Yan-Fei Qi

Jilin University, Yung-chi, Jilin Sheng, China

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Publications (11)21.83 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Reaction of a flexible ligand with cobalt salt in the presence of polyoxovanadate produces a new composite solid, Co2(btx)4V4O12, 1 (btx = 1,4-bis(triazol-1-ylmethyl)benzene). The structure of 1 was determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR spectrum, and TG analysis. Compound 1 exhibits a 3-D 4,6-connected self-catenated net constructed from [V4O12]4− building blocks and the {Co(btx)2}2+ 3-D metal-organic cation polymer. The electronic properties of 1 have been investigated.
    Journal of Coordination Chemistry 01/2013; 66(7). · 1.80 Impact Factor
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    ABSTRACT: Silver nanoparticles (AgNPs) are being used widely and increasingly in various products and medical supplies due to their antibacterial activity. However, little is known about the impacts of the AgNPs. Herein, The primary purpose of this study was to investigate the cytotoxic effect of AgNPs in the human liver cell line (HL-7702). The water-soluble α-Methoxy-poly (ethylene glycol)-ω-mercapto (mPEG-SH)-coated AgNPs (40 nm) were synthesized, which showed superior stabilization and uniform dispersion in culture medium. The effect of mPEG-SH-coated silver nanoparticles on cell viability, leakage of lactate dehydrogenase (LDH), oxidative stress, mitochondrial membrane potential (MMP), and cell cycle was evaluated after the cells were treated with nanoparticles. The results showed that the coated AgNPs could be taken up by cells, decreased cell viability in dose- and time-dependent manners at dosage levels between 6.25 and 100.00 μg/mL, caused membrane damage (LDH leakage), and decreased the activities of superoxide dismutase and glutathione peroxides. The level of malondialdehyde, an end product of lipid peroxidation, was also increased in AgNPs-exposed cells. Moreover, flow cytometric analysis showed that AgNP exposure decrease MMP and cause G₂/M phase arrest. Thus, our data suggest that mPEG-SH-coated AgNPs have the potential toxicity that is associated with oxidative stress, apoptosis, and DNA damage.
    Cell Biology and Toxicology 03/2012; 28(4):225-37. · 2.34 Impact Factor
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    ABSTRACT: A structural determined heteropolytungstate, [K(4)(H(2)O)(8)Cl][K(4)(H(2)O)(4)PTi(2)W(10)O(40)]·NH(2)OH 1, has been synthesized and evaluated for in vitro antiviral activities against hepatitis B (HBV) and SARS virus. The identity and high purity of compound 1 were confirmed by elemental analysis, NMR, IR analysis and single-crystal X-ray diffraction. The compound 1, evaluated in HepG 2.2.15 cells expressing permanently HBV, significantly reduced the levels of HBV antigens and HBV DNA in a dose-dependent and time-dependent manner. EC(50) values were determined to be 54μM for HBeAg, 61μM for HBsAg and 2.66μM for supernatant HBV DNA, as compared to 1671, 1570, 169μM, respectively, for the commercially-available hepatitis B drug adefovir dipivoxil (ADV). Intracellular cccDNA, pgRNA and HBcAg were also found to be decreased by compound 1 in a concentration-dependent manner. Cytotoxicity results showed that compound 1 has low toxicity in HepG 2 cells with CC(50) value of 515.20μM. The results indicate that compound 1 can efficiently inhibit HBV replication in HepG 2.2.15 cells line in vitro. Additionally, compound 1 also shows high anti-SARS activity at an EC(50) of 7.08μM and toxicity with a CC(50) of 118.6μM against MDCK cells.
    Antiviral research 11/2011; 93(1):118-25. · 3.61 Impact Factor
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    ABSTRACT: The simultaneous use of bicarboxylate- and bipyridine-containing linear ligands to react with d10 metals affords four new polymeric compounds, [Zn(cis-chdc)(bpp)]·6H2O (1), [Zn(cis-chdc)(bpmp)] (2), [Cd2(cis-chdc)2(bpmp)(H2O)2] (3) and [Cd3(tp)3(bpp)2]•2DMF•6H2O (4) (H2chdc = 1,4-cyclohexanedicarboxylic acid; bpp = 1,3-bis(4-pyridyl)propane; bpmp = N,N′-bis(4-pyridylmethyl)piperazine; H2tp = terephthalic acid), which have been structurally characterized by elemental analysis, IR, TG, powder X-ray diffraction and single-crystal X-ray diffraction. Compound 1 possesses a 1-D ladderlike structural feature, compounds 2 and 3 show two different 2-D wavelike networks with the same (4•4) network topology, and compound 4 exhibits a 3-D open framework with (424•64) framework topology (similar to the CsCl-type body-centered cubic lattice). The structural features and the dimension evolution of the four compounds, along with the influence of nodes and mixed linear ligands are presented and discussed. The fluorescent properties of the four compounds are also investigated.
