Yao-Yu Wang

Northwest University, KYL, Florida, United States

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Publications (200)668.74 Total impact

  • Hai-Hua Wang · Tao-Tao Guo · Dong Xie · Zhi-Qin Bai · Lei Hou · Yao-Yu Wang ·

  • Yunlong Wu · Guo-Ping Yang · Yingdi Zhang · Nannan Shi · Jun Han · Yao-Yu Wang ·
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    ABSTRACT: A new metal-organic framework (MOF) with the formula [Cd(H2La)0.5(H2Lb)0.5(H2O)] (1), where H2La2- and H2Lb2- represent two different coordination modes of H2L2- ligands (H4L = [1,1′:4′,1′′-terphenyl]-2′,4,4′′,5′-tetracarboxylic acid), has been synthesized successfully by solvothermal reaction, and characterized by elemental analysis, FT-IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). Interestingly, H2L2- adopted two coordination fashions during the self-assembly process of 1 because of the effect of partially deprotonated H4L ligands, which resulted in the 3D framework of 1 showing a trinodal (4,4,4)-connected PtS topology with a point symbol of (42·84). More importantly, the product of 1 displays greatly intense luminescence in the solid state and high sensitivity and selectivity for Fe3+ ions in aqueous solution with mixed ions, making it a new potential probe for detecting Fe3+. The quenching mechanisms are also further discussed in detail. This journal is
    RSC Advances 10/2015; 5(110):90772-90777. DOI:10.1039/C5RA18807E · 3.84 Impact Factor
  • Xiu-Yuan Li · Meng Liu · Kenfen Yue · Ya-Pan Wu · Tian He · Ni Yan · Yao-Yu Wang ·
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    ABSTRACT: Seven new mixed–ligand coordination polymers, {[Co0.5(bib)0.5(tftpa)0.5]·0.5H2O}n (1), [Cd2(bib)(tftpa)2]n (2), [Ni0.5(bib)0.5(tftpa)0.5]n (3), {[Co0.5(tftpa)(H2O)]·0.5bib·EtOH}n (4), {[Cd0.5(tftpa)(H2O)]·0.5bib·EtOH}n (5), [Cd3(bib)3(tftpa)3(MeOH)3]n (6), and [Cd(bib)(tftpa)(MeOH)]n (7) (bib = 1,4-bis(2-methylimidazol-1-yl)butane, H2tftpa = tetrafluoroterephthalic acid) have been synthesized under different reaction conditions and characterized by elemental analysis, IR, PXRD, single crystal X-ray diffraction analysis and thermogravimetric analysis. Complex 1 exhibits an unusual [2 + 2] interpenetrating diamond framework belonging to class IIIa with the point symbol 66. Complex 2 reveals a (3,4)-connected 3D framework with a unique double-stranded helical chain based on Cd–O–Cd and Cd–(COO)–Cd. Complex 3 presents a 4-fold interpenetrating 3D diamond framework belonging to class Ia with the point symbol 66. Complexes 4 and 5 display a 3D supramolecular architecture built on 2D stacked layers through hydrogen bonding and π–π interactions. Complex 6 also shows a 3D 4-fold interpenetrating diamond framework belonging to class Ia with the point symbol 66. Complex 7 features a 2D + 2D → 2D parallel polycatenated framework with the point symbol 44·62. The structural diversity of complexes 1–7 illustrate that a subtle change can have a marked effect on the crystal architectures. Moreover, the magnetic properties of complexes 1, 3, and 4, and the solid-state photoluminescence results for complexes 2, and 5–7 were also studied.
