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Luo S, Xiao W, Sun X, Zheng P. Regulation mechanism of the solvent coligands on the magnetic properties of azido-Cu(II) complexes by mixed carboxylate/alkanols ligands: A theoretical exploration. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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2
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Theoretical Study on Magnetic Interaction in Pyrazole-Bridged Dinuclear Metal Complex: Possibility of Intramolecular Ferromagnetic Interaction by Orbital Counter-Complementarity. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6010010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A possibility of the intramolecular ferromagnetic (FM) interaction in pyrazole-bridged dinuclear Mn(II), Fe(II), Co(II), and Ni(II) complexes is examined by density functional theory (DFT) calculations. When azide is used for additional bridging ligand, the complexes indicate the strong antiferromagnetic (AFM) interaction, while the AFM interaction becomes very weak when acetate ligand is used. In the acetate-bridged complexes, an energy split of the frontier orbitals suggests the orbital counter-complementarity effect between the dxy orbital pair, which contributes to the FM interaction; however, a significant overlap of other d-orbital pairs also suggests an existence of the AFM interaction. From those results, the orbital counter-complementarity effect is considered to be canceled out by the overlap of other d-orbital pairs.
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Baryshnikova AT, Minaev BF, Baryshnikov GV, Ågren H. Computational study of the structure and magnetic properties of the weakly-coupled tetranuclear square-planar complex of Cu(II) with a tetraporphyrin sheet. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Fraser HWL, Smythe L, Dey S, Nichol GS, Piligkos S, Rajaraman G, Brechin EK. A simple methodology for constructing ferromagnetically coupled Cr(iii) compounds. Dalton Trans 2018; 47:8100-8109. [PMID: 29877529 DOI: 10.1039/c8dt01963k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A large family of chromium(iii) dimers has been synthesised and magneto-structurally characterised using a combination of carboxylate and diethanolamine type ligands. The compounds have the general formula [Cr2(R1-deaH)2(O2CR2)Cl2]Cl where R1 = Me and R2 = H (1), Me (2), CMe3 (3), Ph (4), 3,5-(Cl)2Ph (5), (Me)5Ph (6), R1 = Et and R2 = H (7), Ph (8). The compound [Cr2(Me-deaH)2Cl4] (9) was synthesised in order to study the effect of removing/adding the carboxylate bridge on the observed magnetic behaviour. Direct current (DC) magnetic susceptibility measurements showed ferromagnetic (FM) exchange interactions between the Cr(iii) centres in the carboxylate bridged family with coupling constants in the range +0.37 < J < +8.02 cm-1. Removal of the carboxylate to produce the dialkoxide-bridged compound 9 resulted in antiferromagnetic (AFM) exchange between the Cr(iii) ions. DFT calculations reveal the ferromagnetic exchange is the result of an orbital counter-complementarity effect occuring upon introduction of the bridging carboxylate.
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Affiliation(s)
- Hector W L Fraser
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ Scotland, UK.
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Shcherbakov IN, Popov LD, Levchenkov SI, Vlasenko VG, Aleksandrov GG, Tupolova YP, Lukov VV. Switching of the exchange interaction character in the binuclear copper(II) complexes based on the hetaryl derivatives of 1,3-diaminopropanol-2. RUSS J COORD CHEM+ 2017. [DOI: 10.1134/s1070328417110082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Pankov IV, Shcherbakov IN, Tkachev VV, Levchenkov SI, Popov LD, Lukov VV, Aldoshin SM, Kogan VA. The magnetic exchange interaction in bi- and tetranuclear copper(II) complexes with the bis -azomethine of 1,3-diaminopropanol-2 and 4-hydroxy-3-formylcoumarin with an azide exogenous bridge. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Baryshnikov GV, Minaev BF, Baryshnikova AT, Ågren H. A computational study of structural and magnetic properties of bi- and trinuclear Cu(II) complexes with extremely long Cu---Cu distances. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2017.04.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Lukov VV, Shcherbakov IN, Levchenkov SI, Popov LD, Pankov IV. Peculiarities of magnetic exchange in bi- and tetranuclear copper(II) complexes with organic ligands based on 1,3-diaminopropan-2-ol. RUSS J COORD CHEM+ 2017. [DOI: 10.1134/s1070328417010055] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Fondo M, Doejo J, García-Deibe AM, Sanmartín-Matalobos J, Vicente R, El-Fallah MS, Amoza M, Ruiz E. Predetermined Ferromagnetic Coupling via Strict Control of M-O-M Angles. Inorg Chem 2016; 55:11707-11715. [PMID: 27805394 DOI: 10.1021/acs.inorgchem.6b01739] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An imidazolidine-phenolate ligand HL yields quadruple-bridged (μ-NCNimidazolidine)2(μ-Ophenolate)2 ferromagnetic dinuclear nickel and cobalt complexes. Both kinds of bridges contribute to the ferromagnetic coupling, but the ferromagnetism of these samples is mainly ascribed to the double μ-Ophenolate links, on the basis of density functional theory calculations. These studies demonstrate not only that the short M-O-M angles of the M2O2 cores favors the parallel alignment of the electrons but also that these angles are the optimal ones for maximizing the ferromagnetic contribution in these complexes. And these acute angles, close to 90°, are predetermined by the geometrical constrictions imposed by the ligand itself. Thus, HL is an uncommon polydentate donor that induces ferromagnetism per se in its metal complexes by strict control of one geometric parameter, the M-O-M angle.
