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Water-stable porous Al24 Archimedean solids for removal of trace iodine. Nat Commun 2022; 13:6632. [PMID: 36333329 PMCID: PMC9636137 DOI: 10.1038/s41467-022-34296-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
In this paper, we report a unique type of core-shell crystalline material that combines an inorganic zeolitic cage structure with a macrocyclic host arrangement and that can remove trace levels of iodine from water effectively. These unique assemblies are made up of an inorganic Archimedean truncatedhexahedron (tcu) polyhedron in the kernel which possesses six calixarene-like shell cavities. The cages have good adaptability to guests and can be assembled into a series of supramolecular structures in the crystalline state with different lattice pore shapes. Due to the unique core-shell porous structures, the compounds are not only stable in organic solvents but also in water. The characteristics of the cages enable rapid iodine capture from low concentration aqueous I2/KI solutions (down to 4 ppm concentration). We have studied the detailed process and mechanism of iodine capture and aggregation at the molecular level. The facile synthesis, considerable adsorption capacity, recyclability, and β- and γ-radiation resistance of the cages should make these materials suitable for the extraction of iodine from aqueous effluent streams (most obviously, radioactive iodide produced by atomic power generation). The removal of radioactive elements is important to human health and sustainable development. Here, the authors reveal the synthesis of water-stable Archimedean solids based on the earth-abundant element for the fast removal of trace iodine.
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Yan C, Fan YZ, Chen L, Pan M, Zhang LY, Jiang JJ, Su CY. Time controlled structural/packing transformation and tunable luminescence of Cd(ii)-chloride-triBZ-ntb coordination assemblies: an experimental and theoretical exploration. CrystEngComm 2015. [DOI: 10.1039/c4ce01909a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Fang ZL, Wu XY, Yu RM, Lu CZ. A microporous cationic metal–organic framework constructed from metallamacrocycle-based nanocages: structures and luminescence properties. CrystEngComm 2014. [DOI: 10.1039/c4ce01185f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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4
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Connell TU, Schieber C, Silvestri IP, White JM, Williams SJ, Donnelly PS. Copper and Silver Complexes of Tris(triazole)amine and Tris(benzimidazole)amine Ligands: Evidence that Catalysis of an Azide–Alkyne Cycloaddition (“Click”) Reaction by a Silver Tris(triazole)amine Complex Arises from Copper Impurities. Inorg Chem 2014; 53:6503-11. [DOI: 10.1021/ic5008999] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy U. Connell
- School of Chemistry and Bio21
Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Christine Schieber
- School of Chemistry and Bio21
Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Ilaria Proietti Silvestri
- School of Chemistry and Bio21
Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Jonathan M. White
- School of Chemistry and Bio21
Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Spencer J. Williams
- School of Chemistry and Bio21
Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Paul S. Donnelly
- School of Chemistry and Bio21
Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
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Wei Y, Sun D, Yuan D, Liu Y, Zhao Y, Li X, Wang S, Dou J, Wang X, Hao A, Sun D. Pb(ii) metal–organic nanotubes based on cyclodextrins: biphasic synthesis, structures and properties. Chem Sci 2012. [DOI: 10.1039/c2sc20187a] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ma R, Chen C, Sun B, Zhao X, Zhang N. A new 3D metal–organic framework with (4, 8)-connected AlB2 topology constructed from coordinated evolution of a C3 symmetry ligand. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.06.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pan M, Wang XT, Ke GJ, Shi XJ, Li MQ. Covalently bonded Ln(III) hybrid materials showing dual properties of visible to near infrared photoluminescence and gas adsorption. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.03.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sun D, Zhang N, Xu QJ, Wei ZH, Huang RB, Zheng LS. Assembly of 1D, 2D and 3D silver(I) coordination polymers with nitrilotriacetate and 2-aminopyrimidyl mixed ligands. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.12.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Liu Y, Li K, Wei SC, Pan M, Su CY. Structural tuning of meso-hexamer, chiral-trimer and chiral-chain by anion directed supramolecular interactions. CrystEngComm 2011. [DOI: 10.1039/c1ce05210a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jiang JJ, Pan M, Liu JM, Wang W, Su CY. Assembly of Robust and Porous Hydrogen-Bonded Coordination Frameworks: Isomorphism, Polymorphism, and Selective Adsorption. Inorg Chem 2010; 49:10166-73. [DOI: 10.1021/ic1014384] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ji-Jun Jiang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Mei Pan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jun-Min Liu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Wei Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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Han L, Luo JH, Hong MC, Wang RH, Lin ZZ, Cao R. Synthesis and Crystal Structure of a Puckered Rhombus Grid-like Coordination Polymer with Bridging Ligand Containing Sulfanyl Linker. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20040220112] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Lei KW, Feng HM, Wen JL, Shu TP. Synthesis, structural characterization, and magnetic properties of the metallamacrocycle [Fe6(C11H11N2O3)6(C4H9NO)6]. MONATSHEFTE FUR CHEMIE 2010. [DOI: 10.1007/s00706-010-0322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Assembly of silver(I) coordination polymers incorporating pyromellitic acid and N-heterocyclic ligands. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.02.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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A novel 3D silver(I) coordination polymer exhibiting unprecedented μ3- and μ4-bonding modes of 2-aminopyrazines. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.12.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Soler M, Moorefield CN, Newkome GR. Hexameric Macrocyclic Architectures in Heterocyclic Chemistry. ADVANCES IN HETEROCYCLIC CHEMISTRY 2010. [DOI: 10.1016/s0065-2725(10)01001-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Geng X, Kong L, Zheng J, Feng Y, Su H. Hydrothermal Synthesis, Crystal Structures of Three New Metal(II) Complexes with 1-Adamantaneacetic Acid. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.201090004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Two new one-dimensional luminescent silver(I) and lead(II) coordination polymers containing the flexible ligand 2-(1H-imidazole-1-yl)acetic acid. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.09.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Shu TP, Chen ZJ, Feng HM, Wen JL, Lei KW. Novel 18-membered hexanuclear metallamacrocycle: Synthesis, crystal structure, and magnetic properties. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Cruz-Huerta J, Carillo-Morales M, Santacruz-Juárez E, Hernández-Ahuactzi IF, Escalante-García J, Godoy-Alcantar C, Guerrero-Alvarez JA, Höpfl H, Morales-Rojas H, Sánchez M. Macrocyclic Diorganotin Complexes of γ-Amino Acid Dithiocarbamates as Hosts for Ion-Pair Recognition. Inorg Chem 2008; 47:9874-85. [DOI: 10.1021/ic8007987] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jorge Cruz-Huerta
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Manuel Carillo-Morales
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Ericka Santacruz-Juárez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Irán F. Hernández-Ahuactzi
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Jaime Escalante-García
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Carolina Godoy-Alcantar
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Jorge A. Guerrero-Alvarez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Herbert Höpfl
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Hugo Morales-Rojas
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
| | - Mario Sánchez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, México, and Facultad de Química, Universidad de Guanajuato, Noria Alta s/n, C.P. 36050 Guanajuato, México
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Chen CL, Zhang Q, Yao JH, Zhang JY, Kang BS, Su CY. Assembly of 1D meso coordination polymer from a chiral mononuclear complex by N-deprotonation of the tris(2-benzimidazolyl) ligand. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.02.062] [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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22
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Wang Q, Yang R, Zhuang CF, Zhang JY, Kang BS, Su CY. Guest-Inclusion Behavior of Double-Strand 1D Coordination Polymers Based onN,N′-Type Schiff Base Ligands. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200701106] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhao X, Chen Z, Zhao B, Shi W, Cheng P. Crystal structures and luminescent properties of two novel coordination polymers containing Ln3+ and. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.08.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ikeda A, Nobusawa K, Hamano T, Kikuchi JI. Single-walled carbon nanotubes template the one-dimensional ordering of a polythiophene derivative. Org Lett 2007; 8:5489-92. [PMID: 17107054 DOI: 10.1021/ol062187q] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have used a mechanochemical high-speed vibration milling (HSVM) technique to solubilize single-walled carbon nanotubes (SWNTs) in organic solvents through the formation of complexes between the SWNTs and a polythiophene (PT) derivative. This HSVM approach is superior to the conventional sonication method used to solubilize SWNTs in organic solvents. Moreover, we found that in these supramolecular complexes the PT chains were ordered one-dimensionally on the SWNT surfaces in organic solvents. [structure: see text].