    CrystEngComm 10/2015; 17(43). DOI:10.1039/C5CE01423A · 4.03 Impact Factor
  • Hai-Hua Wang · Wen-Juan Shi · Lei Hou · Gao-Peng Li · Zhonghua Zhu · Yao-Yu Wang ·
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    ABSTRACT: The reaction of N-rich pyrazinyl triazolyl carboxyl ligand 3-(4-carboxylbenzene)-5-(2-pyrazinyl)-1H-1,2,4-triazole (H2 cbptz) with MnCl2 afforded 3D cationic metal-organic framework (MOF) [Mn2 (Hcbptz)2 (Cl)(H2 O)]Cl⋅DMF⋅0.5 CH3 CN (1), which has an unusual (3,4)-connected 3,4T1 topology and 1D channels composed of cavities. MOF 1 has a very polar framework that contains exposed metal sites, uncoordinated N atoms, narrow channels, and Cl(-) basic sites, which lead to not only high CO2 uptake, but also remarkably selective adsorption of CO2 over N2 and CH4 at 298-333 K. The multiple CO2 -philic sites were identified by grand canonical Monte Carlo simulations. Moreover, 1 shows excellent stability in natural air environment. These advantages make 1 a very promising candidate in post-combustion CO2 capture, natural-gas upgrading, and landfill gas-purification processes.
    Chemistry - A European Journal 09/2015; 21(46). DOI:10.1002/chem.201502532 · 5.73 Impact Factor
  • Jun-Cheng Jin · Ling-Yan Pang · Guo-Ping Yang · Lei Hou · Yao-Yu Wang ·
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    ABSTRACT: Two novel porous luminescent metal-organic frameworks (MOFs, and ) have been constructed using 3,4-di(3,5-dicarboxyphenyl)phthalic acid using a hydrothermal method. Both MOFs can work as highly sensitive sensors to Fe(3+) by luminescent quenching. Analyses of the structures indicate a higher quenching efficiency of because of the existence of active -COOH groups. Based on this consideration, the quenching mechanisms are studied and the processes are controlled by multiple mechanisms in which dynamic and static mechanisms of MOFs are discussed. Besides, the corresponding dynamic and static quenching constants are calculated, achieving the quantification evaluation of the quenching process. As expected, experimental data show that compound possesses an overall quenching efficiency 6.9 times that of compound . Additionally, time-dependent intensity measurements, the shifts of the excitation spectrum and the appearance of a new emission peak all give visual proofs of the distinct mechanisms between the two MOFs.
    Dalton Transactions 09/2015; 44(39). DOI:10.1039/C5DT03038B · 4.20 Impact Factor
  • Bo Liu · Wei-Ping Wu · Lei Hou · Zhi-Sen Li · Yao-Yu Wang ·
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    ABSTRACT: Two nanocage-based metal-organic frameworks respectively built on two and three types of clusters with diisophthalate ligand were constructed, displaying unprecedented (3,4,6)-connected nets, unusual nanocages, and new bipaddle-wheel tetranuclear cluster, as well as highly selective CO2 capture.
    Inorganic Chemistry 09/2015; 54(18). DOI:10.1021/acs.inorgchem.5b00987 · 4.76 Impact Factor
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    ABSTRACT: Six new Co(II)-base mixed-ligand coordination polymers, namely, [Co2(H3bppc)2(2,2′-bpy)4]•H2O (1), [Co2(Hbppc)(2,2′-bpy)2(H2O)]•H2O (2), [Co(H2bppc)(H-bpp)]•2H2O (3), [Co3(μ3-OH)(bppc)(dps)(CH3CH2OH)]•4H2O (4), [Co2(bppc)(bib)(H2O)4]•(H2-bib)0.5•(H2O)3 (5), [Co2(Hbppc)(bix)2]•2H2O (6), (H5bppc = biphenyl-2,4,6,3',5'-pentacarboxylic acid, 2,2'-bpy = 2,2'-bipyridine, bpp = 1,3-bis(4- pyridyl)propane, dps = 4,4′-sulfanediyldipyridine, bib = 1,4-bis(imidazol-1-yl)benzene, bix = 1,4-bis(imidazol-1-ylmethyl)benzene), have been obtained under solvothermal conditions. 1exhibits a 3D supramolecular framework based on [Co2(H3bppc)2(2,2′-bpy)4] unit. 2 has an unusual(2,3,4)-connected net with a (10)(4.82.103)(4.82)2containing alternate binuclear metal clusters and single metal centres. 3 shows 3D supramolecular architecture constructed from ladder-like arrays decorated with H-bpp. 4exhibits abinodal (5,7)-connected 3D network based on trinuclear[Co3(μ3-OH)]5+ units with an unusual ( topology.5 features a (4,6)-connected 3D fsc open framework with binuclear [Co2(H2O)(COO)]3+ units as nodes, and H2-bib and water molecules located in the voids of its framework by hydrogen bonds. 6possesses a (2,2,2,4,4,4)-connected 3D network containingunusual 2D polyrotaxanesheets with (12)(8)(4)2(4.85)2(42.84)2(83.122.14)2topology.The structural difference of 1 and 2 is due to different pH value of reaction system. Though complexes 2-6 were synthesis under similar reaction conditions, the carboxylic groups of H5bppc were partially deprotonated in 2, 3 and 6 and fully deprotonated in 4 and 5. Complexes 2-6 display diverse structures depending on different N-donor ligands and coordination modes of multicarboxylate ligand. Variable-temperature magnetic susceptibility measurements reveal that complexes 1-6 show antiferromagnetic interactions.
