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Tunable Nonlinear Optical Property and Photocatalytic Activity on Luminescent Chiral Lanthanide Chains

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中国化学:英文版 2014年第12期32卷 1259-1266页

作者： Mei Qu Minmin Liu Jiang Liu Xianming Zhang School of Chemistry&Material Science Shanxi Normal UniversityLinfenShanxi 041004China

Five chiral(P2_(1))isostructural lanthanide coordination complexes Ln(pic)_(3)[pic=picolinic acid,Ln=La(1),Gd(2),Nd(3),Sm(4)and Eu(5)]have been hydrothermally generated,featuring one dimensional right-handed 2_(1)helical chains constructed from LnN_(3)O_(6)of square antiprism geometry and N,O-chelated pic−groups,in which 3,4 and 5 have been reported,but we explore undiscovered properties of their own *** special,1 undergoes an abnormal transformation of symmetry as the temperature cooling to 100 ***-DSC studies demonstrated that all isologues have good thermal stability with the decomposition temperature up to 400℃.Then,UV-Vis-NIR transmission spectroscopy measurements indicated that they possess a short-wavelength absorption edge onset at 377 nm,corresponding to the optical band gap of 3.29 ***,powder second harmonic generation(SHG)measurements revealed that the SHG intensity of 1,2,4 and 5 may be about 1.2,2.0,0.9 and 0.75 times that of KH_(2)PO_(4),***,1 and 3 exhibit efficient photocatalytic degradation for MB(Methylene Blue)upon UV-light ***,both 1 and 2 show strong blue luminescence.

关键词： lanthanides nonlinear optics degradation luminescence

Sm and S Co-doping to Construct Homo-hetero Cu Catalysts for Synergistic Enhancing CO_(2) Electroreduction

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Chinese Journal of Chemistry 2023年第12期41卷 1443-1449页

作者： Jiyuan Liu Pengsong Li Jiahui Bi Yong Wang Qinggong Zhu Xiaofu Sun Jianling Zhang Zhimin Liu Buxing Han Beijing National Laboratory for Molecular Sciences CAS Laboratory of Colloid and Interface and Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China

Copper(Cu)is recognized as one of the most efficient metal catalysts that can perform the electrocatalytic CO_(2) reduction reaction(CO_(2)RR)and its surface oxidation state determines the reaction *** Cuδ+(0<δ<1)species,are well known active sites in CO_(2)RR to produce hydrocarbons and ***,Cuδ+active sites are difficult to control,and it is very easy to be reduced to Cu^(0) under CO_(2)RR operating ***,we report a homo-hetero doping strategy to construct an efficient samarium(Sm)and sulfur(S)co-doping catalyst(Smx-CuSy)for CO_(2)RR to formic acid(HCOOH).At optimum conditions,Smx-CuSy delivered a high HCOOH Faradaic efficiency(FE)of 92.1%at the current density of 300 mA·cm^(–2) using 1 mol/L KOH aqueous solution as electrolyte,and the reduction potential was as low as–0.52 V *** hydrogen electrode(RHE).The co-doping of Sm and S resulted in excellent CO_(2)RR performance owing to the synergistic effect of the homo-hetero *** homo-doping of S could effectively adjust the electronic structure of Cu in favor of the formation of abundant Cu^(δ+)*** existence of hetero-Sm species could not only stabilize the Cu^(δ+)sites,but also increase the concentration of H ions to form a favorable catalytic environment for HCOOH generation.

关键词： Carbon dioxide Electrochemistry lanthanides Homo-hetero doping Copper

Studies on the separation treatment of high-level liquid waste by bisamide podand(Ⅰ):Extraction and separation of An(Ⅲ)from Ln(Ⅲ)

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Chinese Chemical Letters 2022年第7期33卷 3439-3443页

作者： Li-Kun Liu Shu-Bao Xie Hong-Bin Lv Hu Zhang Guo-An Ye China Institute of Atomic Energy Beijing 102413China

A process for actinide(Ⅲ)and lanthanum(Ⅲ)extraction separation from high-level liquid waste(HLLW)was proposed,with N,N,N’,N’-tetraoctyl diglycolamide(TODGA)as the extractant,tri-n–butyl phosphate(TBP)as the phase modifier and 2,6-bis[1-(propan-1-ol)-1,2,3-triazol-4-yl]pyridine(PyTri-Diol or PTD)as hydrophilic stripping ***‘hot test’was successfully carried out,achieving 99.92%removal of americium-241(^(241)Am)with a separation factor SF(Eu/Am)of 3.8×10^(3)in the actinide(Ⅲ)product *** results show that bisamide podand extractants can effectively realize the extraction and separation of actinide(Ⅲ)and lanthanum(Ⅲ)from Chinese commercial HLLW and thus have a bright practical application potential for the treatment of commercial HLLW.

