A Polyoxometalate Compound with 1D Chain Built up of Lacunary Wells-Dawson Polyoxotungstate and Eu(Ⅲ)

【中文摘要】 在水溶液条件下以六缺位的[H2P2W12O48)]12-和Eu髥为反应前躯体得到了1个新的多金属氧酸盐化合物[Eu3(H2O)17(α2-HP2W17O61)].5H2O(1),对其进行了元素分析、红外光谱、热重、荧光等表征,并用X-射线单晶衍射测定了它的晶体结构。化合物1含有双支撑的多阴离子簇[{Eu(H2O)7}2{Eu(H2O)3(α2-P2W17)}2]8-,并进一步通过Eu髥连接形成了延c轴方向的一维链。室温条件下的荧光光谱研究表明:化合物1显示了强的红光发射。 【英文摘要】 A polyoxometalate compound built on lacunary Wells-Dawson polyoxotungstate and Eu(Ⅲ) cation,[Eu 3(H 2 O) 17(α 2-HP 2 W 17 O 61)]·5H 2 O(1),has been synthesized by conventional solution method and characterized by elemental analysis,IR spectroscopy and single crystal X-ray diffraction.Compound 1 shows a bisupporting polyoxometalate cluster structure where two {Eu(H 2 O) 7 } 2 3+ fragments are supported on the polyoxometalate [{Eu(H 2 O) 3(α 2-P 2 W 17)} 2 ] 14-.1 displays a 1D chain structure built up of bis..

Atmospheric-pressure Plasma Interaction with Thymidine in Aqueous Solution

胸腺嘧啶(THyMInE)是遗传物质的组成成分之一,为了研究等离子体对遗传胸腺嘧啶(THyMInE)的作用过程,利用大气压等离子体对作为遗传物质的胸腺嘧啶(THyMInE)及对应的胸腺嘧啶脱氧核苷(THyMIdInE)进行处理,为了避免空气对遗传物质的影响,采用水中放电装置进行了相关研究。研究结果表明:不同气体等离子体处理后,胸腺嘧啶脱氧核苷会分解为胸腺嘧啶,且氮气等离子体处理时分解速率快于氩气等离子体处理;另外,空气等离子体与氧气等离子体处理后,胸腺嘧啶脱氧核苷会分解产生两种新产物,分别为胸腺嘧啶+OH和胸腺嘧啶脱氧核苷+OH。该研究对了解大气压等离子体对细菌失活的机制具有一定指导作用,同时对等离子体与生物体作用有着积极的指导意义。The cold atmospheric-pressure plasmas have great application prospects in the fields of biomedicine, such as killing virus, sterilization, cancer cells ablation, and surface treatment of organism tissue, etc.Some reports have indicated that the cold atmospheric-pressure plasmas will modify the genetic material(RNA and DNA) in organism tissue.Thymine is one of the components of genetic material.In this paper, in order to study the effect of plasma on genetic Thymine process, Thymine and Thymidine in the aqueous solution were treated by plasma.In order to avoid the effect of air on experiments, a new discharge device was designed to generate large-area plasma in aqueous media.The results show that,after different gas plasma processing, Thymidine decomposes for thymine; After air plasma and oxygen plasma treatment, Thymidine can produce two new decomposition products: Thymine +OH and Thymidine +OH.The study of DNA degration caused by plasma has certain instruction function in biomedicine.福建省自然基金(2014J01025); 国家自然科学基金(11275261)~

Construction of Organic-Inorganic Hybrid from Dawson-Type Tungstophosphate and Tetranuclear Copper Complex

通过水热合成得到了一个新颖的包含四核铜配合物的无机-有机杂化化合物[CuCl(H2O)4)][CuCl(H2O)(PHEn)][{(CuPHEn)2Cl2}2(bdC)]2[P2W18O62]·5H2O(1)(PHEn=1,10-PHEnAnTHrOlInE和bdC=1,4-bEnzEnEdICArbOXylATE),对其进行了元素分析、红外光谱、热重、电化学等表征,并用X-射线单晶衍射测定了它的晶体结构。化合物1含有由Cl和bdC桥连的四核铜配合物阳离子[{(CuPHEn)2Cl2}2(bdC)]2+。此外,化合物1的电化学研究表明其对亚硝酸的还原具有很好的电催化活性。A novel hybrid compound [CuCl(H2O)4)] [CuCl(H2O)(Phen)] [{(CuPhen)2Cl2}2(bdc)]2[P2W18O62]·5H2O(1)(Phen=1,10-phenanthroline and bdc=1,4-benzenedicarboxylate), containing multinuclear CuⅡcomplex cations, has been obtained in hydrothermal conditions and characterized by IR, elemental, thermogravimetric, electrochemical and single-crystal X-ray diffraction analysis.The main structural feature to this compound is the copper-Phen complex moieties which compose new tetranuclear copper-Phen complex cation [{(CuPhen)2Cl2}2(bdc)]2+bridged by Cl and bdc ligands.Furthermore, a compound 1-modiffied carbon paste electrode(1-CPE) displays the good electrocatalytic activity toward the reduction of nitrite.CCDC: 952036