    Dalton Transactions 07/2015; 44(33). DOI:10.1039/C5DT02147B · 4.20 Impact Factor
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    ABSTRACT: Four super water-stable isostructural lanthanide-organic frameworks, [Ln(HL)(H2O)2]n•2H2O (1-Ln) (Ln = Eu, Tb, Nd and Sm), have been successfully synthesized under hydrothermal condition by 3,5-di(2,4-dicarboxylphenyl)pyridine (H4L) and Ln(NO3)3•6H2O. 1-Ln shows a novel 2D layered structure with uncoordinated carboxylic and pyridyl groups pointing to the interior of interlayer channels. The luminescent properties of 1-Eu in solid state and the one steeped in aqueous solution have been measured, which show excellent luminescence and good luminescent stability in water. Then 1-Eu has been chosen as probe for sensing different metal ions. Consequently, 1-Eu exhibits highly selective response to Fe3+ through luminescence quenching effect in aqueous solution. Besides, the probable mechanisms of the quenching effects have been investigated in detail.
    Dalton Transactions 06/2015; 44(29). DOI:10.1039/C5DT01421B · 4.20 Impact Factor
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    ABSTRACT: In this article, it has used four rigid bidentate N-donor ligands (phen = phenanthroline, 2,2’-bipy = 2,2’-bipyridine, 4,4’-bipy = 4,4’-bipyridine, bpe = 1,2-bis(4-pyridyl)ethene) reacted with the Cd(II) ions and flexible ligand 4,4’-((5-carboxy-1,3-phenylene)bis(oxy))dibenzoic acid (H3cpbda), and successfully synthesized five complexes with different dimensions and luminescence properties. In addition to the “T” and “Y” shaped molecular configurations of H3cpbda, the “M” shaped molecular configuration is found for the first time. Three types of molecular configurations act various roles to assemble different dimensional structures. Furthermore, the influence of two different kinds of rigid bidentate N-donor ligands on dimensions and luminescence properties has been studied.
    Inorganica Chimica Acta 05/2015; 433. DOI:10.1016/j.ica.2015.04.027 · 2.05 Impact Factor
  • Wei-Ping Wu · Zhi-Sen Li · Bo Liu · Ping Liu · Zheng-Ping Xi · Yao-Yu Wang ·
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    ABSTRACT: A new 2D highly flexible and breathing porous framework, [CuL(Me2NH)]∙DMF∙H2O (1) (H3L = 5-(4’-carboxylphenoxy)nicotic acid) has been synthesized using a tritopic linker with flexible joint. The desolvated framework, [CuL(Me2NH)] (1a), undergoes structural contraction, and exhibits selective and double-step hysteretic adsorption for CO2. Furthermore, exposure to CH2Cl2 at room temperature, a unique single-crystal-to-single-crystal transformation occurred between 1 and [Cu2L2(Me2NH)2(H2O)2]∙5H2O (1b).