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Affiliation(s)
- Matilde Fondo
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Jesús Doejo
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Ana M García-Deibe
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Jesús Sanmartín-Matalobos
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
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Levchenkov SI, Shcherbakov IN, Popov LD, Uraev AI, Suponitskii KY, Zubenko AA, Ionov AM, Kogan VA. Effect of the nature of non-bridging donor atoms on the structure and magnetic properties of binuclear copper(II) complexes with heterocyclic azomethyne ligands. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476615010163] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yang EC, Liu ZY, Chen SH, Su YH, Zhang YY, Zhao XJ. Four linear Cu(II)3 subunit-based coordination polymers with various inter-subunit connections, spin ground-states and intra-/inter-subunit magnetic couplings. Dalton Trans 2015; 44:3190-9. [PMID: 25581907 DOI: 10.1039/c4dt03741c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Four new 4-amino-1,2,4-triazole (atr)-based coordination polymers, {[Cu2(atr)(H2O)(μ-OH)2(pa)]·H2O}n (), {[Cu3(atr)2(H2O)2(μ-OH)2(npa)2]·2H2O}n (), {[Cu3(atr)5(dca)(μ-OH)(ClO4)2](ClO4)2}n () and {[Cu3(atr)2(H2O)(μ3-OH)(μ-OH)2(spa)]·1.5H2O}n () (pa(2-) = phthalate, npa(2-) = 3-nitrophthalate, dca(-) = dicyanamide and spa(3-) = 4-sulfophthalate), were successfully obtained by varying the carboxylate- and cyanide-modified magnetic bridges. Structural determinations reveal that the former three samples are bent one-dimensional chains constructed from linear Cu(II)3 subunits and different inter-subunit connections. In , linear {Cu3(μ-N1,N2-atr)2(μ-OH)2}(4+) and {Cu3(μ-COO)2(μ-OH)2}(4+) subunits are alternately connected in a sharing-vertex manner to give a ferrimagnetic S = 1/2 spin ground-state. The linear {Cu3(μ-N1,N2-atr)2(μ-OH)2}(4+) building block of is repeatedly bridged by pairs of single-atom bridging carboxylate groups of the npa(2-) ligand leading to a paramagnetic S = 1/2 spin ground-state. By contrast, each linear {Cu3(μ-N1,N2-atr)4}(6+) core in is periodically propagated by four-fold heterobridges (μ-OH(-), μ-ClO4(-), μ-N1,N2-atr and μ-dca(-)) to generate an overall diamagnetic S = 0 spin ground-state. Complex is a three-dimensional pillared-layer framework composed of linear {Cu3(μ-N1,N2-atr)2(μ-OH)2}(4+)-based layers and ditopic spa(3-) connectors, which exhibits a ferrimagnetic S = 1/2 spin ground-state and a metamagnetic transition resulting from the competition between the weak interchain/interlayer antiferromagnetic interaction and the enhanced external magnetic field. In addition, different intra- and inter-subunit magnetic strengths are observed in with the coupling constants 182 < -Jintra < 43 and -127 < Jinter < 51.2 cm(-1). These interesting magnetostructural results are significant and helpful for the cyclic polyazolate-based magnetic materials.