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Affiliation(s)
- Atsushi Ikeda
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan.
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Chen C, Zhang J, Su C. Coordination Assemblies of Metallacyclic, Prismatic and Tubular Molecular Architectures Based on the Non‐rigid Ligands. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700187] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chun‐Long Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275, China, Fax: +86‐20‐8411‐5178
| | - Jian‐Yong Zhang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275, China, Fax: +86‐20‐8411‐5178
| | - Cheng‐Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275, China, Fax: +86‐20‐8411‐5178
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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Xie LX, Wei ML, Duan CY, Sun QZ, Meng QJ. Structures, fluorescent properties of the Ag(I) compounds based on molecular clips with biphenyl core. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.12.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Li XP, Zhang JY, Pan M, Zheng SR, Liu Y, Su CY. Zero to Three Dimensional Increase of Silver(I) Coordination Assemblies Controlled by Deprotonation of 1,3,5-Tri(2-benzimidazolyl)benzene and Aggregation of Multinuclear Building Units. Inorg Chem 2007; 46:4617-25. [PMID: 17465542 DOI: 10.1021/ic070309k] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Four Ag(I) complexes of a triangular multidentate ligand 1,3,5-tri(2-benzimidazolyl)benzene (H3TBimB), namely, [Ag2(H3TBimB)2](CF3SO3)2 (1), [Ag4(HTBimB)2]n (2), [Ag9(HTBimB)4(TAZ)]n (HTAZ=1,2,4-triazole) (3), and [Ag17(TBimB)5(HTBimB)(H2O)5]n.nH2O (4), have been synthesized at different pH values adjusted by addition of NH3.H2O under solvothermal conditions and characterized by X-ray single-crystal diffraction. Complex 1 shows an M2L2 dimeric structure, 2 displays a one-dimensional chain containing M4L2 basic units, 3 is a two-dimensional network built up from an M9L4 subunit, and 4 exhibits a three-dimensional framework generated by an M17L6 motif. Dimensional increase in complexes 1-4 was caused by deprotonation of the H3TBimB ligand, thus offering more coordinating donors and resulting in aggregation of oligomeric Ag(I) building units. In the cases of complexes 3 and 4, TAZ or H2O molecules serve as auxiliary ligands to complete the coordination geometry of the Ag(I) ions wherever necessary. The photoluminescent properties of the ligand H3TBimB and the complexes 1-3 have been investigated.
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Affiliation(s)
- Xiang-Ping Li
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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Kasai K, Fujita M. Guest-Dependent Flexible Coordination Networks with Fluorinated Ligands. Chemistry 2007; 13:3089-105. [PMID: 17201000 DOI: 10.1002/chem.200501067] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Guest-dependent flexible coordination networks are formed from 1,4-bis(4-pyridylmethyl)tetrafluorobenzene (bpf), 4,4'-bis(4-pyridylmethyl)octafluorobiphenyl (bpfb), 2,6-bis(4-pyridylmethyl)hexafluoronaphthalene (2,6-bpfn), and 2,7-bis(4-pyridylmethyl)hexafluoronaphthalene (2,7-bpfn) with Cd(NO3)2 in the presence of various organic compounds. The reaction of bpf affords one-dimensional cyclic chains, two-dimensional rhombus grid sheets, and three-dimensional diamond frameworks with threefold interpenetration. The reaction of bpfb mainly affords two-dimensional rhombus grid sheets with twofold parallel interpenetration. The reaction of 2,6-bpfn affords a one-dimensional ladder and two-dimensional rhombus grid, twisted grid, and herringbone sheets. The reaction of 2,7-bpfn affords two-dimensional rhombus grid sheets and grid sheets with dumbbell-shaped cavities. This diversity of network topologies is induced by interactions between the guest molecules and the flexible ligand frameworks.
