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学者姓名：王国强
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Abstract ：
Oxychloride phosphors that contain active ions coordinated with both oxygen and chloride ions have garnered significant attention, but the application of oxychloride phosphors is yet limited because of their demanding synthesis condition of vacuum or reducing atmosphere. Herein, we synthesize a new serial oxychlorides of La 9 W 6 O 30 Cl (LWOC) and Er 3+ /Yb 3+ , Ho 3+ /Yb 3+ , Tm 3+ /Yb 3+ doped LWOC through molten salt shielding method (MSS) in air, which is more efficient compared to the traditional method in vacuum. The compound of LWOC crystallizes in the tetragonal system space group P 4 2 / nmc (No. 137) with cell parameters a = b = 10.0445 (1) & Aring;, c = 12.6826(4) & Aring;, V = 1279.57(5) & Aring; 3 and Z = 11. The asymmetric unit of LWOC includes three La atoms, one unique W atom, two disordered W atoms with occupancy factors of 0.16(5) and 0.84(5), respectively, one Cl atom and six O atoms. Under the excitation of 980 nm laser, all the Er 3+ /Yb 3+ , Ho 3+ /Yb 3+ and Tm 3+ /Yb 3+ codoped LWOC phosphors have excellent upconversion (UC) luminescence with bright visible light emission. A fluorescence intensity ratio (FIR) type temperature sensor is developed by using LWOC: Er 3+ , Yb 3+ phosphor as sensing media, which has a maximum relative temperature sensitivity ( S r ) of 0.90 % K -1 at 300 K.
Keyword ：
Molten salt shielding method Molten salt shielding method Optical temperature sensing Optical temperature sensing Oxychloride Oxychloride Upconversion luminescence Upconversion luminescence
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| GB/T 7714 | Wang, En-Ting , Yang, Junhan , Guo, Weiping et al. Molten salt shielding synthesis of Er 3+/Yb 3+co-doped La 9 W 6 O 30 Cl phosphors for optical temperature s ensing [J]. | JOURNAL OF LUMINESCENCE , 2024 , 271 . |
| MLA | Wang, En-Ting et al. "Molten salt shielding synthesis of Er 3+/Yb 3+co-doped La 9 W 6 O 30 Cl phosphors for optical temperature s ensing" . | JOURNAL OF LUMINESCENCE 271 (2024) . |
| APA | Wang, En-Ting , Yang, Junhan , Guo, Weiping , Liu, Qingyi , Zhang, Qi , Zhang, Wei et al. Molten salt shielding synthesis of Er 3+/Yb 3+co-doped La 9 W 6 O 30 Cl phosphors for optical temperature s ensing . | JOURNAL OF LUMINESCENCE , 2024 , 271 . |
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Abstract ：
Optical temperature sensing technology, especially the fluorescence intensity ratio (FIR) type sensor based on Er3+, Yb3+ co-doped up-conversion (UC) luminescent materials, presents numerous opportunities in the field of temperature detection. Various Er3+, Yb3+ co-doped fluorides and oxides have been explored for the application of temperature sensing. Most of these Er3+, Yb3+ co-doped sensing materials are phosphors, for which the high temperature phase and chemical stability is still challenging. The Er3+, Yb3+ co-doped oxide single crystal is a promising solution to explore temperature sensing materials with practical application ability. In this work, an Er3+, Yb3+ co-doped LaBMoO6 single crystal (LBMO-SC: Er3+, Yb3+) is grown through flux assisted spontaneous crystal growth technology. Compared with the Er3+, Yb3+ co-doped LaBMoO6 polycrystalline samples (LBMO-PC: Er3+, Yb3+), the LBMO-SC: Er3+, Yb3+ shows improved UC performance with enhanced light emission and prolonged luminescence lifetime. The UC performance improvement results from the more efficient energy transfer between Yb3+ and Er3+. The energy transfer efficiency from Yb3+ to Er3+ in the LBMO-PC: Er3+, Yb3+ powders sintered at 1000 degrees C for 15 h is 7.3%, while it is 29.7% in the LBMO-SC: Er3+, Yb3+. The strong UC luminescence of LBMO-SC: Er3+, Yb3+ extends the temperature detection range; the luminescence of S-4(3/2) -> I-4(15/2) in LBMO-SC: Er3+, Yb3+ is still measurable even when the temperature reaches 570 K. The LBMO-SC: Er3+, Yb3+ has a maximum value of relative temperature sensitivity of 1.16% K-1 at 300 K. Finally, an optical fiber type temperature sensor with practical application capability is successfully fabricated by using LBMO-SC: Er3+, Yb3+ as the luminescence sensing medium.