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Affiliation(s)
- En-Cui Yang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
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12
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Shcherbakov IN, Levchenkov SI, Popov LD, Aleksandrov GG, Etmetchenko LN, Kogan VA. Binuclear copper(II) complex with bis(azomethine) based on 1,3-diaminopropan-2-ol and 4-hydroxy-3-formylcoumarin: Crystal structure and magnetic properties. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415020098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Liu ZY, Zhang HY, Yang EC, Liu ZY, Zhao XJ. A (3,6)-connected layer with an unprecedented adeninate nucleobase-derived heptanuclear disc. Dalton Trans 2015; 44:5280-3. [DOI: 10.1039/c4dt04020a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A (3,6)-connected layer with an adeninate nucleobase-derived CuII7 disc was reported, in which six spin-parallel CuII ions in the exterior of the disc are antiferromagnetically coupled with the central one to give an S = 5/2 ground-state.
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Affiliation(s)
- Zheng-Yu Liu
- College of Chemistry
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - Hong-Yun Zhang
- College of Chemistry
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - En-Cui Yang
- College of Chemistry
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - Zhong-Yi Liu
- College of Chemistry
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - Xiao-Jun Zhao
- College of Chemistry
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
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Binuclear copper(ii) and nickel(ii) complexes based on N,N′-bis(3-formyl-5-tert-butylsalicylidene)-1,3-diaminopropan-2-ol: physicochemical and theoretical study. Russ Chem Bull 2014. [DOI: 10.1007/s11172-014-0490-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Ruiz J, Mota AJ, Rodríguez-Diéguez A, Oyarzabal I, Seco JM, Colacio E. Rational design of ferromagnetic coupled diphenoxocarboxylate triply bridged dinuclear nickel(ii) complexes: orbital countercomplementarity of the bridging ligands. Dalton Trans 2012; 41:14265-73. [DOI: 10.1039/c2dt31643a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Colacio E, Perea-Buceta JE, Mota AJ, Brechin EK, Prescimone A, Hänninen M, Seppälä P, Sillanpää R. Touching the upper limit for ferromagnetic interactions in hetero-bridged dinuclear [Cu2II] complexes using a novel N5-dinucleating ligand bearing an endogenous monoatomic amido(R–NH−)-bridging group. Chem Commun (Camb) 2012; 48:805-7. [DOI: 10.1039/c1cc16590a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Rigamonti L, Forni A, Pievo R, Reedijk J, Pasini A. Synthesis, crystal structures and magnetic properties of dinuclear copper(ii) compounds with NNO tridentate Schiff base ligands and bridging aliphatic diamine and aromatic diimine linkers. Dalton Trans 2011; 40:3381-93. [DOI: 10.1039/c0dt01304h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Wang LL, Sun YM, Gao J, Lin XJ, Liu CB. Insights into the control of magnetic coupling in the Mn4(III) complex: from ferromagnetic to antiferromagnetic. Dalton Trans 2010; 39:10249-55. [PMID: 20922243 DOI: 10.1039/c0dt00382d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetic coupling interactions of a Mn(III)(4) system are investigated by calculations based on density functional theory combined with a broken-symmetry approach (DFT-BS). Three different interactions including ferromagnetic and antiferromagnetic coupling are concomitant in this complex. This magnetic phenomenon of the complex is due to the different bridging angles between the Mn(III) centers in the three different models and the orbital complementarity of the μ-pzbg and μ-OCH(3) bridging ligands, which is proven by the analyses of the molecular orbitals. According to the analyses of the magneto-structural correlation, it is revealed that the magnetic coupling interaction switches from ferromagnetic to antiferromagnetic at the point of the bridging angle Mn-(μ-OCH(3))-Mn = 99°, which is equal to the value in the origin crystal. Significant correlation between the magnetic properties and the component of the d orbitals in these systems shows that the larger contribution of the d(z(2)) orbital corresponds to the larger ferromagnetic coupling interaction. These results should provide a means to control the magnetic coupling of the polynuclear Mn systems, which is instructive for the design of new molecular magnetic materials.
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Affiliation(s)
- Li-Li Wang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China
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Wang LL, Sun YM, Yu ZY, Qi ZN, Liu CB. Theoretical Investigation on Triagonal Symmetry Copper Trimers: Magneto-Structural Correlation and Spin Frustration. J Phys Chem A 2009; 113:10534-9. [PMID: 19775173 DOI: 10.1021/jp9045897] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Li Wang
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China, College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China, and Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100 Shandong, P. R. China
| | - You-Min Sun
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China, College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China, and Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100 Shandong, P. R. China
| | - Zhang-Yu Yu
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China, College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China, and Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100 Shandong, P. R. China
| | - Zhong-Nan Qi
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China, College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China, and Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100 Shandong, P. R. China
| | - Cheng-Bu Liu
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China, College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China, and Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100 Shandong, P. R. China
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