatible with complex operational demands, advancing high-performance X-ray imaging technologies.
研究领域:
材料科学
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生物医学工程
·
影像学
·
辐射探测
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无机功能材料
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jiaxiang Liu,Wenqi Song,Huizhe Niu,Ying Lu,Haiyan Yang,Wentao Li,Yu-zhen Zhao,Zongcheng Miao
In order to facilitate the practical application of circularly polarized luminescence (CPL) active molecules, the CPL brightness (BCPL) must be optimized. We have applied a binary modular strategy to synthesize two chiral organo-Tb3+ complexes, [Tb(Coum)3(1R,2R-Ph-PyBox)] (2) and [Tb(Coum)3(1S,2S-Ph-PyBox)] (5), combining 3-acetyl-4-hydroxy-coumarin (Coum) and enantiopure 2,6-bis(4-phenyl-2-oxazolin-2-yl) pyridine (1R,2R/1S,2S-Ph-PyBox). The photophysical properties of these novel complexes have been fully characterized. The combined point-chiral induction capability of chiral bis(oxazoline) derivatives and the outstanding photophysical properties of the coumarin-derived ligand have resulted in an intense excited-state chiroptical activity (|glum| = 0.097–0.103) for both Tb3+ enantiomers, with a bright Tb3+-centered high-purity green emission (ΦPL = 74%) and enhanced antenna-centered absorption behavior (ε320 nm = 47820–47940 M–1 cm–1). A superior BCPL (1132.7–1205.8 M–1 cm–1 at 5D4 → 7F5) has been established for complexes 2 and 5. The strategy adopted in this work provides a new route to chiroptical organo-Tb3+ luminophores with outstanding comprehensive performance.
研究领域:
化学
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材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2022
·
IF 0.847
Jian-Chao SHI,Hao WANG,Rui-Juan ZHANG,Dan ZHAO
ABSTRACT Composite borate-phosphate compounds have always attracted much attention for their structure diversity and interesting properties. In this work, a new borate-phosphate CsNa 2 Lu 2 (BO 3 )(PO 4 ) 2 (CNLBP) was found for the first time and its structure was characterized by single-crystal X-ray diffraction method. It crystallizes in orthorhombic system , space group Cmcm with a = 6.8750(5), b = 14.6919(1), c = 10.5581(7) Å, V = 1066.44(1) Å 3 , Z = 4, M r = 777.58, D c = 4.843 g/cm 3 , F (000) = 1368, µ (Mo Kα ) = 22.20 mm −1 , R ( F 2 > 2σ( F 2 )) = 0.0173 and wR ( F 2 ) = 0.0367. The structure of CNLBP features a chain framework of [Lu 2 (BO 3 )(PO 4 ) 2 ] ∞ that delimits 1D tunnels filled by Na + and Cs + ions. Phosphors CNLBP: x Tb ( x = 0, 0.1, 0.2, 0.4, 0.6, 0.8, 1.0) were prepared, and it can emit bright green light under near-UV excitation due to the 5 D 4 → 7 F j (j = 6, 5, 4, 3) transition of Tb 3+ . Due to the large separation of Lu 3+ ions in CNLBP structure lattice, the optimal concentration of Tb 3+ is 80%, and concentration quenching occurs only for the full Tb 3+ concentration.
研究领域:
材料科学
·
晶体学
·
光学
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2020
·Vol. 7
·期 3
·036201
·
IF 1.929
Hui Yu,Xinan Shi,Lijian Huang,Xiaojiao Kang,Daocheng Pan
A series of Eu3+ and Tb3+ co-doped CaMoO4/SrMoO4 luminescent thin films were prepared by a facile solution method, and they were annealed at 550 °C for 2 h. The luminescent properties of the thin films were studied, which involve the energy transfer from Tb3+ to Eu3+. The emission color can be changed from green to red, with increasing Eu3+ doping concentration in Tb3+-doped CaMoO4/SrMoO4 thin films. In addition, it was observed that the PL intensity of Eu3+ will enhance when Tb3+ ions are incorporated into Eu3+-doped CaMoO4/SrMoO4 thin films. The optical band gaps of the luminescent thin films are found to be in the range of 4.49 to 4.72 eV. These results revealed that Eu3+ and Tb3+ co-doped CaMoO4/SrMoO4 luminescent thin films have a significantly potential application in electroluminescent devices.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Min Zhang,Miao Qiu,Zengkun Li,Rui Xu,Yao Wang,Wei Wang,Christopher D. Snow,Matt J. Kipper,Laurence A. Belfiore,Jianguo Tang
Protein crystals have advantageous properties as framework materials, such as porosity and organized, high-density functional groups with the potential for guest specificity. Thus, protein crystal materials open up vast opportunities for fluorescent species doping and drug sensing. In this work, we explore this frontier by combining two lanthanide complexes with hen egg white lysozyme (HEWL) and directly obtaining co deposited structures in one step using an anti-solvent method different from the previous two-step method. Cross-linking of the protein was achieved using glutaraldehyde, ensuring the stability of the assembly in diverse solvent environments. The use of glutaraldehyde achieved protein cross-linking, ensuring the stability of the components in various solvent environments, including no leakage of fluorescent substances in ultrapure water and anhydrous ethanol. Differential fluorescence quenching effects of amino acids on the two doped luminescent complexes were observed. Introduction of amino acids, varying in concentration and type, resulted in distinct fluorescence enhancement or quenching effects on the protein assembly loaded with the complexes, and the detection results are reflected through different fitting equations and parameters. By exploring the application of this hybrid material for amino acid detection, this work lays the groundwork for broader applications.
研究领域:
生物化学
·
材料科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）