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| GB/T 7714 | Li, Xinxu , Bao, Bingting , He, Xinyu et al. Optical temperature sensing with an Er3+, Yb3+ co-doped LaBMoO6 single crystal [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2023 , 11 (7) : 2494-2504 . |
| MLA | Li, Xinxu et al. "Optical temperature sensing with an Er3+, Yb3+ co-doped LaBMoO6 single crystal" . | JOURNAL OF MATERIALS CHEMISTRY C 11 . 7 (2023) : 2494-2504 . |
| APA | Li, Xinxu , Bao, Bingting , He, Xinyu , Wang, Guoqiang , Huang, Yantang , Li, Lingyun et al. Optical temperature sensing with an Er3+, Yb3+ co-doped LaBMoO6 single crystal . | JOURNAL OF MATERIALS CHEMISTRY C , 2023 , 11 (7) , 2494-2504 . |
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Abstract ：
The Er3+ doped double perovskite Ba2CaWO6 crystal is a promising ratiometric thermometer based on the fluorescence intensity ratio (FIR) of transitions from H-2(11/2) and S-4(3/2) to the lowered I-4(15/2) level. However, the Ca2+ vacancy defect caused by the charge difference between rare-earth ions and the substituted alkaline-earth ions gives rise to the non-radiative probability and limits the thermal sensitivity. Here, the up-conversion luminescence and thermometric performance of Er3+, Yb3+ doped Ba2CaWO6 are tuned by tri-doping with alkaline ions. The Ca2+ vacancy defect can be eliminated by the introduction of Na+, which occupies the Ca2+ site when it is doped into Ba2CaWO6 with Er3+ and Yb3+. On the contrary, the doping of Cs+ into Ba2CaWO6 with Er3+ and Yb3+ enhances the defect concentration because it occupies the site of Ba2+. Thus, the tri-doping of Na+ reduces the non-radiative probability and enhances the quantum efficiency of Er3+, leading to the improvement of the thermometric sensitivity of Ba2CaWO6. As a result, we get an excellent thermometric Ba2CaWO6:8%Yb3+,3.5%Er3+,6%Na+ powder with a luminescence lifetime of 515 ms and maximum thermal sensitivity (S-r) of 1.45%/K, which is more than three times higher than that of the BCWO:Er3+ powder. (c) 2022 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
Keyword ：
Ba2CaWO6 Ba2CaWO6 Double perovskite Double perovskite Er3+ Er3+ Optical thermometry Optical thermometry Rare earths Rare earths Up-conversion luminescence Up-conversion luminescence
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| GB/T 7714 | Li, Lingyun , Zhou, Ziwei , Huang, Fazheng et al. Improving luminescence and thermometric performance of Ba2CaWO6:Er3+ by tri-doping with Yb3+ and Na+ [J]. | JOURNAL OF RARE EARTHS , 2023 , 41 (1) : 42-50 . |
| MLA | Li, Lingyun et al. "Improving luminescence and thermometric performance of Ba2CaWO6:Er3+ by tri-doping with Yb3+ and Na+" . | JOURNAL OF RARE EARTHS 41 . 1 (2023) : 42-50 . |
| APA | Li, Lingyun , Zhou, Ziwei , Huang, Fazheng , Peng, Senlin , Huang, Yantang , Wang, Guoqiang et al. Improving luminescence and thermometric performance of Ba2CaWO6:Er3+ by tri-doping with Yb3+ and Na+ . | JOURNAL OF RARE EARTHS , 2023 , 41 (1) , 42-50 . |
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Abstract ：
The Er3+doped double perovskite Ba2CaWO6 crystal is a promising ratiometric thermometer based on the fluorescence intensity ratio(FIR)of transitions from 2H11/2 and 4S3/2 to the lowered 4I15/2 level.However,the Ca2+vacancy defect caused by the charge difference between rare-earth ions and the substituted alkaline-earth ions gives rise to the non-radiative probability and limits the thermal sensi-tivity.Here,the up-conversion luminescence and thermometric performance of Er3+,Yb3+doped Ba2CaWO6 are tuned by tri-doping with alkaline ions.The Ca2+vacancy defect can be eliminated by the introduction of Na+,which occupies the Ca2+site when it is doped into Ba2CaWO6 with Er3+and Yb3+.On the contrary,the doping of Cs+into Ba2CaWO6 with Er3+and Yb3+enhances the defect concentration because it occupies the site of Ba2+.Thus,the tri-doping of Na+reduces the non-radiative probability and enhances the quantum efficiency of Er3+,leading to the improvement of the thermometric sensitivity of Ba2CaWO6.As a result,we get an excellent thermometric Ba2CaWO6:8％Yb3+,3.5％Er3+,6％Na+powder with a luminescence lifetime of 515 us and maximum thermal sensitivity(Sr)of 1.45％/K,which is more than three times higher than that of the BCWO∶Er3+powder.