关键词： Bisamide podand High-level liquid waste Actinides lanthanides Extraction separation

Lanthanide-Hypophosphite Frameworks with Guanidinium Guest Showing High Proton Conductivity

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Chinese Journal of Chemistry 2021年第12期39卷 3381-3385页

作者： Quan-Wen Li Zhao-Yang Li Kai Li Bin Xia Na Li Xian-He Bu School of Materials Science and Engineering National Institute for Advanced MaterialsTianjin Key Laboratory of Metal and Molecule-Based Material ChemistryNankai UniversityTianjin 300350China State Key Laboratory of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin 300071China

Proton-conductive metal-organic frameworks(MOFs)have attracted great attention for their promising application in membrane fuel *** explore proton-conductive MOFs with high performance,here we present four lanthanide-hypophosphite frameworks with distinct amine *** complexes possess a general formula[AH][Gd_(2)(H_(2)PO_(2))_(7)(AH=protonated amines)].Due to the rich hydrogen bond networks,complex 1 with guanidinium as guest shows high proton conductivity of 1.75×10^(-2) S·cm^(-1) at a relative humidity of 97%(368 K).We also studied the magnetic properties of complex 1 and reveal that the hypophosphite ligand transfers weak antiferromagnetic interactions between Gd^(3+)ions.

关键词： lanthanides Hypophosphite Metal-organic frameworks Proton transport Magnetic properties

Down-conversion materials for organic solar cells:Progress,challenges,and perspectives

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Aggregate 2022年第3期3卷 59-79页

作者： Ram Datt Swati Bishnoi Harrison Ka Hin Lee Sandeep Arya Sonal Gupta Vinay Gupta Wing Chung Tsoi Faculty of Science and Engineering Sustainable Product Engineering Centre for Innovative Functional Industrial CoatingsSwansea UniversityBay CampusFabian WaySwansea SA18ENUK Advanced Materials and Metrology Division Council of Scientific And Industrial Research-National Physical LaboratoryDr.K.S.Krishnan MargNew Delhi 110012India Department of Physics University of JammuJammuJammu and Kashmir 180006India Department of Conducting Polymers Institute of Macromolecular ChemistryCzech Academy of SciencesPrague 616206Czech Republic Department of Physics Khalifa University of Science and TechnologyP.O.Box 127788Abu DhabiUnited Arab Emirates

Organic solar cells(OSCs)in terms of power conversion efficiency(PCE)and operational lifetime have made remarkable progress during the last decade by improving the active layer materials and introducing new *** newly developed wide bandgap organic donor and low bandgap acceptor molecules covered the absorption from the visible to the near-infrared *** the incident high energy region(UV)is not in favor of *** absorption causes thermalization losses and photoinduced degradation,which hinders the PCE and lifetime of ***,lanthanide and non-lanthanide-based down-conversion(DC)materials have been introduced,which can effectively convert the high-energy photons(UV)to low-energy photons(visible)and resolve the spectral mismatch losses that limit the absorption of OSCs in high energy incident ***,the DC materials also protect the OSCs from UV-induced *** DC materials were also proposed to cross the Shockley-Queisser efficiency limit of the solar *** this review,the need for DC materials and their processing method for OSCs have been thoroughly ***,the main emphasis has been given to developing lanthanides and non-lanthanides-based DC materials for OSCs,their applications,and their impact on photovoltaic device performance,stability,and future perspectives.

关键词： down-conversion down-shifting lanthanides organic solar cells photostability

Rare Earth-bearing particles in fly ash carbons:Examples from the combustion of eastern Kentucky coals

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Energy Geoscience 2021年第2期2卷 90-98页

作者： James C.Hower John G.Groppo University of Kentucky Center for Applied Energy Research 2540 Research Park DriveLexington40511KYUSA University of Kentucky Department of Earth&Environmental SciencesLexingtonKY40506USA University of Kentucky Department of Mining EngineeringLexington40506KYUSA

Graphitic carbons from the combustion of bituminous coals and,perhaps,other coal ranks,tend to capture iron and a number of hazardous elements,including As,Hg,and *** earth elements in fly ashes occur in minerals,such as monazite,xenotime,and *** also occur in sub-nm particles,probably in a mineral form,within the AleSi glass on the investigated fly *** as graphitic carbons can capture Fe and hazardous elements,the carbons surrounding the fly ash glass and magnetic particles captures or encapsulates a broad suite of rare earth elements.