    CrystEngComm 04/2011; 13(7):2542-2549. · 3.88 Impact Factor
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    ABSTRACT: A new cobalt–vanadium composite solid, Co3(btx)5(H2O)V8O231 (btx = 1,4-bis(triazol-1-ylmethyl)benzene) has been synthesized. Compound 1 exhibits a novel three-dimensional (3D) 4, 6-connected self-catenated net constructed from novel [V8O23]6− building blocks and the {Co3(btx)5(H2O)2}6+ 3D metal–organic cation polymer. The magnetic study and electronic property of 1 have also been investigated.
    Inorganic Chemistry Communications 03/2010; 13(3):384-387. · 2.02 Impact Factor
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    ABSTRACT: Two novel Zn6 sandwiched polyoxometalates, [Zn(phen)2]2[Zn6(phen)2(AsW9O33)2] (1) and K11H2Zn[(ZnCl)6(AsW9O33)2]Cl·27H2O (2), have been synthesized and characterized by X-ray single-crystal analysis, IR, and fluorescence spectrum. The polyoxoanions in both compounds can be characterized as two {AsIIIW9O33}9− moieties linked through Zn6 transition-metal cluster to form the sandwich-type polyoxotungstates. In compound 1, six Zn atoms in the equatorial part of the polyoxoanions have two different coordination environments: four Zn sites exhibit distorted octahedral geometry, and the other two Zn atoms show square pyramidal geometry. In the polyoxoanion of compound 2, all Zn atoms are square pyramidal geometry, and held together to form a hexagonal metallocycle by edge-sharing oxygen atoms. In this Zn6 cluster, the shortest distance of neighboring Zn⋯Zn is 3.147(1)Å. In addition, compound 2 exhibits purple photoluminescence at room temperature.
    Inorganica Chimica Acta - INORG CHIM ACTA. 01/2009; 362(2):453-457.
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    ABSTRACT: The first {P(2)W(12)}-based trimeric polyoxotungstates encapsulating various "guest" transition-metal and alkali-metal ions have been reported, exhibiting potentially aqua-ligand-induced capability of "trapping" metal ions.
    Chemical Communications 05/2008; · 6.38 Impact Factor
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    ABSTRACT: ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
    ChemInform 01/2008; 39(26).
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    ABSTRACT: Two novel compounds based on saturated Wells–Dawson polyoxometalate and copper–organonitrogen coordination polymer, (NH4)3(4,4′-H2bipy)[CuI(4,4′-bipy)]7[P2W18O62]2·10H2O 1 and [CuII(en)(2,2′-bipy)]3[P2W18O62]·3H2O 2 (en=ethylenediamine, bipy=bipyridine), have been hydrothermally synthesized. The structure of 1 represents the first 2-D network consisted of saturated Wells–Dawson polyoxoanions and transition–metal coordination polymers. Compound 2 is a novel Wells–Dawson polyoxoanion supported by two copper(II) complex fragments with mixed en and 2,2′-bipy ligands in a single W3O13 triplet.
    Journal of Molecular Structure - J MOL STRUCT. 01/2007; 837(1):23-29.
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    ABSTRACT: Four novel organic–inorganic hybrid arsenic-vanadate complexes, [Cu(phen)][(AsO4)(V 3O7)(H2O)] (1), [Cu(en)2]2[As8V14O42(H2O)] · 2.5H2O (2), [M(1,10-phen)3]2[As8V14O42(H2O)0.5] · 0.5H2O (M = Mn, 3, Cd, 4) (1,10-phen = 1,10-phenanthroline) have been hydrothermally synthesized for the first time and characterized by elemental analyses, XPS spectra, EPR spectra, IR spectra, TG analyses and single crystal X-ray diffraction. The structure of compound 1 consists of arsenic vanadate ribbons coordinated by the [Cu(phen)] complex, while compounds 2 to 4 possess a spherical [As8 V14 O42] cage with H2O molecules encapsulated. The unexpected preparation 1 and the synthesis of compounds 2 to 4 on the basis of same polyoxoanion structures show that the pH value of the reaction plays a crucial role in controlling the basic architectures.
    Journal of Coordination Chemistry 01/2007; 60(13):1403-1418. · 1.80 Impact Factor
  • Australian Journal of Chemistry - AUST J CHEM. 01/2007; 60(11).

Publication Stats

31 Citations
21.83 Total Impact Points

Institutions

  • 2010–2013
    • Jilin University
      • School of Public Health
      Yung-chi, Jilin Sheng, China
  • 2007–2008
    • Northeast Normal University
      • Institute of Polyoxometalate Chemistry
      Hsin-ching, Jilin Sheng, China