Xiuli Wang

Bohai University, Chinchow, Liaoning, China

Are you Xiuli Wang?

Claim your profile

Publications (134)388.79 Total impact

  • Xinxin Xu · Tingting Lu · Xiaoxia Liu · Xiuli Wang
    [Show abstract] [Hide abstract]
    ABSTRACT: A new p–n heterojunction photocatalyst has been synthesized successfully through chemical-bond-mediated combination of coordination polymer nanoplates (CPNPs) and partially reduced graphene oxide (PRGO) with a simple colloidal blending process. Photocatalytic H2 production by the p–n heterojunction photocatalyst PRGO/CPNP was investigated under visible-light irradiation, which illustrates that PRGO/CPNP exhibits a much higher photocatalytic H2 production rate than neat the CPNPs. The improvement of this photocatalytic property can be attributed to the inner electrical field formed in the p–n heterojunction, which impedes recombination of photogenerated electrons and holes. In PRGO/CPNP, the existence of the p–n heterojunction has been confirmed by electrochemical methods clearly. For PRGO/CPNP, the reductive degree of the PRGO has a great influence on the H2 production rate and an ideal condition to get a PRGO/CPNP photocatalyst with higher performance has been obtained.
    Chemistry - A European Journal 08/2015; DOI:10.1002/chem.201501903 · 5.70 Impact Factor
  • Xiuli Wang · Mao Le · Hongyan Lin · Jian Luan · Guocheng Liu · Danna Liu
    [Show abstract] [Hide abstract]
    ABSTRACT: Three Cu(II) metal-organic frameworks (MOFs) based on 1,3,5-benzenetricarboxylic acid (H3BTC) and three aminopyridine derivatives with different length and coordination groups, namely [Cu2(3-ap)(HBTC)(H2BTC)(μ3-OH)(H2O)2] (1), [Cu2(3-ppca)(BTC)(H2O)3]•H2O (2), [Cu2(3-ebpba)(BTC)(μ3-OH)] (3) [3-ap = 3-aminopyridine, 3-ppca = N-(pyridin-3-yl)pyrazine-2-carboxamide, 3-ebpba = (E)-4,4'-(ethene-1,2-diyl)bis(N-pyridin-3-yl)benzamide)], have been hydrothermally synthesized and structurally characterized by elemental analyses, IR, PXRD, TG and single crystal X-ray diffraction analyses. The title MOFs display versatile structural features with 1D and 3D frameworks. Complex 1 exhibits a 1D ladder-like chain with tetranuclear copper clusters. Complex 2 shows a rare 3D framework, which features a (3,3,3,3)-connected topology with the Schläfli symbol of {8•10•12}2{82•10}2. Complex 3 exhibits a (3,8)-connected {4•62}2{42•622•7•83} topology based on tetranuclear copper clusters. The influence of aminopyridine-based ligands on the structures and properties of the title complexes has been discussed. The electrocatalytic and photocatalytic properties of complexes 1–3 have also been investigated in detail.
    Dalton Transactions 06/2015; DOI:10.1039/C5DT01446H · 4.20 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Through tuning different kinds of polyoxometalates(POMs), four POM-based inorganic–organic hybrid compounds with different dimensionalities, [(H2L)2(Mo8O26)] (1), [CuⅡ2L6(P2W24O79)•4H2O]•7H2O (2), {[CuⅡ2L2(μ2-OH)[CrMo6(OH)6O18]•4H2O}•4H2O (3), {CuI2 CuⅡ2L2(μ3-OH)2[CrMo6(OH)5 O19]•6H2O}•4H2O (4) [L = 1,4-bis(3-pyridinecarboxamido)benzene], have been synthesized under hydrothermal conditions and characterized by IR spectroscopy, TG analysis, powder XRD and single-crystal X-ray diffraction. Single-crystal X-ray analyses reveal that compound 1 exhibits a two-dimensional (2D) supramolecular network, which is constructed from protonated L ligands and [Mo8O26]4− anions through hydrogen bonding interaction. Compound 2 is a 1D hybrid chain based on an uncommon inorganic [P2W24O79]4- chain and “Y”-like (CuL3)2+ subunits. Compound 3 shows a 2D network constructed from 1D inorganic Cu2–CrMo6 chains and bidentate L ligands, which is obtained at pH=4.1. When the pH was adjusted to 4.8, compound 4 is obtained and exhibits a 4-connected {66} 3D framework. The CrMo6 anions are connected by adjacent [CuI2CuII2(μ3-OH)2(H2O)6]4+ subunits to form 1D Cu4–CrMo6 inorganic chains, which are further extended by L ligands to construct the 3D network. The effect of different types of polyanions and pH value on the assembly and various structures of the title compounds has been discussed. Furthermore, the electrochemical properties of 1 and 2, the photocatalytic properties of 2 and 3 under different conditions have been investigated.
