A Zinc(Ⅱ) Coordination Framework Based on Terpyridine and 5-Nitroisophthalic Acid Mixed Ligands: Synthesis, Crystal Structure and Fluorescence Property

A new coordination framework, {[Zn（L1）（5-nipc）]·H2O}n（1, L1 = 4ˊ-（4-pyridyl）-4,2ˊ：6ˊ,4ˊˊ-terpyridine, 5-nipc = 5-nitroisophthalic acid）, has been prepared under hydrothermal conditions, and determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR and powder X-ray diffraction. Complex 1 crystallizes in monoclinic, space group C2/c with a = 29.983（9）, b = 13.709（3）, c = 14.391（3）A, β = 114.93（4）°, V = 5364（2） A3, Dc = 1.493 g/cm^3, C28H19N5O7 Zn, Mr = 602.85, F（000） = 2464, μ（Mo Kα） = 0.972 mm^-1, Z = 8, R = 0.0935 and w R = 0.1509 for 4724 observed reflections（I 〉 2σ（I））. The structure of 1 exhibits a three-dimensional（3D） network with a layer-pillar structure. The fluorescence property of 1 is also investigated.

One New 3D Pillared-layer Ag(Ⅰ)-Coordination Framework Based on a Unique 1D Ag2O2 Ribbon： Synthesis,Crystal Structure and Luminescent Properties

A new 3D Ag（I） coordination polymer {[Ag（AZDB）（0.5）（bpe）（0.5）]·H2O}n（1） has been papared by azobenzene-3,3？-dicarboxylicate（H2AZDB）, 1,2-bis（4-pyridyl）ethylene（bpe） and silver salts via hydrothermal method. The compound was fully characterized by single-crystal X-ray diffraction, elemental analyses, infrared spectrum（IR）, powder X-ray diffraction（PXRD） and thermogravimetric analysis（TGA）. The strucrural analysis indicate that compound 1 shows a 3D pillared-layer framework constructed from a unique 1D Ag2O2 ribbon and pyridyl/carboxylicate mixed system, which features a 2-nodal（4, 6）-connected fsc net with a（4^4·6^10·8）（4^4·6^2） topology.Moreover, the photoluminescent properties have also been discussed.

A Two-dimensional Lanthanide Coordination Framework with a New Amide-type Tripodal Ligand, 2,2',2"-Nitrilotris{[(2'-benzylaminoformyl)phenoxy]ethyl}amine

The La(III) complex with a new amide-type tripodal ligand, 2,2,2-nitrilotris{[(2-benzylaminoformyl)- phenoxy]ethyl}amine (L), was synthesized and characterized by X-ray crystallographic analysis. Crystal data: C48H55.50LaN7O18.75, Mr=1169.40, monoclinic, space group, P21/n, a=1.0644(3) nm, b=2.3889(5) nm, c=2.1917(5) nm, b=90.65, V=5.573(2) nm3, Z=1, Dc=1.394 gcm-3, R1=0.0487, wR [I>2s(I)]=0.1266. The results reveal that each La(III) ion binds to 9 oxygen atoms, three of which belong to carbonyl groups from three tripodal ligands and six to three bidentate nitrate groups and a two-dimensional sheet of 4.82 networks is assembled by metal-ligand coordination interaction. L, a heptadentate compound, merely acts as a tridentate bridging spacer due to its steric hindrance and links the La(III) ions as three-connected nodes.

A Transaction Management Model Supporting Service Grids

Service grids possess the features of intelligence and automation to compose heterogeneous resources and will be a commercial focus in network economy pattern. However, service grid business is loosely-coupled, distributed and long-running, so there is a real challenge for the researchers to provide consistency and reliability for service grid business. This paper references the transaction management methods in Web service and the safepoint concept in workflow system, combines with the feature of the service grid, and then presents a transaction management model based on service grid. This model guarantees the robustness of grid service composition and assures that service grid enabling system provides consistent and reliable results for the consumers. Key words service grid - transaction - coordination framework - coordination protocol - recovery - salepoint CLC number TP 393 Foundation item: Supported by the High Technology Research and Development Program of China (2003AA414210) and National Natural Science Foundation of China (60173051)Biography: CHEN Xiang-yu (1979-), female, Master candidate, research direction: Web service, grid, distributed system.