Probing the electronic properties of W3Ox -/0 (x = 0-2) and W32- clusters: The aromaticity of W3 and W32-

Density functional theory (DFT) calculations are employed to investigate the structural and electronic properties of bare tritungsten clusters (W 3, W3-, W32-) and tritungsten oxide clusters W3Ox-/0 (x = 1, 2). Generalized Koopmans' theorem is applied to predict the vertical detachment energies and simulate the photoelectron spectra (PES) for W3O x- (x = 0-2) clusters. Extensive DFT calculations are performed in search of the lowest energy structures for both the anions and the neutrals. The bare tritungsten clusters are predicted to be triangular structures with D3h (3A1′), C 2v (2A1) and D3h (1A 1′) symmetry for W3, W3- and W32-, respectively. For W3O- and W3O clusters, the oxygen atom occupies the terminal site, while the next added oxygen atom is found to be a bridging one in both W3O 2- and W3O2 clusters. Molecular orbital analyses are carried out to elucidate the chemical bonding of these clusters and provide insights into the sequential oxidation from W 3- to W3O2-. Partial σ- and δ-aromaticity are revealed in the neutral W3 (D3h, 3A1′), while the anion W 32- (D3h, 1A1′) possesses only δ-aromaticity. ? 2013 American Chemical Society

Highly Effective Inactivation of Pseudomonas sp HB1 in Water By Atmospheric Pressure Microplasma Jet Array

By using an atmospheric pressure microplasma jet array device driven by a.c. voltage with repetition rate of several kilohertz, we were able to inactivate the resistant Pseudomonas sp HB1 cells in aqueous solution. Measurements showed that all Pseudomonas sp. cells in a suspension of 80 mL with the concentration of similar to 10(8) CFU (Colony-Forming Units) were killed within a treatment time of 6 min. Rather than O radicals, OH radicals or charged species were supposed to play the most important role in the plasma inactivation process by this method. This design can provide an effective mode of killing the resistant microorganism in water

Experimental study of treating discarded circuit boards by using the converging - Extended anode channel plasma torch

Conference Name:1st International Conference on Energy and Environmental Protection, ICEEP 2012. Conference Address: Hohhot, China. Time:June 23, 2012 - June 24, 2012.In this paper, some discarded circuit boards in the plasma incinerator were incinerated by the converging - extended anode channel plasma torch, whose work principle and composition was described, and two experimental results were described, finally, the percentage of four major exhaust gas (CO, NO, SO 2, O2) was reported, showing a good prospect on treating electronic waste with using the plasma torch. 漏 (2012) Trans Tech Publications

Construction of Organic-Inorganic Hybrid from Dawson-Type Tungstophosphate and Tetranuclear Copper Complex

A novel hybrid compound [CuCl(H2O)(4))][CuCl(H2O)(Phen)][{(CuPhen)(2)Cl-2}(2)(bdc)](2)[P2W18O62]center dot 5H(2)O (1) (Phen=1,10-phenanthroline and bdc=1,4-benzenedicarboxylate), containing multinuclear Cu-II complex cations, has been obtained in hydrothermal conditions and characterized by IR, elemental, thermogravimetric, electrochemical and single-crystal X-ray diffraction analysis. The main structural feature to this compound is the copper-Phen complex moieties which compose new tetranuclear copper-Phen complex cation [{(CuPhen)(2)Cl-2}(2)(bdc)](2+) bridged by Cl and bdc ligands. Furthermore, a compound 1-modiffied carbon paste electrode (1-CPE) displays the good electrocatalytic activity toward the reduction of nitrite. CCDC: 952036