    CrystEngComm 06/2015; DOI:10.1039/C5CE00962F · 3.86 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: By introducing the flexible bis-pyrazine-bis-amide ligands into polyoxometalates (POMs) system, five POMs-based metal-organic complexes, {Cu3(L1)2[CrMo6(OH)6O18]2(H2O)2}•10H2O (1), [CuL1(Mo8O26)0.5]•H2O (2), [Cu2(L1)2(HPMoVI10MoV2O40) (H2O)2]•2H2O (3), [Cu2(L1)2(SiMo12O40)(H2O)2]•2H2O (4), [Cu2(L2)2(SiMo12O40)]•2H2O (5) [L1=N,N’-bis(2-pyrazinecarboxamide)-1,3-propane, L2=N,N’-bis(2-pyrizinecarboxamide)-1,6-hexane], were synthesized under hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction analyses, elemental analyses, IR spectra, powder X-ray diffraction (PXRD) and thermal gravimetric analyses (TG). Single-crystal X-ray analysis reveals that compound 1 is a 1D infinite ribbon-like chain with Anderson type polyanions [CrMo6(OH)6O18]3- as building blocks. Compound 2 is a 2D layer constructed from 1D helical [Cu-L1]n2n+ chains and [Mo8O26]4- anions, in which the octamolybdates also act as inorganic building blocks. Compounds 3 and 4 are isostructural, and display 2D supramolecular networks based on the 1D [Cu-L1]n2n+ chains, in which the Keggin polyanions are serving as noncoordinated templates. Compound 5 is a 3D supramolecular framework constructed from the 2D [Cu-L2]n2n+ layers and the Keggin [SiMo12O40]4- polyanion templates. In compounds 1–4, the L1 ligands display same symmetric coordination mode with two chelating sites. When lengthening the spacer of ligand, L2 exhibits a asymmetric coordination mode in compound 5. The structural diversities of 1–5 show that the different polyoxoanions and spacer lengths of the ligands play key roles in the construction of various architectures. The title compounds represent the first examples of introducing flexible bis-pyrazine-bis-amide ligands into the POMs system. In addition, the electrochemical properties of compounds 2–5 and the photocatalytic activities of the title compounds on the degradation of methylene blue (MB) under UV, visible light and sunlight irradiation have been investigated in detail.
    RSC Advances 06/2015; 5(70). DOI:10.1039/C5RA09529H · 3.84 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: By using two kinds of organic ligands 1-benzyl-1H-(1,2,4)triazole (2-btz) and 1-benzyl-1H-(1,3,4)triazole (3-btz), six polyoxometalate (POM)-based compounds were hydrothermally synthesized and structurally characterized, [Ag4(2-btz)4(HPMoV2MoVI10O40)] (1), [Ag4(2-btz)4(SiW12O40)] (2), [Ag4(2-btz)5K(SiWVWVI11O40)]13H2O (3), [Cu4(2-btz)16(Mo8O26)2] (4), [Cu3(3-btz)8(H2O)4](PMo12O40)24H2O (5) and [Cu7(3-btz)16(OH)2(H2O)4(P2W18O62)2]16H2O (6). Compounds 1 and 2 are isostructural with two sets of Ag-(2-btz) chains linked by Keggin anions to construct a “ladder”. Adjacent “ladders” are further connected by Ag1-O13 bonds to build a 3D framework. In compound 3, the anion dimers are linked by Ag5-O9 bonds to form a 1D chain. The chains are fused by Ag3 and K ions and a 3D framework of 3 is built. In compound 4, the Mo8 anions are linked by [Cu(2-btz)4]2+ subunits to construct a 3D structure. By changing 2-btz to 3-btz, we obtained a linear tri-nuclear cluster [Cu3(3-btz)8(H2O)4]6+ in compound 5. The discrete PMo12 anions combine with tri-nuclear clusters through hydrogen bonding interactions to construct a 2D supramolecular layer. Compound 6 contains a cycle tri-nuclear cluster-supporting anion [Cu3(3-btz)6(OH)(H2O)2(P2W18O62)]-, which are further connected by one [Cu(3-btz)4]2+ subunit to construct a discrete anion dimer. The title compounds show good electrocatalytic activities for reducing nitrite, hydrogen peroxide and bromate. These compounds also exhibit excellent photocatalytic activities for the degradation of methylene blue (MB, 16 as catalysts) and rhodamine B (RhB, 5 and 6 as catalysts). Additionally, the magnetic properties of compounds 5 and 6 have been investigated.
