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Journal of Rare Earths 2023年第1期41卷 85-90页

作者： Jun Chen Weizhi Kou Shunsheng He Chenlan Lin Xin Wang lianshe fu Ting-Hai Yang Jiangsu Laboratory of Precious Metals Processing Technology and Application School of Chemistry&Environmental EngineeringJiangsu University of TechnologyChangzhou 213001China Department of Physics CICECO-Aveiro Institute of MaterialsUniversity of Aveiro3810-193AveiroPortugal

In the present work,we prepared three isostructural lanthanide(Ln) coordination polymers(CPs).namely [Ln(Hhpc)(phen)(NO_(3))](Ln=Gd(1),La(2),Y(3),H_(3)hpc=5-hydroxy-1 H-pyrazole-3-carboxyIic acid,phen=1,10-phenanthroline) by hydrothermal method.Their structures were characterized by single crystal X-ray diffraction,Fourier transform infrared spectrum,elemental analysis,powder X-ray diffraction and thermal gravimetric analysis.CPs 1-3 are isostrutural and exhibit two-dimensional(2 D)wavy layered structure constructed from inorganic chains,in which equivalent eight coordinated Ln^(3+) ions are linked through carboxylate groups.The three dimensional supramolecular structure is further formed by hydrogen bonding.The photocatalytic experiments show that CPs 2 and 3 exhibit good photocatalytic performances under visible light in degradation of methylene blue organic dye.The photocatalytic degradation efficiencies in 90 min are about 86.19% and 93.60% for CPs 2 and 3,respectively.The photocatalytic degradation mechanisms have been proposed through photoelectrochemical and trapping radical experiments.

关键词： Lanthanides Coordination polymers Photocatalytic degradation Pyrazole carboxylic acid Rare earths

Preparation,luminescence and photofunctional performances of a hybrid layered gadolinium-europium hydroxide

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Journal of Rare Earths 2022年第9期40卷 1437-1444,I0004页

作者： Lu Liu Jingjie Yu Shikao Shi Jiye Wang Huihua Song Ruikang Zhang lianshe fu Hebei Key Laboratory of Inorganic Nanomaterials College of Chemistry and Materials ScienceHebei Normal UniversityShijiazhuang 050024China Department of Physics CICECO–Aveiro Institute of MaterialsUniversity of Aveiro3810-193AveiroPortugal

The design and fabrication of rare earth ions incorporated into the inorganic/organic hybrid materials have attracted growing attention for seeking improved optical properties and photofunctional performances.In this paper,a novel hybrid composite based on the layered rare earth hydroxides was successfully prepared by the ion-exchange and intercalation chemical process.The rare earth elements in the composite contain gadolinium(Gd)and europium(Eu)and the molar ratio of Gd to Eu is kept constant at 1.9:0.1.Organic sodium dodecyl sulfonate and dye coumarin-3-carboxyllc acid are simultaneously incorporated into the layered rare earth hydroxides as supporting agent and light-harvesting antenna,respectively.The resulting hybrid layered rare earth hydroxides exhibit the enlarged interlayer distance with about 2.60 nm,and the chemical composition was confirmed through X-ray diffraction,carbon,hydrogen and nitrogen(CHN)elemental analysis,infrared spectroscopy,and thermogravimetric analysis.The layered solid compound shows the characteristic red emission corresponding to the^(5)D_(0)→^(7)F_(2)transition of Eu^(3+)ion,and the luminescence intensity of the optimized compound is greatly enhanced as compared to its corresponding nitrate and the hybrid composite without the introduction of dye molecule.The hybrid layered rare earth hydroxides can be exfoliated into bright colloidal solution,which show superior recognition capability to Cu^(2+)ion with the distinct luminescence quenching.The large quenching constant(1.4×10^(4)L/mol)and low detection limit(0.35μmol/L)are achieved for Cu^(2+)ion,implying a"turn-off"fluorescent sensor for Cu^(2+)detection.Moreover,a transparent film was prepared based on the colloidal solution and displays the typical red emission in folded shape.The new hybrid compound with enhanced luminescence and excellent photofunctional performances is expected to be applied in the fields of fluorescent sensing and flexible optical devices.