关键词： lanthanides Fullerene Graphitic carbon Kentucky Coal

Geochemistry,petrology,and palynology of the Princess No.3 coal,Greenup County,Kentucky

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International Journal of Coal Science & Technology 2020年第4期7卷 633-651页

作者： Madison M.Hood Cortland F.Eble James C.Hower Shifeng Dai Center for Applied Energy Research University of Kentucky2540 Research Park DriveLexingtonKY 40511USA Department of Earth and Environmental Sciences University of KentuckyLexingtonKY 40506USA Kentucky Geological Survey LexingtonKY 40506USA State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyBeijingChina School of Resources and Geosciences China University of Mining and TechnologyXuzhou 221116China Present Address:Department of Geosciences Baylor UniversityWacoTX 76798USA

The high volatile C bituminous-rank,Bolsovian-age Princess No.3 coal,a correlative of the heavily-mined Hazard No.7 coal and the Peach Orchard and Coalburg Lower Split coals,was investigated three sites at a mine in Greenup County,*** coal exhibits a“dulling upwards”trend,with decreasing vitrinite and a greater tendency towards dull clarain and bone lithotypes towards the top of the *** relatively vitrinite-rich basal lithotype is marked by a dominance of lycopod tree *** palynology transitions upwards to a middle parting co-dominated by tree fern and small lycopod spores and an upper bench dominated by tree ferns with contributions from small ferns,cordaites,and *** lithotypes generally have a moderate-to high-S content with a variable ash ***,Fe2O3,and certain siderophile elements are highest near the top of the *** observed in other coals,uranium and Ge are enriched at the top and bottom margins of the *** rare earth chemistry at the top of the coal has a significantly lighter distribution(higher LREE/HREE)than at the base of the coal.

关键词： Maceral Rare earth elements lanthanides Coal lithology

Di- and tetranuclear heterometallic CuⅡ-LnⅢ complexes (Ln = Gd and Dy): Synthesis, structure and magnetic properties

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Science China Chemistry 2012年第6期55卷 934-941页

作者： ZHANG ZeMin GUO FuSheng GUO PengHu LIU JunLiang NI ZhaoPing TONG MingLiang Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Chemistry and Chemical EngineeringSun Yat-Sen UniversityGuangzhou 510275China

Four 3d-4f heterometallic complexes, [CuⅡ-LnⅢ(bpt)2(NO3)3(MeOH)] (Ln = Gd, 1; Dy, 2; bptH = 3,5-bis(pyrid-2-yl)-l,2,4- triazole), [CuⅡ-LnⅢ(μ-OH)2(bpt)4C14 (H2O)2]·6H2O (Ln = Gd, 3; Dy, 4), have been synthesized under solvothermal condi- tions. X-ray structural analyses reveal that 1 and 2 are isostructural while 3 and 4 are isostructural. In each complex, the copper and gadolinium or dysprosium ions are linked by two triazolate bridges and form a CuⅡ-LnⅢ dinuclear unit. The intramolecu- lar Cu-Ln distances are 4.542, 4.525, 4.545 and 4.538 ] for 1, 2, 3 and 4, respectively. Two dinuclear CuLn units are bridged by two OH- groups into the zig-zag tetranuclear {cunzLnm2} structures with the Ln(Ⅲ)...Ln(Ⅲ) distances of 3.742 and 3.684 for 3 and 4, respectively. Magnetic studies show that the antiferromagnetic CulI-Lnm interactions occur in 1 (Jcu = -0,21 cm-1) and 2. The antiferromagnetic interaction occurs in complex 3 with JcuGa = -0.82 cm-1 and JcdGd = --0.065 cm-1, while domi- nant ferromagnetic interaction occurs in complex 4.

关键词： heterometallic complexes copper lanthanides triazolate X-ray crystallography magnetic properties

Calixarene-supported hexadysprosium cluster showing single molecule magnet behavior

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Science China Chemistry 2012年第6期55卷 967-972页

作者： BI YanFeng XU GuanCheng LIAO WuPing DU ShangChao DENG RuiPing WANG BingWu State Key Laboratory of Rare Earth Resource Utilization Engineering Research Center for the Separation and Purification of REs' and Thorium Changchun Institute of Applied Chemistry Chinese Academy o( Sciences Changchun 130022 China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications ' College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

The syntheses, crystal structures, magnetic and luminescent properties of three isornorphous compounds [LnIII6（,u4-O）2（C4A）2- （NO3）2（HCOO）2（CH30）2（DMF）4（CH3OH）4] （Ln = Gd （1）, Tb （2） and Dy （3）; H4C4A = p-tert-butylcalix[4]arene） are reported. These three compounds are featured with the sandwich-like units constructed by two tail-to-tail calixarene molecules and an in-between Lnm6 octahedron. The DyTM compound exhibits both single molecule magnet behavior and photoluminescence.

关键词： calixarene lanthanides single molecule magnet photoluminescence