    CrystEngComm 06/2015; 17(29). DOI:10.1039/C5CE00768B · 3.86 Impact Factor
  • Xiang Wang · Rui Zhang · Aixiang Tian · Xiuli Wang
    [Show abstract] [Hide abstract]
    ABSTRACT: A Wells-Dawson Polyoxometalate-based hybrid, Ag9(trz)3(Htrz)4 (H2O)(P2W18O62)·3H2O (1) (Htrz = 1,2,4-1H-triazole) was hydrothermally synthesized through using trz ligand and silver nitrate in the presence of [P2W18O62]6– polyoxoanion. In the 3D framework structure of compound 1, two kinds of wave-like Ag/trz chains originated from trz ligands and silver cations are aggregated in a “2+1” mode by {Ag2/trz} linkages to result in a 1D Ag/trz metal-organic ribbon, which is further extended into a 3D framework structure by [P2W18O62]6– polyoxoanions through Ag-O covalent bonds. Additionally, the electrochemical properties of compound 1 have also been investigated.
    Zeitschrift für anorganische Chemie 06/2015; 641(10). DOI:10.1002/zaac.201500216 · 1.25 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Eight new CdII/ZnII coordination polymers constructed from a semi-rigid “V”-like bis-pyridyl-bis-amide ligand and different dicarboxylates, namely, {[Cd(L)(tpd)(H2O)]·H2O}n (1), {[Cd(L)(bdc)(H2O)]·H2O}n (2), {[Cd(L)(mip)(H2O)]·H2O}n (3), {[Cd(L)(hip)(H2O)]·H2O}n (4), {[Zn(L)(tpd)(H2O)]·H2O}n (5), {[Zn(L)(bdc)(H2O)]·H2O}n (6), {[Zn(L)(mip)(H2O)]·H2O}n (7), {[Zn(L)(hip)]·2H2O}n (8), [L = N,N′-bis(pyridine-3-yl)-5-methylisophthalic dicarboxamide, H2tpd = 2,5-thiophenedicarboxylic acid, H2bdc = 1,3-benzenedicarboxylic acid, H2mip = 5-methylisophthalic acid, H2hip = 5-hydroxyisophthalic acid] have been hydrothermally synthesized and structurally characterized. In complexes 1 and 3–7, the L ligands adopt μ2–bridging mode connecting adjacent CdII/ZnII ions to give rise 1D left-, right-handed helixes. In complex 2, the L ligands connect adjacent metal ions to form a 1D right-handed helix. In complex 8, the L ligands link adjacent metal ions to obtain a 1D wave-like chain. The adjacent 1D [M-L]n (M = Cd, Zn) chains are further linked by dicarboxylates anions with monodentate-chelating or bis(monodentate) bridging mode to furnish 2D layer structures. The structural features of the title complexes indicate that the semi-rigid “V”-like bis-pyridyl-bis-amide L tends to construct 1D helix. In addition, the effects of central metals on the coordination modes of the dicarboxylates and the carboxyl position of dicarboxylates on the final structures have been discussed. The thermal stability and fluorescent properties of complexes 1–8 have been investigated. In addition, the title complexes exhibit photocatalytic activity and selectivity for dye degradation under UV light.