关键词： Layered rare earth hydroxides Luminescence Eu^(3+)ion Gd^(3+)ion Ion-exchange Intercalation chemistry

Ln3+(Ln=Eu,Dy)-doped Sr2CeO4 fine phosphor particles:Wet chemical preparation,energy transfer and tunable luminescence

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Journal of Rare Earths 2020年第12期38卷 1273-1280页

作者： Na Gao Yanfei Yang Shikao Shi Jiye Wang Shuping Wang Jibiao Li lianshe fu Key Laboratory of Inorganic Nanomaterials of Hebei Province College of Chemistry and Materials ScienceHebei Normal UniversityShijiazhuang 050024China Physics Department and CICECO-Aveiro Institute of Materials University of Aveiro3810-193AveiroPortugal

The Sr2 CeO4:Ln3+(Ln=Eu,Dy)fine phosphor particles were prepared by a facile wet chemical approach,in which the consecutive hydrothermal-combustion reaction was performed.The doping of Ln3+into Sr2 CeO4 has little influence on the structure of host,and the as-prepared samples display wellcrystallized spherical or elliptical shape with an average particle size at about 100-200 nm.For Eu3+ions-doped Sr2 CeO4,with the increase of Eu3+-doping concentration,the blue light emission band with the maximum at 468 nm originating from a Ce4+→O2-charge transfer of the host decreases obviously and the characteristic red light emission of Eu3+(5 D0→7 F2 transition at 618 nm)is enhanced gradually.Simultaneously,the fluorescent lifetime of the broadband emission of Sr2 CeO4 decreases with the doping of Eu3+,indicating an efficient energy transfer from the host to the doping Eu3+ions.The ene rgy transfer efficiency from the host to Eu3+was investigated in detail,and the emitting color of Sr2 CeO4:Eu3+can be easily tuned from blue to red by varying the doping concentration of Eu3+ions.Moreover,the luminescence of Dy3+-doped Sr2 CeO4 was also studied.Similar energy transfer pheno menon can be observed,and the incorporation of Dy3+into Sr2 CeO4 host leads to the characteristic emission of 4 F9/2→6 H15/2(488 nm,blue light)and 4 F9/2→6 H13/2(574 nm,yellow light)of Dy3+.The Sr2 CeO4:Ln3+fine particles with tunable luminescence are quite beneficial for its potential applications in the optoelectronic fields.

关键词： Wet chemistry preparation Sr2CeO4 Ln3+ion Phosphor Luminescence Energy transfer

Lanthanide-based downshifting layers tested in a solar car race

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Opto-Electronic Advances 2019年第6期2卷 1-8页

作者： Sandra F.H.Correia Ana R.N.Bastos lianshe fu Luís D.Carlos Paulo S.André Rute A.S.Ferreira Department of Physics and CICECO-Aveiro Institute of Materials University of Aveiro3810-193 AveiroPortugal Department of Electric and Computer Engineering and Instituto de Telecomunicacoes Instituto Superior TénicoUniversidade de Lisboa1049-001 LisbonPortugal Department of Electronics Telecommunications and InformaticsInstituto de TelecomunicacoesUniversity of AveiroCampus Universitário de Santiago3810-193 AveiroPortugal

The mismatch between the AM1.5G spectrum and the photovoltaic (PV) cells absorption is one of the most limiting factors for PV performance.To overcome this constraint through the enhancement of solar energy harvesting,luminescent downshifting (LDS) layers are very promising to shape the incident sunlight and,thus,we report here the use of Tb^3+- and Eu^3+-doped organic-inorganic hybrid materials as LDS layers on Si PV cells.Electrical measurements on the PV cell,done before and after the deposition of the LDS layers,confirm the positive effect of the coatings on the cell’s performance in the UV spectral region.The maximum delivered power and the maximum absolute external quantum efficiency increased 14% and 27%,respectively.Moreover,a solar powered car race was organized in which the small vehicle containing the coated PV cells presented a relative increase of 9% in the velocity,when compared to that with the uncoated one.

关键词： photovoltaics downshifting layers solar car organic-inorganic hybrids lanthanide ions

Preparation and Luminescence Properties of Terbium-Sal Complex In-situ Synthesized in Silica Matrix by a Two-Step Sol-Gel Process

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Journal of Materials Science & Technology 1999年第2期15卷 187-189页

作者： fu, lianshe Zhang, Hongjie Wang, Shubin Meng, Qingguo Shao, Hua Ni, Jiazuan Chinese Acad Sci Changchun Inst Appl Chem Lab Rare Earth Chem & Phys Changchun 130022 Peoples R China

In-situ synthesis of terbium complex with salicylic acid (Sal) in silica matrix was made by a two-step sol-gel process. The terbium complex with salicylic acid was formed in sol-gel derived silica gel, and confirmed by the luminescence excitation spectra and infrared (IR) spectra. As compared with the pure terbium complex powder, the silica gel containing terbium complex exhibits its characteristic emission and presents a longer fluorescence lifetime than that for the pure complex. The luminescence properties of the complex containing silica gel were investigated and compared with those of both terbium doped the silica gel and the pure complex powder. The reasons leading to the above results were also discussed. (Edited author abstract) 7 Refs.