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| GB/T 7714 | Lingyun Li , Ziwei Zhou , Fazheng Huang et al. Improving luminescence and thermometric performance of Ba2CaWO6∶Er3+by tri-doping with Yb3+and Na+ [J]. | 稀土学报（英文版） , 2023 , 41 (1) : 42-50 . |
| MLA | Lingyun Li et al. "Improving luminescence and thermometric performance of Ba2CaWO6∶Er3+by tri-doping with Yb3+and Na+" . | 稀土学报（英文版） 41 . 1 (2023) : 42-50 . |
| APA | Lingyun Li , Ziwei Zhou , Fazheng Huang , Senlin Peng , Yantang Huang , Guoqiang Wang et al. Improving luminescence and thermometric performance of Ba2CaWO6∶Er3+by tri-doping with Yb3+and Na+ . | 稀土学报（英文版） , 2023 , 41 (1) , 42-50 . |
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Semiconductor conductivities depend largely on the crystal structures and the associated electronic structures. If the electronic structures can be switched reversibly in the same crystal structure, then a drastic conductivity change may be controllable. The effect of electron transfer (ET) on semiconductor conductivity remained elusive so far. In this work, a series of two pillared inorganicorganic hybrid photochromic semiconductors (PSCs), [(CQ)Pb3X6(H2O)]center dot 2H(2)O [X = Cl (1) and Br (2), CQ= N-4,4'-bipyridiniopropionate (viologen)], with II-stacking viologen pi-aggregates, are constructed by a bottom-up self-assembly strategy through inorganic skeleton-directed intercalation and intermolecular noncovalent interaction. The conductivities are abnormally "invariant" after photoinduced ET, breaking the convention that the generation of radicals favors conductivity. The abnormally "invariant" conductivities are mainly derived from approximate electronic couplings before and after ET between II-stacking viologen pi-aggregates.
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| GB/T 7714 | Wang, Peng-Hao , Liu, Bin-Wen , Wang, Guo-Qiang et al. Photochromic Semiconductors: Bottom-Up Strategy to Construct Type II-Stacking Viologen pi-Aggregates [J]. | INORGANIC CHEMISTRY , 2022 , 61 (43) : 17196-17201 . |
| MLA | Wang, Peng-Hao et al. "Photochromic Semiconductors: Bottom-Up Strategy to Construct Type II-Stacking Viologen pi-Aggregates" . | INORGANIC CHEMISTRY 61 . 43 (2022) : 17196-17201 . |
| APA | Wang, Peng-Hao , Liu, Bin-Wen , Wang, Guo-Qiang , Sun, Cai . Photochromic Semiconductors: Bottom-Up Strategy to Construct Type II-Stacking Viologen pi-Aggregates . | INORGANIC CHEMISTRY , 2022 , 61 (43) , 17196-17201 . |
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Multi-wavelength lasers, especially the triple-wavelength laser around 1060 nm, could be produced by the F-4(3/2) -> I-4(11/2) transition of Nd3+ and present numerous challenges and opportunities in the field of optoelectronics. The Nd3+-doped high-temperature phase of LaBSiO5 (beta-LBSO) is an ideal crystal to produce triple-wavelength lasers; however, the crystal growth is challenging because of the phase transition from beta-LBSO to low-temperature phase (alpha-LBSO) at 162 degrees C. This phase transition is successfully suppressed when the doping content of Nd3+ is larger than 6.3 at. %, and the Nd3+-doped beta-LBSO is stable at room temperature. The local disorder of BO4 tetrahedra due to Nd3+ doping is essential to the stabilization of beta-LBSO. For the first time, the beta-LBSO:8%Nd3+ crystal with a dimension of 1.8 x 1.8 x 1.8 cm(3) is obtained through the top-seeded solution method. The crystal shows strong optical absorption in the range of 785-815 nm, matching well with the commercial laser diode pumping source. The optical emission of F-4(3/2) -> I-4(11/2) splits into four peaks with the highest optical emission cross section of 2.14 x 10(-20) cm(2) at 1068 nm. The continuous-wave triple-wavelength generation of coherent light at 1047, 1071, and 1092 nm is achieved with the highest output power of 235 mW and efficiency of 12.1%.