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Affiliation(s)
- Kayoko Kasai
- Miyagi University of Education, 149 Aoba, Aramaki, 980-0845 Sendai, Japan.
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Liu B, Xu L, Guo G. Two novel 3-D coordination polymers based on isonicotinic acid: Syntheses, crystal structures and fluorescence. J SOLID STATE CHEM 2006. [DOI: 10.1016/j.jssc.2005.12.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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John RP, Park J, Moon D, Lee K, Lah MS. Encapsulation of a guest molecule in a strained form: an extended 36-membered dodecanuclear manganese metallamacrocycle that accommodates a cyclooctane in the S4 symmetry conformation. Chem Commun (Camb) 2006:3699-701. [PMID: 17047816 DOI: 10.1039/b607675k] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An extended 36-membered dodecanuclear manganese metallamacrocycle with S12 symmetry has been synthesized using the ligand N-cyclohexanoylsalicylhydrazide (H3chxshz) by a self-assembly that accommodates a cyclooctane of conformationally strained S4 symmetry in its hydrophobic cavity.
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Affiliation(s)
- Rohith P John
- Department of Chemistry and Applied Chemistry, Hanyang University, Ansan, Kyunggi-do, 426-791 Korea
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Guo Z, Yuan D, Bi W, Li X, Wang Y, Cao R. A novel antiferromagnetic nickel coordination framework with 1-H-benzimidazole-5-carboxylic acid. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.07.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chen CL, Zhang JA, Li XP, Chen ZN, Kang BS, Su CY. Extended structures sustained by hydrogen bonding and π–π interactions: Synthesis and characterization of Cd(II) complexes with bis(benzimidazolyl) ligands. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2005.09.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Goforth AM, Su CY, Hipp R, Macquart RB, Smith MD, zur Loye HC. Connecting small ligands to generate large tubular metal-organic architectures. J SOLID STATE CHEM 2005. [DOI: 10.1016/j.jssc.2005.05.038] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Huang HP, Li SH, Yu SY, Li YZ, Jiao Q, Pan YJ. Novel pyrazolate-bridged dinuclear Pd(II) diimine complexes that bind inorganic anions. INORG CHEM COMMUN 2005. [DOI: 10.1016/j.inoche.2005.04.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lü XQ, Jiang JJ, Chen CL, Kang BS, Su CY. 3D Coordination Polymers with Nitrilotriacetic and 4,4‘-Bipyridyl Mixed Ligands: Structural Variation Based on Dinuclear or Tetranuclear Subunits Assisted by Na−O and/or O−H···O Interactions. Inorg Chem 2005; 44:4515-21. [PMID: 15962958 DOI: 10.1021/ic050125a] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of Cu(II) with the mixed nitrilotriacetic acid (H3NTA) and 4,4'-bipyridyl (4,4'-bpy) ligands in different metal-to-ligand ratios in the presence of NaOH and NaClO4 afforded two complexes, Na3[Cu2(NTA)2(4,4'-bpy)]ClO4 x 5H2O (1) and [Cu2(NTA) (4,4'-bpy)2]ClO4 x 4H2O (2). The two complexes have been characterized by elemental analysis, IR, XRD, and single-crystal X-ray diffraction. 1 contains a basic doubly negatively charged [Cu2(NTA)2(4,4'-bpy)]2- dinuclear unit which was further assembled via multiple Na-O and O-H...O interactions into a three-dimensional (3D) pillared-layer structure. 2 features a two-dimensional (2D) undulated brick-wall architecture containing a basic doubly positively charged [Cu4(NTA)2(4,4'-bpy)2]2+ tetranuclear unit. The 2D network possesses large cavities hosting guest molecules and was further assembled via O-H...O hydrogen bonds into a 3D structure with several channels running in different directions.