    Inorganica Chimica Acta 06/2015; 432. DOI:10.1016/j.ica.2015.03.043 · 2.04 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, three new polyoxometalate (POM)-based metal-organic compounds containing silver cycles/belts, namely, [K2Ag15(L1)10(H2O)2][H(PMoVI11MoVO40)2] (1), [Ag7(L1)4][PW12O40]•2H2O (2) and [Ag10(L2)8(H2O)][PW12O40] (3) (L1 = 5-o-tolyl-1H-tetrazole, L2 = 5-m-tolyl-1H-tetrazole), have been obtained under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR spectra and powder X-ray diffraction (PXRD). The organic molecules L1 and L2 are isomeric. In compound 1, there exist 2D Ag-L1 layers including Ag belts, which are further linked by Ag5 to form a 3D metal-organic framework (MOF). The inorganic chain in 1 with Keggin anions linked by Ag1 ions insert into the channels of this 3D MOF. In compound 2, the Ag-L1 belts are connected by Keggin anions to construct a 2D layer. Adjacent layers link each other through Ag-O bonds and the 3D framework of 2 is built. In compound 3, the 2D Ag-L2 layer owns Ag cycles. Adjacent layers are linked by Ag-N bonds and Keggin anions to form the 3D structure of 3. The influence of types of POM anions and organic ligands on the final structures were discussed. Furthermore, the electrochemical, photocatalytic and fluorescent properties of compounds 1–3 were investigated.
    RSC Advances 05/2015; 5(66). DOI:10.1039/C5RA07107K · 3.84 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the field of anticancer drug delivery, how to simultaneously improve drug loading capacity of carriers and achieve efficient intracellular drug transportation are very difficult but important issues for development of chemotherapy. Herein, a reversible ligand-metal-drug coordination architecture responsive to pH was employed to construct a smart drug delivery system, in which the ligand and metal can be regarded as a harbor and an anchor to not only moor drug (doxorubicin, DOX) but also send the cargo precisely on time. Based on the strategy, DOX loading content of the system could run up to 26.1%. Owing to the stability of coordination bonds at neutral condition, premature drug leakage was extremely suppressed lower than 5%, while an almost complete drug release was realized at pH 5.0 as a result of breakage of the bonds. Presence of the coordination interaction played a key role in controlled release of DOX, which followed the first-order kinetic model in the case of non-coordinated system but the pseudo-second-order kinetic model in the case of coordinated one. Moreover, the metal-coordinated system could effectively take DOX into HeLa cells, presenting a comparable cancer therapy effect to free DOX. This study established exploitation of coordination interaction to connect drugs and carriers as a promising way to meet urgent needs for chemotherapy.
    RSC Advances 05/2015; 5(59). DOI:10.1039/C5RA05747G · 3.84 Impact Factor
  • Xiuli Wang · Danna Liu · Na Han · Hongyan Lin · Jian Luan · Aixiang Tian
    [Show abstract] [Hide abstract]
    ABSTRACT: Two new polyoxometalate(POM)-based hybrid compounds, [Cu(en)][H4Mo4O16]0.5(1)(en=ethylene-diamine) and [Ag(3-C5H6N2)2][H2PMo12O40](2)(3-C5H6N2=3-aminopyridine), containing different transition metalamine subunits were hydrothermally synthesized and characterized by elemental analyses, infrared spectroscopy and single-crystal X-ray diffraction. For compound 1, each [H4Mo4O16]4−(Mo4O16) cluster was linked to four neighboring Mo4O16 clusters through four [Cu(en)]2+ subunits to yield a (2,4)-connected 2D layer, which was further extended to a 3D supramolecular network via hydrogen bonding interactions. For compound 2, the adjacent [H2PMo12O40]− clusters were bridged by [Ag(3-C5H6N2)2]+ subunits to generate a 1D chain. The electrochemical behaviors and the photocatalytic activities of compounds 1 and 2 were studied in detail.
    Chemical Research in Chinese Universities 05/2015; DOI:10.1007/s40242-015-4386-x · 1.12 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Through utilizing two kinds of pendent organic ligands, four new Keggin-based compounds, [AgI3(bpz)2(pz)(H2O)(H3PMo12O40)2] (1), [AgI2(bpz)2(H3PMo12O40)]•2H2O (2), [AgI3(btz)4(PMo12O40)] (3) and [AgI3(btz)3(PMo12O40)]·H2O (4) (bpz = 4-butyl-1H-pyrazole, pz = pyrazole, btz = 1-benzyl-1H-(1,2,4)triazole), were synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction. Compounds 1 and 2 were obtained in one-pot reaction, as well as compounds 3 and 4. In compound 1, six AgI ions are fused by four bpz and two pz molecules to form a hexa-nuclear cycle, with two coordinated water embedding through Ag3-O1W bonds. The three-connected POM1 anions connect these cycles alternately to construct 1D chains, which are further linked by four-connected POM2 anions to build a 3D framework of 1. Compound 2 contains 1D AgI chains, linked by four-connected POM1 and two-connected POM2 respectively to construct a 3D structure. The pz ligand was not observed in 2. In compound 3, there exist [AgI3(btz)4]3+ subunits, which are alternately connected by PMo12 anions to form a 1D chain. In compound 4, there exists a zigzag Ag-btz chain. Adjacent chains are further linked by Ag3-C8 bonds and a 2D metal-organic layer is constructed. The PMo12 anions link adjacent layers to build a 3D framework of 4. The syntheses of compounds 1 and 2, 3 and 4 prove that the one-pot method under hydrothermal conditions is efficient for pursuing two even more kinds of crystals.