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| GB/T 7714 | Li, Lingyun , Huang, Fazheng , Shi, Yi et al. Triple-Wavelength Lasing with a Stabilized beta-LaBSiO5:Nd3+ Crystal [J]. | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2022 . |
| MLA | Li, Lingyun et al. "Triple-Wavelength Lasing with a Stabilized beta-LaBSiO5:Nd3+ Crystal" . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022) . |
| APA | Li, Lingyun , Huang, Fazheng , Shi, Yi , Luo, Zhong-Zhen , Wang, Guo-Qiang , Li, Xin-Xiong et al. Triple-Wavelength Lasing with a Stabilized beta-LaBSiO5:Nd3+ Crystal . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2022 . |
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The exploration of a dual-functional sensor is the key to effectively detect the Cr(VI) and Fe(III) cations in water, which is important to human health and environmental sustainability. Because of the phase stability and excellent luminescence, the rare-earth coordination polymers have great potential as dual-functional sensors. Here, we develop a Y0.91Eu0.09(H2O)(2){C6H3(CO2)(3)}(MIL-92(Y):9%Eu3+)-based dual-function luminescent sensor on Cr(VI) and Fe(III), which exhibits excellent phase stability and dispersibility in water. The luminescence of MIL-92(Y):9%Eu3+ aqueous suspension quenches on Fe3+ with Stern-Volmer constant K-sv of 1.79 x 10(3) M-1 and limit of detection of 17 mu M. The MIL-92(Y):9%Eu3+ aqueous suspension also has turn-off sensing ability towards Cr2O72- and CrO42- with K-sv yalues of 3.5 x 10(3) and 6.14 x 10(3) M-1, respectively. It has detection limitations of 10 and 5 mu M on Cr2O72- and Cr(2)O(7)(2-)ions, respectively.
Keyword ：
Cr(VI) Cr(VI) dual-function detection dual-function detection Fe(III) Fe(III) luminescence sensing luminescence sensing MIL-92 MIL-92
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| GB/T 7714 | Huang, Fazheng , Li, Xinhao , Zhang, Zhen et al. An Ultra-stable Eu3+ Doped Yttrium Coordination Polymer with Dual-function Sensing for Cr(VI) and Fe(III) Ions in Aqueous Solution [J]. | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2022 , 41 (4) : 2204068-, . |
| MLA | Huang, Fazheng et al. "An Ultra-stable Eu3+ Doped Yttrium Coordination Polymer with Dual-function Sensing for Cr(VI) and Fe(III) Ions in Aqueous Solution" . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY 41 . 4 (2022) : 2204068-, . |
| APA | Huang, Fazheng , Li, Xinhao , Zhang, Zhen , Jiang, Ziqi , Wang, Guoqiang , Li, Lingyun et al. An Ultra-stable Eu3+ Doped Yttrium Coordination Polymer with Dual-function Sensing for Cr(VI) and Fe(III) Ions in Aqueous Solution . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2022 , 41 (4) , 2204068-, . |
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A tetratellurium-substituted heteropolyoxoniobate with the formula K2H[Cu(phen)(H2O)](4)[Cu(phen)](2)[(LiNb8Te4O40)]center dot 34H(2)O (1; phen = 1,10-phenanthroline) was hydrothermally prepared and structurally characterized. The compound represents the first hexavalent tellurium-substituted Keggin-type polyoxometalate (POM) so far. What is more, the POM cluster in 1 can elaborately self-assemble into a stable supramolecular framework with an ion conduction property through unique intermolecular pi-pi stacking.