Syntheses and Anti-lung Cancer Activities of Zn(Ⅱ)and Cu(Ⅱ)Complexes Based on Triazole and Tetrazole,respectively

The reactions of 4H-1,2,4-triazole（Htrz） with ZnCl2, 1H-tetrazole（Htez） and Cu（NO3）2·6H2O afford two novel coordination polymers respectively, {[Zn2（trz）2（ox）]（H2O）3}n（1） and {[Cu3（tez）3（OH）2（H2O）2]（NO3）（DMF）4}n（2）（H2ox =（COOH）2, DMF = N,N-dimethylformamide）. 1 shows 1D channels along the a axis filled with water molecules and 2 features a 2D bi-layered framework based on trinuclear Cu（II） units bridged by two μ3-OH groups. In addition, in vitro antitumor activities of compounds 1 and 2 on four human lung cancer cells（16HBE, NCI-H1299, NCI-H460 and NCI-H292） were further determined.

Syntheses and Anti-lung Cancer Effects of Two Novel Dy(Ⅲ)Complexes Based on 1,3,5-Benzenetricarbocylic Acid and 1,3,5-Benzenetrisbenzoic Acid,respectively

The reactions of 1,3,5-benzenetricarbocylic acid（H3BTC） and 1,3,5-benzenetrisbenzoic acid（H3BTB） with Dy（NO3）3·6H2O afford two novel Dy（III） coordination polymers respectively, Dy（BTC）（H2O）DMF（1） and [Dy（BTB）（Et OH）]（DMF）（2）（DMF = N,N-dimethylformamide）. 1 shows a 3D framework composed of available Lewis-acid metal sites which are occupied by the coordinated water molecules, and 2 features a noninterpenetrated open 3D framework with a 5-connected bnn hexagonal topology possessing the point symbol（46.64）. In addition, in vitro antitumor activities of compounds 1 and 2 on three human lung cancer cells（H1975, HCC827 and A549） were further determined.

Coordination polymers： Challenges and future scenarios for capture and degradation of volatile organic compounds

Over the past few decades, coordination polymers/metal organic frameworks （CPs/MOFs） have drawn a great deal of attention for diverse applications due to their advantages of intrinsically ttLnable chemical structure, flexible architecture, high pore volume, high surface area, multifunctional properties, etc. To date, numerous CPs/MOFs have been developed and employed for the treatment and control of gaseous pollutants, such as volatile organic compounds （VOCs）, through capture, sorptive removal, and catalytic degradation. Nevertheless, there are also some key drawbacks and challenges for the practical application of these systems （e.g., poor selectivity, high energy （and fiscal） cost, high synthesis cost, low capacity, and difficulties in regeneration and recycling）. In this review, recent developments in CPs/MOFs research are described with their associated mechanisms for capture, sorptive removal, and catalytic degradation of VOCs. To this end, we discuss the key variables and challenges for afforded abatement of VOCs through CPs/MOFs technologies. Hopefully, this review will help the scientific community set future directions for the advancement of CPs/MOFs techniques for the effective management of diverse environmental issues.