    Dalton Transactions 04/2015; 44(22). DOI:10.1039/C5DT00903K · 4.20 Impact Factor
  • Xiuli Wang · Xiang Wang · Aixiang Tian
    [Show abstract] [Hide abstract]
    ABSTRACT: Polyoxometalate-based coordination frameworks (POMCFs) extend the families of material chemistry and structural chemistry due to their diverse properties and fascinating architectures. In the architectural field of POMCFs, the choice of organic ligand usually plays a key role in the self-assembling process. Up to date, plenty of organic ligands, such as carboxylates and N-donor ligands, have been designed and utilized in the construction of porous, multinuclear and polythreaded architectures. As far as N-donor ligands are concerned, their flexible and rigid nature can show important influences on the formation of various architectures. This perspective highlights the recent development on polythreaded/penetrating, multinuclear, helical architectural chemistry of POMCFs constructed from flexible N-donor ligands, including bis-imidazole, bis-triazole, bis-pyridine, bi-mercaptotetrazole, bi-pyridyl-bis-amide and bis-pyridyltetrazole ligands. Here we will describe the influence of different space lengths and coordination groups of flexible N-donor ligands, as well as pH and polyoxometalates on the architectural structures of POMCFs, which may offers some possible synthetic strategies to construct functional POMCFs with novel architectures.
    RSC Advances 04/2015; 5(51). DOI:10.1039/C5RA05270J · 3.84 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A series of polyoxometalate (POM)-based metal–organic complexes containing multinuclear Cu(II) clusters with 4-amino-1,2,4-triazole (4-atrz) ligand, namely, [Cu3(4-atrz)8(PMo12O40)2(H2O)2]•2H2O (1), [Cu2(4-atrz)6(SiW12O40)(H2O)]•6H2O (2), [Cu2(4-atrz)4(μ2-OH)(CrMo6(OH)6O18)]•3H2O (3), [Cu3(4-atrz)3(Mo8O27)(H2O)4]•6H2O (4) and [Cu3(4-atrz)3(V10O30)0.5(μ3-OH)(H2O)]•H2O (5) have been synthesized by selectively adding additional citric acid or boric acid under hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction and powder X-ray diffraction. Compound 1 is a zero-dimensional (0D) architecture, which is constructed from a linear trinuclear cluster [Cu3(4-atrz)8(H2O)2]6+ and two Keggin PMo12O403- anions. Compound 2 shows a 1D zigzag chain, in which the binuclear [Cu2(4-atrz)6(H2O)]4+ clusters and Keggin SiW12O404- anions connect each other. Compound 3 is a 1D linear chain based on the linear [Cu3(4-atrz)6]6+ clusters, the [CrMo6(OH)6O18]3- anions hang on two sides of the 1D chain. Compound 4 is a 2D layer constructed from trigonal [Cu3(4-atrz)3(H2O)4]6+ clusters and rare infinite [Mo8O27]n6n- chains. The [Mo8O27]6- anion is transformed from the Anderson-type [CoMo6(OH)6O18]3- anion, which is also rare in the POM-based reaction system. Compound 5 is a 3D framework constructed from the trigonal trinuclear [Cu3(4-atrz)3(OH)]5+ clusters and rare [V10O30]10- polyanions, which represents the first example of V10O30-based 3D metal–organic complex. Structural analyses indicate that different POMs show great effect on the various structures of 1–5 and the additional acids play an important role in the formation of 1–5. The photocatalytic experiments of 1–5 on degradation of three organic dyes (methylene blue, rhodamine B and methyl orange) manifest that compounds 1–3 are good candidates for the photocatalytic degradation of methylene blue, and compound 1 is a good photocatalyst for the degradation of rhodamine B.
