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Ghiasi Moaser A, Khoshnavazi R. Facile synthesis and characterization of Fe3O4@MgAl-LDH@STPOM nanocomposites for highly enhanced and selective degradation of methylene blue. NEW J CHEM 2017. [DOI: 10.1039/c7nj00792b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel layered and cauliflower-like Fe3O4@MgAl-LDH@Ce3W18 nanocomposite has been synthesized by the selective ion-exchange method.
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2
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Berg JM, Gaunt AJ, May I, Pugmire AL, Reilly SD, Scott BL, Wilkerson MP. Unexpected Actinyl Cation-Directed Structural Variation in Neptunyl(VI) A-Type Tri-lacunary Heteropolyoxotungstate Complexes. Inorg Chem 2015; 54:4192-9. [DOI: 10.1021/ic5024345] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- John M. Berg
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Andrew J. Gaunt
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Iain May
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Alison L. Pugmire
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sean D. Reilly
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L. Scott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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3
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Ma P, Wan R, Si Y, Hu F, Wang Y, Niu J, Wang J. Double-malate bridging tri-lanthanoid cluster encapsulated arsenotungstates: syntheses, structures, luminescence and magnetic properties. Dalton Trans 2015; 44:11514-23. [DOI: 10.1039/c5dt01323b] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five members of a new family of POM-ligated double-malate bridging tri-lanthanoid clusters have been synthesized and characterized.
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Affiliation(s)
- Pengtao Ma
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Rong Wan
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Yanan Si
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Feng Hu
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Yueyan Wang
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingyang Niu
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingping Wang
- Key Laboratory of Polyoxometalate Chemistry of Henan Province
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
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4
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Synthesis, characterization and catalytic activity of a new sandwich-type tungstophosphate functionalized by carboxyethyltin. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2012.12.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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The influence of lanthanide ionic radii on the formation and stability of the complexes: Synthesis, chemical properties and characterization of [(β-SiW9O34)2(H2OM)3CO3]13− M=Eu3+ and Gd3+. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.01.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Khoshnavazi R, Tayamon S. Effect of ionic radii of lanthanide ions on reaction with A-PW9 . Synthesis and characterization of [(A-PW9O34)2(H2OM)3CO3]11− (M = Eu3+, Gd3+) and [(W5O18)2M]9− (M = Pr3+, Nd3+). J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.511664] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Roushan Khoshnavazi
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416, Sanandaj, Iran
| | - Shahedeh Tayamon
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416, Sanandaj, Iran
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Khoshnavazi R, Gholamyan S. Sandwich-type polyoxoanions based on A-β-GeW9 . Synthesis and characterization of [(A-β-GeW9O34)2(MOH2)3CO3]13− (M = Y3+, Sm3+, and Yb3+) polyoxoanions. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.511666] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Roushan Khoshnavazi
- a Department of Chemistry , University of Kurdistan , PO Box 66135-416, Sanandaj, Iran
| | - Sahar Gholamyan
- a Department of Chemistry , University of Kurdistan , PO Box 66135-416, Sanandaj, Iran
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Hu YJ, Ou-Yang Y, Bai AM, Zhao RM, Liu Y. A series of novel rare Earth molybdotungstosilicate heteropolyoxometalates binding to bovine serum albumin: spectroscopic approach. Biol Trace Elem Res 2010; 136:8-17. [PMID: 19760352 DOI: 10.1007/s12011-009-8521-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Accepted: 08/31/2009] [Indexed: 11/26/2022]
Abstract
Heteropolyoxometalate complexes have been widely applied in many fields. In this paper, the interaction between a series of novel rare earth molybdotungstosilicate heteropolyoxometalates, K(10)H(3)[Ln(SiMo(6)W(5)O(39))(2)].xH(2)O (abbr. LnW(5), Ln = Pr (x = 30), Gd (x = 29), Dy (x = 28), and Yb (x = 31)), and bovine serum albumin (BSA) was investigated by spectroscopic approach under the physiological conditions. In the mechanism discussion, it was proved that the fluorescence quenching of BSA by LnW(5) is a result of the formation of LnW(5)-BSA complex. Fluorescence quenching constants were determined using the Stern-Volmer equation to provide a measure of the binding affinity between LnW(5) and BSA. The binding affinity ranked in the order GdW(5) > DyW(5) > PrW(5) > YbW(5). The results of thermodynamic parameters DeltaG, DeltaH, and DeltaS at different temperatures indicate that van der Waals interactions and hydrogen bonds play a major role for LnW(5)-BSA association. Furthermore, the distance r between donor (BSA) and acceptor (LnW(5)) was obtained according to fluorescence resonance energy transfer.