    Dalton Transactions 04/2015; 44(22). DOI:10.1039/C5DT00460H · 4.20 Impact Factor
  • Yun-Long Wu · Guo-Ping Yang · Xiang Zhou · Jiang Li · Yan Ning · Yao-Yu Wang ·
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    ABSTRACT: Three new Cd(II)-MOFs, [Cd(L1)0.5(bpp)] (1), [Cd(L1)0.5(bipy)] (2), and [Cd(L2)0.5(bipy)] (3) [H4Ln = (1,1':4',1''-terphenyl)-2',x,x'',5'-tetracarboxylic acid (n = 1, x = 3, and n = 2, x = 4), bpp = 1,3-di(4-pyridyl)propane, and bipy = 2,2'-bipyridine], have been synthesized by Cd(II) ions and isomeric H4Ln ligands in the presence of auxiliary ligands via solvothermal reaction, which have been fully characterized by elemental analyses, FT-IR spectroscopy, power X-ray diffraction (PXRD), and thermogravimetric analyses (TGA). Complex 1 is a three-dimensional (3D) pillar-layered network built by L14- and bridging bpp co-ligands, showing a binodal (4,8)-connected gsp2 topology with symbol of (44.62)(416.612), 2 was successfully yielded by bipy instead of bpp ligand in the assembly of 1, giving a 2D 4-connected sql net, and 3 is a 3D reticular framework with [Cd2(COO)4] SBUs based on H4L2 ligand, displaying a (4,4)-connected lvt (42.84) topology. X-ray diffraction analysis revealed that the structures of MOFs can be mediated by the steric effect of tetracarboxylates and secondary co-ligands. The solid-state luminescent properties of MOFs have been measured carefully by ultraviolet irradiation at room temperature. Especially for 3, exhibiting a high sensitivity for Fe3+ in aqueous solution with mixed metal ions, which make it be a promising crystalline material as luminescent probe to Fe3+. Importantly, 3 can keep its original framework and be reused in sensing experiments. The sensing mechanism has also been studied in detail.
    Dalton Transactions 04/2015; 44(22). DOI:10.1039/C5DT00492F · 4.20 Impact Factor
  • Yao-Yu Wang · Bo Liu · Ya-Hui Jiang · Zhi-Sen Li · Lei Hou ·
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    ABSTRACT: A microporous metal‒organic framework, [H2N(Me)2]2[Zn4(L)2(H2O)1.5]∙5DMF∙H2O (1∙DMF) or [H2N(Me)2]2[Zn4(L)2(H2O)1.5]∙4DMA∙6H2O (1∙DMA) has been synthesized under solvothermal condition using an undeveloped asymmetrical pentacarboxylate ligand, 2,4-di(3ʹ,5ʹ-dicarboxylphenyl)benozoic acid (H5L). Structure analysis demonstrates that 1 is a 3D anionic framework based on two kinds of dinuclear [Zn2(COO)5(H2O)] secondary building units (SBUs), which presents a rare framework constructed from ternary SBUs and shows a new (5,5,5)-connected topology. The desolvated anionic structure of 1∙DMF (1a) contains two shapes of 1D channel with suitable pore sizes and highly polar pore system decorated by open metal sites, diethylammonium cations and carboxylic oxygen atoms, exhibiting multipoint interactions between CO2 molecules and the framework, resulting in high CO2 uptake and significant selectivity for CO2 over CH4 and N2. In addition, the 1∙DMF and 1∙DMA display solid-state photoluminescence stemming from the ligand-centered fluorescent emissions of H5L.
    04/2015; 2(6). DOI:10.1039/C5QI00025D
  • Wei-Ping Wu · Ping Liu · Yu-Tong Liang · Lin Cui · Zheng-Ping Xi · Yao-Yu Wang ·
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    ABSTRACT: Three 2D luminescent coordination polymers with helical frameworks, [ZnL2]n (1) and {[ML2]·(H2O)}n (M=Zn (2), Cd (3)) (HL=4-((2-methyl-1 H-imidazol-1-yl)methyl)benzoic acid), have been assembled under hydro(solvo)thermal conditions. Complex 1 is in chiral space group and displays a rare 2D→2D 2-fold parallel interpenetrated layer network with two types of chiral double helixes. Interestingly, the single crystal structure analyses indicate the coexistence of enantiomers la and 1b in one pot, while the bulk crystallization of 1 are racemic mixtures based on the CD measurement. 2 and 3 are isostructural, in the structure, there are two kinds of 2D chiral helical-layers which stack in an -ABAB- sequence leading to the overall structure are mesomer and achiral. All compounds display intense luminescence in solid state at room temperature with high chemical and thermal stability. More importantly, 1 has been successfully applied in the detection of Cu2+ ions in aqueous media and nitrobenzene and the probable detecting mechanism was also discussed.