    CrystEngComm 04/2015; 17(22). DOI:10.1039/C5CE00411J · 3.86 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A novel Wells–Dawson polyoxometalate-templated 3D microporous metal–organic framework (MOF), namely, H6[Cu3(H2O)6(P2W18O62)2(3-dpye)6]·28H2O (1) (3-dpye = N,N′-bis(3-pyridinecarboxamide)-1,2-ethane), was hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR spectra, powder X-ray diffraction (PXRD) and thermogravimetric analyses (TGA). Each Cu(II) ion acts as a four-connected node linking four 3-dpye ligands to construct a 3D microporous host MOF containing left-handed helical chains, in which the P2W18O626− anions reside. 1 represents the first example of 3D MOFs with an 86 uniform net containing non-coordinating Wells–Dawson anions. The electrochemical properties have been investigated in detail.
    RSC Advances 04/2015; 5(45). DOI:10.1039/C5RA06204G · 3.84 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A novel polyoxometalate (POM)-based metal-organic compound constructed from a multinuclear AgI cluster and Keggin-type [VW12O40]3 − anion, [Ag4(Hpyttz)2(H2pyttz)][HVW12O40]·3H2O (1) (H2pyttz = 5′-(pyridin-4-yl)-1H,2′H-3,3′-bi(1,2,4-triazole), was hydrothermally synthesized and characterized by IR spectroscopy, TG analysis, powder and single-crystal X-ray diffraction. In compound 1, [VW12O40]3 − (VW12) was in-situ transformed from [SiW12O40]4 − anion. Eight AgI ions were connected by six Hpyttz/H2pyttz ligands with three coordination modes forming an unprecedented [Ag8(Hpyttz)4(H2pyttz)2] cluster, which connected with six VW12 anions to construct a 2-D double-layer (3,6)-connected network with {43}2{46.66.83} topology. Moreover, the photocatalytic activity of 1 has been investigated.
    Inorganic Chemistry Communications 03/2015; 53. DOI:10.1016/j.inoche.2015.01.022 · 2.06 Impact Factor
  • Source
    Xiuli Wang · Tianjiao Li · Aixiang Tian · Na Li · Yang Yang · Yali Ning · Xue Hou
    [Show abstract] [Hide abstract]
    ABSTRACT: Through tuning the N-donor site of pyridine group in 5-(x-pyridyl)-1H-tetrazole ligands (x = 2, 4), four new Keggin-based compounds, [Cu7(2-ptz)8(OH)2(H2O)2(HPMoVI10MoV2O40)]•4H2O (1), [Cu5(2-ptz)6(HPMoVI10MoV2O40)(H2O)4]•4H2O (2), [Ag6(4-ptz)4(H2SiMo12O40)] (3) and [Ag5(4-ptz)4(H2PMo12O40)]•6H2O (4) (2-ptzH = 5-(2-pyridyl)-1H-tetrazole, 4-ptz = 5-(4-pyridyl)-1H-tetrazole)), were successfully synthesized under hydrothermal conditions and structurally characterized. Compound 1 owns two kinds of CuII subunits: penta-nuclear cluster and mononuclear subunit, which connect each other to form a 1D stair-like metal-organic chain. The adjacent 1D stair-like chains are further linked by tetradentate Keggin anions to construct a 2D layer. In compound 2, the tetra-nuclear CuII clusters and mono-nuclear CuII subunits construct a 2D metal-organic layer, which is further linked by bidentate Keggin anions to build a 3D framework. In compound 3, the 4-ptz ligand link AgI ions with tetrozole groups to form 1D infinite Ag-ptz chains, which are extended by the pyridyl group of 4-ptz and the tetrozole groups of other 4-ptz to construct a 2D layer. The adjacent 2D layers are further linked by 6-connected Keggin anions to build a 3D framework. In compound 4, the 4-ptz are fused by AgI ions to form a 1D infinite Ag-ptz belts. The Keggin anions are linked by AgI ions to construct another infinite inorganic chain, in which each Keggin anion provides six oxygen atoms to coordinate with the AgI ions from the adjacent Ag-ptz belts to construct a 2D layer. The roles of the ptz ligands with different N-donor site in the construction of multinuclear clusters and 1D chains have been discussed. The electrochemical and photocatalytic properties of the title compounds were investigated as well.