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Affiliation(s)
- Yan-Jun Hu
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemistry, Hubei Normal University, Huangshi, 435002, People's Republic of China
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Khoshnavazi R, Bahrami L, Tayamon S, Gholamyan S, Davoodi H, Shahsavar M. Synthesis and structure of sandwich-type polytungstoarsenates of [As2W18Cd4(H2O)2O68]10− and [As2W18Zn2(CdOH2)2O68]10−. J COORD CHEM 2009. [DOI: 10.1080/00958970903154488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Roushan Khoshnavazi
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416 , Sanandaj , Iran
| | - Leila Bahrami
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416 , Sanandaj , Iran
| | - Shahedeh Tayamon
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416 , Sanandaj , Iran
| | - Sahar Gholamyan
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416 , Sanandaj , Iran
| | - Hamideh Davoodi
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416 , Sanandaj , Iran
| | - Marzieh Shahsavar
- a Department of Chemistry , University of Kurdistan , P.O. Box 66135-416 , Sanandaj , Iran
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Yavari R, Ahmadi SJ, Huang YD, Bagheri G. Synthesis, Ion Exchange Properties, and Applications of Amorphous Cerium(III) Tungstosilicate. SEP SCI TECHNOL 2008. [DOI: 10.1080/01496390802215024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Khoshnavazi R, Sadeghi R, Bahrami L. High stable sandwich-type polyoxometallates based on . Synthesis, chemical properties and characterization of [(A-β-SiW9O34)2(MOH2)3CO3]13− (M=Y3+ and Yb3+). Polyhedron 2008. [DOI: 10.1016/j.poly.2008.02.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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A novel sandwich polyoxometalate linked by mixed RE/TM interlayer: [Fe(phen)3]2[As2W18Fe2{Y(OH2)2}2O68]·6.5H2O. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Boglio C, Lenoble G, Duhayon C, Hasenknopf B, Thouvenot R, Zhang C, Howell RC, Burton-Pye BP, Francesconi LC, Lacôte E, Thorimbert S, Malacria M, Afonso C, Tabet JC. Production and Reactions of Organic-Soluble Lanthanide Complexes of the Monolacunary Dawson [α1-P2W17O61]10- Polyoxotungstate. Inorg Chem 2006; 45:1389-98. [PMID: 16441151 DOI: 10.1021/ic051679g] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The incorporation of lanthanides into polyoxometalates provides entry to new classes of potentially useful materials that combine the intrinsic properties of both constituents. To utilize the [alpha1-Ln(H2O)4P2W17O61]7- species in applications of catalysis and development of luminescent materials, the chemistry of this family of lanthanide polyoxometalates in organic solvents has been developed. Organic-soluble polyoxometalate-lanthanide complexes TBA5H2[alpha1-Ln(H2O)4P2W17O61] (Ln = La(III), Sm(III), Eu(III), Yb(III)) were prepared and characterized by elemental analysis, acid-base titration, IR, 31P NMR, and mass spectrometry. The synthetic procedure involves a cation metathesis reaction in aqueous solution under strict pH control. A solid-liquid-phase transfer protocol yielded a unique species (TBA)8K3[Yb(alpha1-YbP2W17O61)2] with three ytterbium ions and two [alpha1-P2W17O61]10- polyoxotungstates. A centrosymmetric dimeric complex [{alpha1-La(H2O)4P2W17O61}2]14- was crystallized from aqueous solution and characterized by X-ray diffraction. ESI mass spectral analysis of the complexes TBA5H2[alpha1-Ln(H2O)4P2W17O61] shows that similar dimers exist in organic solution, in particular for the early lanthanides. Fragmentation in the mass spectrometer of the complexes from dry acetonitrile solution involves double protonation of an oxo ligand and loss of one water molecule. Low mass tungstate fragments combine into [(WO3)n]2- (n = 1-5) ions and their condensation products with phosphate. Reaction of TBA5H2[alpha1-Eu(H2O)4P2W17O61] with 1,10-phenanthroline or 2,2'-bipyridine showed an increase of the europium luminescence. This result is explained by the formation of a ternary complex of [alpha1-Eu(H2O)4P2W17O61]7- and two sensitizing ligands.
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Affiliation(s)
- Cécile Boglio
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR CNRS 7071, Institut de Chimie Moléculaire FR 2769, Université Pierre et Marie Curie, Case Courrier 42, 4 place Jussieu, 75005 Paris, France
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Zhang X, Zhang C, Guo H, Huang W, Polenova T, Francesconi LC, Akins DL. Optical Spectra of a Novel Polyoxometalate Occluded within Modified MCM-41. J Phys Chem B 2005; 109:19156-60. [PMID: 16853470 DOI: 10.1021/jp052858m] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel polyoxometalate ([(Eu2PW10O38)4(W3O8(H2O)2(OH)4)]22-), also referred to herein as Eu8P4W43, has been immobilized inside the channels of MCM-41 mesoporous molecular sieve material by means of the incipient wetness method. For proper host-guest interaction, amine groups were introduced into the system as a result of an aminosilylation procedure. A stable and integrated Eu8P4W43 polyoxometalate was shown to be formed inside the channels of the modified MCM-41. The products were characterized by XRD, UV-vis absorption, emission, Raman excitation, Raman, and 31P solid-state NMR measurements. Infrared and Raman spectra of the polyoxometalate/MCM-41 composite systems are interpreted as showing spectral shifts due to site induced electrostatic interactions. The photoluminescent behavior of the composite at room temperature indicates a characteristic Eu3+ emission pattern corresponding to 5D0- 7F(J) transitions. A strong photoluminescence suggests the potential utility of the polyoxometalate as a luminescent material.
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Affiliation(s)
- Xiaoming Zhang
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York (CUNY), New York, New York 10031, USA
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