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Affiliation(s)
- Xing-Qiang Lü
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
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Lü XQ, Jiang JJ, zur Loye HC, Kang BS, Su CY. A Noninterpenetrated 1D Molecular Ladder and 2D Butterfly Network: Effect of Positional Isomerism of Semirigid Bis(pyridylmethyl)pyromellitic Diimide Ligands on the Architecture of Their Metal(II) Complexes. Inorg Chem 2005; 44:1810-7. [PMID: 15762707 DOI: 10.1021/ic048634k] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three new complexes [Cd(4-pmpmd)1.5 (NO3)2] x CHCl3 (1), [Cd(3-pmpmd)1.5 (NO3)2] x EtOH (2), and [Zn(3-pmpmd)1.5 (NO3)2] x MeOH (3) (3- or 4-pmpmd = N,N'-bis(3- or 4-pyridylmethyl)pyromellitic diimide) containing T-shaped building blocks have been obtained from reactions between the long semirigid ligands 3- or 4-pmpmd and either cadmium or zinc nitrate. 1 forms noninterpenetrated 1D molecular ladders that are linked via multiple, complementary intermolecular C-H...O hydrogen bonds that effect the 3D alignment. 2 and 3 are isostructural and feature a noninterpenetrated 2D butterfly-shaped network with (6,3) topology. Multiple intermolecular C-H...O hydrogen bonds exist between the 2D layers and generate the 3D framework. The structural differences between 1 and 2 or 3 are attributed to the different conformations adopted by the ligands, which illustrate the influence of positional isomerism on the resultant supramolecular architectures of metal complexes.
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Affiliation(s)
- Xing-Qiang Lü
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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Han L, Wang R, Yuan D, Wu B, Lou B, Hong M. Hierarchical assembly of a novel luminescent silver coordination framework with 4-(4-pyridylthiomethyl)benzoic acid. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.10.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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A semi-rigid bis(imidazolyl) ligand for the construction of nanoscopic supramolecules. From the molecular rectangle to the 1D coordination polymer. TRANSIT METAL CHEM 2004. [DOI: 10.1007/s11243-004-2893-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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He H, Linder DP, Rodgers KR, Chakraborty I, Arif AM. A thiazole-containing tripodal ligand: synthesis, characterization, and interactions with metal ions and matrix metalloproteinases. Inorg Chem 2004; 43:2392-401. [PMID: 15046516 DOI: 10.1021/ic034811q] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new tripodal ligand, tris[2-(((2-thiazolyl)methylidene)amino)ethyl]amine (Tatren), has been synthesized and characterized by NMR, IR, and UV-visible absorbance spectroscopy and elemental analysis. Tatren forms stable complexes with transition metal ions (Zn(2+), 1; Mn(2+), 2; Co(2+), 3) and the alkaline earth metal ions (Ca(2+), 4; Mg(2+), 5). Single-crystal X-ray structures of 1, 2, and 5 revealed six-coordinate chelate complexes with formula [M(Tatren)](ClO(4))(2) in which the metal centers are coordinated by three thiazolyl N atoms and three acyclic imine N atoms. Crystals of 1, 2, and 5 are monoclinic, P2(1)/c space group. Crystals of 4 are triclinic, P space group. The Ca(2+) complex is eight-coordinate with all N atoms of Tatren and one water molecule coordinated to the metal ion. Spectrophotometric titrations show that formation constants for the chelates of metal ions are >>1 in methanol. Free Tatren inhibits the catalytic domain of matrix metalloproteinase-13 (MMP-13, collagenase-3) with K(i) = 3.5 +/- 0.6 microM. Molecular mechanics-based docking calculations suggest that one leg of Tatren coordinates to the catalytic Zn(2+) in MMPs-2, -9, and -13 with significant hydrogen bonding to backbone amide groups. High-level DFT calculations suggest that, in the absence of nonbonded interactions between Tatren and the enzyme, the most stable first coordination sphere of the catalytic Zn(2+) is achieved with three imidazolyl groups from His residues and two imine N atoms from one leg of Tatren. While complexes (1-3) do not inhibit MMP-13 to a significant extent, 4 does (K(i) = 30 +/- 10 microM). Hence, this study shows that tripodal chelating ligands of this class and their Ca(2+) complexes have potential as active-site inhibitors for MMPs.