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| GB/T 7714 | Wu, Ping-Xin , Lai, Rong-Da , Ge, Rui et al. A Tellurium-Substituted Heteropolyniobate with Unique pi-pi Stacking and Ionic Conduction Property [J]. | INORGANIC CHEMISTRY , 2021 , 60 (9) : 6162-6166 . |
| MLA | Wu, Ping-Xin et al. "A Tellurium-Substituted Heteropolyniobate with Unique pi-pi Stacking and Ionic Conduction Property" . | INORGANIC CHEMISTRY 60 . 9 (2021) : 6162-6166 . |
| APA | Wu, Ping-Xin , Lai, Rong-Da , Ge, Rui , Sun, Cai , Wang, Guo-Qiang , Li, Xin-Xiong et al. A Tellurium-Substituted Heteropolyniobate with Unique pi-pi Stacking and Ionic Conduction Property . | INORGANIC CHEMISTRY , 2021 , 60 (9) , 6162-6166 . |
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Two novel nickel cluster substituted polyoxometalates (POMs), H7Na19(H2O)(26){Ni-12(OH)(9)(PO4)(4)(A-alpha-SiW9O34)(W4O10(OH)(PO2(OH)(2))(2)(A-alpha-SiW9O34)(2))}center dot 4C(2)H(8)N center dot 27H(2)O (1) and H26.6K2.5Na(H2O)(16)(Ni-6(OH) (BO3)(2)(dien)(2)(B-alpha-SiM10O37)(2)](2)center dot 24H(2)O (2) (dien = diethylenetriamine), have been successfully prepared. 1 is a Ni-12-substituted POM comprised of a novel (Ni-12(OH)(9)(PO4)(4)) core, an A-alpha-(SiW9O34) unit and an uncommon (W4O10(OH)(9)O-7(OH)(2))(7 )(A-alpha-SiW9O34)(2)) fragment. 2 is a Nib-substituted sandwich-type POM constructed from two B-alpha-(SiW10O37) units and an unusual boat-like (Ni-6(OH)(BO3)(2)(dien)(2)} cluster. Photocatalytic study reveals that 2 shows a moderate catalytic activity in visible-light-driven CO2 reduction reactions. Additionally, the magnetic behaviors and the proton conduction performances of the compounds were investigated.
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| GB/T 7714 | Chen, Yi , Guo, Zheng-Wei , Chen, Ya-Peng et al. Two novel nickel cluster substituted polyoxometalates: syntheses, structures and their photocatalytic activities, magnetic behaviors, and proton conduction properties [J]. | INORGANIC CHEMISTRY FRONTIERS , 2021 , 8 (5) : 1303-1311 . |
| MLA | Chen, Yi et al. "Two novel nickel cluster substituted polyoxometalates: syntheses, structures and their photocatalytic activities, magnetic behaviors, and proton conduction properties" . | INORGANIC CHEMISTRY FRONTIERS 8 . 5 (2021) : 1303-1311 . |
| APA | Chen, Yi , Guo, Zheng-Wei , Chen, Ya-Peng , Zhuang, Zan-Yong , Wang, Guo-Qiang , Li, Xin-Xiong et al. Two novel nickel cluster substituted polyoxometalates: syntheses, structures and their photocatalytic activities, magnetic behaviors, and proton conduction properties . | INORGANIC CHEMISTRY FRONTIERS , 2021 , 8 (5) , 1303-1311 . |
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A series of POM-based all-inorganic open frameworks, H-9[Ln(9)W(8)(mu(4)-O)(12)(mu(2)-O)(24)(H2O)(24)](SiW12O40)(3)center dot 60H(2)O (1-Ln, Ln = La, Pr and Nd), have been fabricated and structurally characterized for the first time. The unique architectures are constructed from nanoscale four-shellLn@W-8@Ln(8)@(SiW12)(6)clusters. Additionally, the porous nature of the frameworks has also been investigated.
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| GB/T 7714 | Liu, Jin-Hua , Lin, Li-Dan , Wang, Guo-Qiang et al. All-inorganic open frameworks based on gigantic four-shellLn@W-8@Ln(8)@(SiW12)(6)clusters [J]. | CHEMICAL COMMUNICATIONS , 2020 , 56 (71) : 10305-10308 . |
| MLA | Liu, Jin-Hua et al. "All-inorganic open frameworks based on gigantic four-shellLn@W-8@Ln(8)@(SiW12)(6)clusters" . | CHEMICAL COMMUNICATIONS 56 . 71 (2020) : 10305-10308 . |
| APA | Liu, Jin-Hua , Lin, Li-Dan , Wang, Guo-Qiang , Li, Ling-Yun , Sun, Yan-Qiong , Li, Xin-Xiong et al. All-inorganic open frameworks based on gigantic four-shellLn@W-8@Ln(8)@(SiW12)(6)clusters . | CHEMICAL COMMUNICATIONS , 2020 , 56 (71) , 10305-10308 . |
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