关键词： Terbium

Preparation and Characterization of Ternary Europium ComplexDoped Thin SolGel Hybrid Film by Fluorescence Spectroscopy

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Chemical Research in Chinese Universities 1999年第2期15卷 8-12页

作者： fu lianshe ZHANG Hongjie WANG Shubin MENG Qingguo YANG Kuiyue NI Jiazuan Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022

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关键词： Rare earth complex Insitu synthesis Twostep solgel process Hybrid film Fluorescence spectroscopy process, Hybrid film, Fluorescence spectroscopy

Super modules-based active QR codes for smart trackability and IoT:a responsive-banknotes case study

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npj Flexible Electronics 2020年第1期4卷 93-101页

作者： João F.C.B.Ramalho Sandra F.H.Correia lianshe fu Lília M.S.Dias Pedro Adão Paulo Mateus Rute A.S.Ferreira Paulo S.André Department of Physics and CICECO-Aveiro Institute of Materials University of Aveiro3810-193 AveiroPortugal Department of Computer Science and Engineering and Instituto de Telecomunicações Instituto Superior TécnicoUniversidade de Lisboa1049-001 LisbonPortugal Department of Mathematics and Instituto de Telecomunicações Instituto Superior TécnicoUniversidade de Lisboa1049-001 LisbonPortugal Department of Electrical and Computer Engineering and Instituto de Telecomunicações Instituto Superior TécnicoUniversidade de Lisboa1049-001 LisbonPortugal

The general use of smartphones assigns additional relevance to QR codes as a privileged tool to the Internet of Things(IoT).Crucial for QR codes is the evolution to IoT-connected smart tags with enhanced storage capacity and secure accesses.Using the concept of super-modules(s-modules)built from adjacent spatial multiplexed modules with regular geometrical shapes,assisted by colour multiplexing,we modelled and design a single QR code with,at least,the triple storage capacity of an analogous size black/white QR code,acting as a smart-tag ensuring restrict access and trackability.The s-modules are printed using luminescent low-cost and eco-friendly inks based on organic-inorganic hybrids modified by lanthanides with multiplexed colour emission in the orthogonal RGB space.The access to the restrict information is attained only under UV irradiation and encrypted for secure transmission.The concept of active QR codes for smart trackability and IoT was materialised through the development of a free friendly-user mobile app.

关键词： IoT smart modules

Synthesis and Luminescence Properties of SBA-15 functionalized with Covalently Bonded Terbium-Benzoic Acid Complex

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Journal of Rare Earths 2004年第Z1期22卷 147-148页

作者： Peng Chunyun Zhang Hongjie Liu Fengwei Meng Qinguo fu lianshe Sun Lining Guo Junfang Yu Jiangbo Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

Novel hybrid materials containing covalently bonded Terbium-benzoic acid complex in mesoporous silicaSBA-15 (denoted as Tb-SBA-15 ) were prepared via co-condensation of tetrethoxysilane (TEOS) and N-(4-benzoicacid-yl), N'-(propyltriethoxysilyl) urea (denoted as PABI).XRD, FTIR and luminescence spectroscopy were employed to characterize Tb-SBA-15.When monitored by the ligand absorption wavelength (270 nm), Tb-SBA-15 displays the emission of Tb3+ (5D4→7Fj (j = 6, 5, 4, 3 ) transition) due to the energy transfer from the ligands to Tb3+.

关键词： SBA-15 covalently bonded terbium complex rare earths

Preparation, Characterization and Luminescent Properties of MCM-41 Type Materials Impregnated with Rare Earth Complex

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Journal of Materials Science & Technology 2001年第3期17卷 293-298页

作者： lianshe fu and Hongjie ZHANG Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China Philippe Boutinaud Laboratoire des Materiaux Inorganiques, UMR 6002, Universite UMR 6002 Univ. Blaise-Pascal et ENSCCF F-63177 Aubiére Cedex France

Hybrid materials incorporating Eu-(TTA)3·2H20 (hereafter designated as Eu-TTA, with TTA: thenoyltrifluoroacetone) in unmodified or modified MCM-41 by 3-aminopropyl-triethoxysilane (APTES) were prepared by impregnation method. The obtained materials were characterized using X-ray diffraction (XRD), IR and diffuse reflectance spectroscopy and luminescence spectra. All the hybrid samples exhibited the characteristic emission bands of Eu3+ under UV light exci-tation at room temperature, and the excitation spectra showed significant blue-shifts compared to the pure rare-earth complex. Although the red emission intensity in the modified hybrid was almost the half of the red emission intensity in the pure Eu-TTA complex at room temperature, the hybrid showed a much higher thermal stability due to the shielding character of the MCM-41 host.

关键词： MCM Characterization and Luminescent Properties of MCM-41 Type Materials Impregnated with Rare Earth Complex Preparation

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亚硝酸根的光度测定法

上海环境科学 1996年第2期15卷 24-24页

作者：符连社任英中国科学院长春应用化学研究所长春130022

根据国内外109篇文献,对测定环境样品中亚硝酸根的分光光度法(重氮偶连反应及亚硝化反应)、荧光光度法、动力学光度法及计算光度法等100多种分析方法进行了评述。

关键词：环境分析分光光度法荧光光度法亚硝酸根测定