    CrystEngComm 03/2015; 17(17). DOI:10.1039/C4CE02438A · 3.86 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of new metal(II)-organic coordination polymers, namely, [Co(3-dpna)(1,3,5-HBTC)]•2H2O (1), [Ni(3-dpna)1.5(1,3,5-HBTC)(H2O)2] (2), [Cu(3-dpna)(1,3,5-HBTC)]•H2O (3), [Zn(3-dpna)(1,3,5-HBTC)]•2H2O (4), [Cd(3-dpna)(1,3,5-HBTC)(H2O)]•2H2O (5), [Co(4-dpna)(1,3,5-HBTC)]•4H2O (6), [Ni(4-dpna)(1,3,5-BTC)2/3] (7), [Cu(4-dpna)(1,3,5-BTC)2/3] (8), [Zn(4-Hdpna)(1,3,5-BTC)] (9), [Cd(4-dpna)(1,3,5-BTC)1/3Cl] (10), have been purposefully synthesized under hydrothermal conditions [N1,N4-di(pyridin-3-yl)naphthalene-1,4-dicarboxamide (3-dpna) and N1,N4-di(pyridin-4-yl)naphthalene-1,4-dicarboxamide (4-dpna), 1,3,5-H3BTC = 1,3,5-benzenetricarboxylic acid]. Complexes 1 and 4 exhibit similar 1D belt-like chains constructed from 1D left- and right-hand [Co-(3-dpna)]n helical chains and [Co-(1,3,5-HBTC)]n linear chains. Complex 2 furnishes a 1D [Ni-(3-dpna)1.5]n “loop + line” chain with 1,3,5-HBTC anions hanging on both sides. Complex 3 features a 2D sql network based on [Cu-(3-dpna)]n meso-helical chains and [Cu-(1,3,5-HBTC)]n linear chains. Complex 5 shows a 1D ladder-like chain constructed from [Cd-1,3,5-HBTC]n linear chains and [Cd2(3-dpna)2] loops. Complex 6 displays a 2D double sheet containing (H2O)8 clusters. Complexes 7 and 8 possess similar 3D (3,4)-connected frameworks with the (63)2(64•8•10)3 topology containing a dodecagon-shape cavity and a hexagonal cavity, respectively.Complex 9 shows a 2D network with one pyridine nitrogen atom of 4-dpna protonated. Complex 10 is a 3D (3,5)-connected framework with (3•44•63•82)3(63) topology. All the 1D chains and 2D networks are further extended into 2D supramolecular sheets or 3D supramolecular frameworks through hydrogen-bonding interactions. The effects of metal(II) ions and N-donor ligands on the structures of the title complexes were discussed. In addition, the fluorescent sensing properties of 4, 5, 9, 10, and photocatalytic activities of complexes 1-10 have been investigated in detail.
    02/2015; 2(4). DOI:10.1039/C4QI00218K
  • [Show abstract] [Hide abstract]
    ABSTRACT: Two novel Anderson-type polyoxometalate (POM)-based metal–organic complexes (MOCs), namely, H{CuL0.51 [CrMo6(OH)6O18](H2O)}·0.5L1 (1) and {Cu2(L2)2[CrMo6(OH)5O19](H2O)2}·2H2O (2) (L1 = N,N′-bis(3-pyridinecarboxamide)-1,2-ethane, L2 = N,N′-bis(3-pyridinecarboxamide)-1.3-propane), were hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR spectra, powder X-ray diffraction (PXRD) and thermogravimetric analyses (TGA). In complex 1, the bidentate [CrMo6(OH)6O18]3− (CrMo6) polyoxoanions bridge the CuII ions to generate a 1D Cu–CrMo6 inorganic chain, which is further connected by the μ2-bridging L1 ligands to form a 1D ladder-like chain. Complex 2 is a 3D POM-based metal–organic framework exhibiting a {412.63} topology, which is constructed from the quadridentate CrMo6 polyoxoanions and μ2-bridging L2 ligands. The flexible bis-pyridyl-bis-amide ligands with different spacer lengths have a significant effect on the final structures. In addition, pH shows great influence on the formation of the single-crystal phase. The photocatalytic activities of the title complexes on the degradation of methylene blue (MB) and rhodamine B (RhB) under UV and visible light have been investigated in detail.