Constructing a stable cobalt-nitrogen-carbon air cathode from coordinatively unsaturated zeolitic-imidazole frameworks for rechargeable zinc-air batteries

Zeolitic-imidazole frameworks(ZIFs)derivations have widely emerged as an efficient air cathode of zinc-air batteries(ZABs)due to excellent bifunctional oxygen electrocatalysis performance.However,they are not stable enough for long-term operation of rechargeable ZABs because of weak association with current collector,especially under bending conditions for flexible ZAB devices.Here,we show that by purposely designing coordinatively unsaturated ZIFs via a facile morphology regulation,which can be chemically linked on acid-treated carbon cloth,a stable Co-N-C air cathode is therefore derived where Co nanoparticles(NPs)are uniformly confined within the Co-N-C matrix on carbon cloth(Co/Co-N-C/CC).Specifically,when without being stabilized from carbon cloth,the pyrolysis of ZIFs with different unsaturated coordination levels has a negligible impact on the bifunctional oxygen-catalyzed performance.The optimal Co/Co-N-C/CC catalyst assembled ZAB possesses a large open circuit voltage of 1.415 V and a high peak power density of 163 mW·cm^(−2) as well as excellent cycling durability upon 630 discharge–charge cycles with 61%voltage efficiency remained,largely exceeding those of a benchmark Pt/C-IrO_(2) catalyst assembled ZAB.The synergy between Co NPs and active Co-N-C sites via electronic interaction induces the outstanding bifunctional oxygen-catalyzed activity and cathode performance.The present work highlights the importance of unsaturated coordination structures in ZIFs precursors for the performance of derived nanostructures in integrated electrodes.

A new 8-connected self-penetrating metal-organic framework based on dinuclear cadmium clusters as secondary building units

A new metal-organic framework（MOF） based on metal clusters as secondary building units（SBU）,has been synthesized and structurally characterized.The reported MOF presents an interesting 8-connected self-penetrating coordination network based on dinuclear cadmium cluster with a 4^（24）·5·6~3 topology. Moreover,the thermal stability and luminescence property of this compound have been investigated.

Eagle Vision-Based Coordinate Landing Control Framework of Unmanned Aerial Vehicles on an Unmanned Surface Vehicle

The coordinate landing control of the unmanned aerial vehicles(UAVs)is a key technology to expand the cooperation between the UAVs and the unmanned surface vehicle(USV).This paper provides an eagle vision-based coordinate landing control framework for the UAV swarm landing on a USV.Back-stepping controller is designed to guarantee that the tracking errors in both of the approaching stage and the landing stage converge to zero.Eagle vision is applied in the visual navigation to improve the landing accuracy.The experiment verified the feasibility of the proposed method.

Light/pH dual controlled drug release"nanocontainer"alleviates tumor hypoxia for synergistic enhanced chemotherapy,photodynamic therapy and chemodynamic therapy

Photodynamic therapy(PDT)has significant advantages in treating primary tumors.However,the hypoxic tumor microenvironment hinders the generation of sufficient reactive oxygen species during PDT to effectively kill tumor cells,further greatly limiting the applications of PDT in cancer treatment.Herein,we reported a temperature/pH dual controlled drug delivery system LPC@PCN@PDA/Fe^(3+)-AS1411 based on a porous coordination network(PCN(Mn))coated with polydopamine(PDA)and modified with an aptamer AS1411.β-lapachone(LPC)was loaded inside the PCN(Mn)framework,and Fe^(3+)was attached to the surface of the PDA coating.These nanoparticles(NPs)exhibited excellent multimodal cancer therapeutic effects and tumor targeting ability with their photo-and chemodynamic properties.The therapeutic effect can be enhanced by the production of sufficient oxygen by the internal hydrogen peroxide,which improves the photodynamic effect of the photosensitizer PCN(Mn)and the chemotherapy effect ofβ-lapachone.Notably,the conversion of Fe^(2+)to Fe^(3+)in the tumor cells exerts the Fenton effect,which generates hydroxyl radicals that cause lipid peroxidation in tumor cells and induce apoptosis,thus enhancing the chemodynamic therapeutic effect.In vitro and in vivo experiments revealed that the NPs demonstrated specific tumor targeting,excellent inhibition effect on tumor growth,and biocompatibility.Together,our findings can help develop an intelligent multifunctional therapeutic nanoplatform for cancer therapy.