    Journal of Solid State Chemistry 04/2015; 228. DOI:10.1016/j.jssc.2015.04.009 · 2.13 Impact Factor
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    ABSTRACT: The first use of H4nbtc ligand afford a novel 2D Cu(II) metal-cluster-based coordination polymer (MCCP), [Cu4(nbtc)1.5(μ3-OH)2(H2O)4·8H2O (1) (H4nbtc = 6,6′-dinitro-2,2′,4,4′-biphenyl tetracarboxylic acid), in which the boat- and chair-shaped tetranuclear cooper (II) clusters [Cu4(μ3-OH)2]6+ coexist unprecedentedly. Interestingly, the chair-shaped CuII4 cluster-based 1D ladder chain perfectly threaded into the rectangle windows of the 2D grids constructed by boat-shaped CuII4 clusters and H4nbtc. And the magnetic property has also been investigated.
    Inorganic Chemistry Communications 03/2015; 53. DOI:10.1016/j.inoche.2015.01.023 · 1.78 Impact Factor
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    ABSTRACT: The incorporation of Lewis base sites and open metal cation sites into metal-organic frameworks (MOFs) is a potential route to improve selective CO2 adsorption from gas mixture. In this study, three novel amino-functionalized metal-organic frameworks (MOFs): Mg-ABDC [Mg3(ABDC)3(DMF)4], Co-ABDC [Co3(ABDC)3(DMF)4] and Sr-ABDC [Sr(ABDC)(DMF)] (ABDC = 2-aminoterephthalate) were synthesized by solvothermal reactions of 2-aminoterephthalic acid (H2ABDC) with magnesium, cobalt and strontium metal centers, respectively. Single-crystal structure analysis showed that Mg-ABDC and Co-ABDC were isostructural compounds comprising two-dimensional layered structures. The Sr-ABDC contained a three-dimensional motif isostructural with its known Ca analogue. The amino-functionalized MOFs were characterized by powder X-ray diffraction, thermal gravimetric analysis and N2 sorption. The CO2 and N2 equilibrium adsorption capacities were measured at different temperatures (0, 25 and 35 [degree]C). The CO2/N2 selectivities of
    Dalton Transactions 03/2015; DOI:10.1039/C4DT03927K · 4.20 Impact Factor
  • Hui-Hui Miao · Guo-Ping Yang · Bo Liu · Wei-Ping Wu · Lin Cui · Yao-Yu Wang ·
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    ABSTRACT: Based on the N-Donor auxiliary ligand effect, two new Ni(II) coordination polymers [Ni2(HL)2(bpe)2] (1) and [Ni(HL)(bipy)(H2O)2] (2) [H3L = 2-(4'-carboxypheny)terephthalic acid; bpe = 1,2-bis(4-pyridyl)ethane; bipy = 4,4'-bipyridine] have been successfully synthesized and characterized by single-crystal X-ray diffraction study, elemental analysis, IR spectra, TGA analyses and powder X-ray diffraction (PXRD). This work presents a comparative study on the tuning of structural topologies by using two N-Donor ligands with different lengths as auxiliary ligands. The structural determination reveals that complex 1, incorporating bpe ligands, features a three-dimensional (3D) 4-connected 4-fold dia interpenetrating architecture with the point symbol of 66, while 2, containing bipy ligands, exhibits a two-dimensional (2D) sql layer structure with a 4-connected (44.62) topology. Moreover, the magnetic properties for 1 and 2 were also measured and compared on account of their different structures.
    Inorganic Chemistry Communications 03/2015; 55. DOI:10.1016/j.inoche.2015.03.018 · 1.78 Impact Factor
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    ABSTRACT: Two new 3D coordination polymers, [Zn3(L)2(H2O)4] · H2O (1) and [Zn5(μ3-OH)4(L)2(H2O)2] (2) (H3L = 3-(2’,5’-dicarboxylphenyl)benzoic acid), have been synthesized under hydrothermal conditions by adding different amount of NaOH. Structural analyses show that both of them contain 1D inorganic Zn(II)-chains as rod-shaped secondary building units (SBUs) but they are in different forms. The rod-shaped Zn(II)-chain of 1 is only Zn-carboxylate chain, while the one in 2 is formed by the independent Zn5(COO)6 clusters connected by hydroxyl oxygen. Furthermore, the thermal and luminescent properties of both compounds have been studied.