    RSC Advances 01/2015; 5(18). DOI:10.1039/C4RA15608K · 3.84 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Four coordination polymers, [Cu(4-dpyh)0.5(1,2-BDC)(H2O)3]·H2O (1), [Cu(4-dpyh)(1,3-BDC)(H2O)] (2), [Cd(3-dpyh)0.5(1,3-BDC)(H2O)2]·H2O (3), and [Zn(3-dpyh)(1,3-BDC)]·3H2O (4) [4-dpyh = N,N′-bis(4-pyridinecarboxamide)-1,6-hexane, 3-dpyh = N,N′-bis(3-pyridinecarboxamide)-1,6-hexane, 1,2-H2BDC = 1,2-benzenedicarboxylic acid and 1,3-H2BDC = 1,3-benzenedicarboxylic acid], have been hydrothermally synthesized. X-ray diffraction analyses reveal that 1 is a discrete [Cu2(4-dpyh)(1,2-BDC)2] dinuclear structure. Compound 2 exhibits a 2-D grid layer constructed from 1-D linear [Cu(1,3-BDC)]n chains and [Cu(4-dpyh)]n chains. Compound 3 features a 1-D ladder-like chain formed by the 1-D linear [Cd(1,3-BDC)]n chains and 3-dpyh bridging ligands. Compound 4 displays a 2-D undulated layer containing meso-helical [Zn(3-dpyh)]n chains and linear [Zn(1,3-BDC)]n chains. The neighboring dinuclear complexes for 1, adjacent chains for 3, and adjacent layers for 2 and 4 are further linked by hydrogen bonding interactions to form 2-D (for 1) or 3-D supramolecular networks (for 2–4). The influences of the different dicarboxylates and metal on the structures of 1–4 have been discussed. The electrochemical behaviors of 1 and 2, the thermal stabilities and fluorescent properties of 1–4, and the fluorescent selectivities of 3 and 4 have been investigated.
    Journal of Coordination Chemistry 01/2015; 68(1). DOI:10.1080/00958972.2014.983492 · 2.22 Impact Factor
  • Xinxin Xu · Xin Gao · Tingting Lu · Xiaoxia Liu · Xiuli Wang
    [Show abstract] [Hide abstract]
    ABSTRACT: To improve the photocatalytic activity of a coordination-complex-modified polyoxometalate (CC/POM), a new type of hybrid material (abbreviated as PPy/CC/POMNR) was fabricated by the combination of its nanorod (CC/POMNR) and polypyrrole (PPy) via a facile in situ chemical oxidation polymerization process under the initiation of ammonium persulfate (APS). Under the irradiation of visible light, PPy/CC/POMNR exhibited higher photocatalytic activity compared to CC/POMNR, PPy, and their mechanically blended products formed on the degradation of Rhodamine B (RhB). Optical and electrochemical tests showed that the enhancement of photocatalytic performance can be attributed to the high separation efficiency of the photogenerated electrons and holes on the interface of CC/POMNBs and PPy, which results from the synergistic effect between them. Furthermore, the influence of the concentration ratio between pyrrole (Py) and APS on the morphology, conductivity, and photocatalytic properties of the PPy/CC/POMNR is discussed and the optimal condition to fabricate a hybrid material with high efficiency was determined. These results suggest that the hybrid of CC/POMNR and PPy would be a feasible strategy to enhance the photocatalytic activity of CC/POMNR.
    12/2014; 3(1). DOI:10.1039/C4TA05071A

Publication Stats

2k Citations
388.79 Total Impact Points

Institutions

  • 2007–2015
    • Bohai University
      Chinchow, Liaoning, China
  • 2014
    • Dalian Medical University
      Lü-ta-shih, Liaoning, China
  • 2008–2014
    • Sichuan University
      • • State Key Laboratory of Polymer Material Engineering
      • • College of Chemistry
      Hua-yang, Sichuan, China
  • 2013
    • Changchun Normal University
      Hsin-ching, Jilin Sheng, China
  • 2006–2013
    • Chinese Academy of Sciences
      • Dalian Institute of Chemical Physics
      Peping, Beijing, China
  • 2002–2012
    • Northeast Normal University
      • • The Institute of Genetics and Cytology
      • • Institute of Polyoxometalate Chemistry
      • • Department of Chemistry
      Changchun, Jilin Sheng, China
  • 2010
    • Tufts University
      Бостон, Georgia, United States