    Inorganic Chemistry Communications 03/2015; 56. DOI:10.1016/j.inoche.2015.03.017 · 1.78 Impact Factor
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    Meng Kang · Guo-Ping Yang · Lei Hou · Wei-Ping Wu · Yun-Long Wu · Yao-Yu Wang ·
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    ABSTRACT: Structural transformation has aroused wide interest and has emerged as a promising approach for the design and synthesis of novel coordination polymers. In this work, we found interesting structural transformation phenomena triggered from a nickel coordination polymer (CP). Two temperature-dependent two-dimensional (2D) CPs, 1 and 2 were synthesized from hydrothermal reactions, while the other two CPs, 2D 3 and 3D 4 were the products of the in situ thermal decomposition of 1. Interestingly, 1 could undergo methanol-mediated transformation to afford 2 and 2 might convert to 1 under the condition of adding bipy in water. The multi-step conversions from 1 to 3 and 3 to 4 triggered by heat treatment in the solid state accompany the very rare dynamic response of a sequential release of coordinated water and partial organic ligands. More importantly, the mechanism of the transformation has also been studied in detail. Moreover, 3 could revert back to 1 quickly upon exposure to air, and this reversible process of dehydration–rehydration could be repeated at least ten times, which could highlight the application for their use in moisture sensors.
    CrystEngComm 02/2015; 17(8). DOI:10.1039/C4CE02333A · 4.03 Impact Factor
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    ABSTRACT: The 1D complex [(CuL0.5 H2 O)⋅H2 O]n (1) (H4 L=2,2'-bipyridine-3,3',6,6'-tetracarboxylic acid) undergoes an irreversible thermally triggered single-crystal-to-single-crystal (SCSC) transformation to produce the 3D anhydrous complex [CuL0.5 ]n (2). This SCSC structural transformation was confirmed by single-crystal X-ray diffraction analysis, thermogravimetric (TG) analysis, powder X-ray diffraction (PXRD) patterns, variable-temperature powder X-ray diffraction (VT-PXRD) patterns, and IR spectroscopy. Structural analyses reveal that in complex 2, though the initial 1D chain is still retained as in complex 1, accompanied with the Cu-bound H2 O removed and new O(carboxyl)Cu bond forming, the coordination geometries around the Cu(II) ions vary from a distorted trigonal bipyramid to a distorted square pyramid. With the drastic structural transition, significant property changes are observed. Magnetic analyses show prominent changes from antiferromagnetism to weak ferromagnetism due to the new formed Cu1-O-C-O-Cu4 bridge. The catalytic results demonstrate that, even though both solid-state materials present high catalytic activity for the synthesis of 2-imidazolines derivatives and can be reused, the activation temperature of complex 1 is higher than that of complex 2. In addition, a possible pathway for the SCSC structural transformations is proposed. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
    Chemistry - A European Journal 02/2015; 21(12). DOI:10.1002/chem.201405984 · 5.73 Impact Factor
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    Bo Liu · Lei Hou · Wei-Ping Wu · Ai-Na Dou · Yao-Yu Wang ·
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    ABSTRACT: A doubly interpenetrated MOF was constructed using a new pyridyl carboxylate ligand with active pyridyl sites, which exhibits highly efficient luminescence sensing for Cu(2+) ions and sorption selectivities of CO2 over CH4 and N2.
    Dalton Transactions 02/2015; 44(10). DOI:10.1039/c4dt02481h · 4.20 Impact Factor

Publication Stats

4k Citations
668.74 Total Impact Points


  • 1999-2015
    • Northwest University
      KYL, Florida, United States
    • Northwest University
      • Department of Chemistry
      Ch’ang-an, Shaanxi, China
  • 2010
    • Tianjin Normal University
      • College of Chemistry and Life Science
      Tianjin, Tianjin Shi, China
  • 2006
    • Yan Shan University
      Sandzhi, Xinjiang Uygur Zizhiqu, China
  • 1999-2003
    • Lanzhou University
      Kao-lan-hsien, Gansu Sheng, China

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