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Affiliation(s)
- Hongshan He
- Department of Chemistry, North Dakota State University, Fargo, North Dakota 58105-5516, USA
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Su CY, Goforth AM, Smith MD, Pellechia PJ, zur Loye HC. Exceptionally Stable, Hollow Tubular Metal−Organic Architectures: Synthesis, Characterization, and Solid-State Transformation Study. J Am Chem Soc 2004; 126:3576-86. [PMID: 15025487 DOI: 10.1021/ja039022m] [Citation(s) in RCA: 372] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An effective solvothermal procedure has been developed to synthesize the new three-dimensional metal-organic framework, [ZnF(AmTAZ)].solvents, using either 3-amino-1,2,4-triazole (AmTAZ) or 3-amino-1,2,4-triazole-5-carboxylic acid (AmTAZAc) and a choice of several Zn(II) salts as starting materials. The three-dimensional structure displays open-ended, hollow nanotubular channels that are formed by hexanuclear metallamacrocyclic Zn(6)F(6)(AmTAZ)(6) rings. The framework integrity is maintained to 350 degrees C, at which point most of the guest solvent molecules have been removed, as evidenced by single-crystal X-ray analyses, (1)H solid-state NMR, and TGA measurements. At higher temperatures, the framework is converted either to zinc oxide (ZnO) when heated in air or to zinc cyanamide (ZnCN(2)) when heated in an inert atmosphere. In both cases, the as-grown, rodlike crystal shape is maintained during the solid-state transformation, suggesting a possible route for preparing one-dimensional crystalline nanomaterials.
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Affiliation(s)
- Cheng-Yong Su
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
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Fondo M, García-Deibe A, Sanmartín J, Bermejo M, Lezama L, Rojo T. A Binuclear Copper(II) Acetate Complex Showing a 3D Supramolecular Network with Hydrophilic Pockets: Its Unusual Magnetic Behaviour. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300478] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tao RJ, Zang SQ, Hu NH, Wang QL, Cheng YX, Niu JY, Liao DZ. From dissymmetrical mononuclear entities to centrosymmetrical heterotrinuclear complex with 2D supramolecular structure: synthesis, characterization, crystal structure, and magnetic properties. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(03)00293-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Su CY, Cai YP, Chen CL, Smith MD, Kaim W, zur Loye HC. Ligand-directed molecular architectures: self-assembly of two-dimensional rectangular metallacycles and three-dimensional trigonal or tetragonal prisms. J Am Chem Soc 2003; 125:8595-613. [PMID: 12848568 DOI: 10.1021/ja034267k] [Citation(s) in RCA: 413] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three angular ditopic ligands (1,3-bis(benzimidazol-1-ylmethyl)-4,6-dimethylbenzene L(1), 1,3-bis(benzimidazol-1-ylmethyl)-2,4,6-trimethylbenzene L(2), and 1,4-bis(benzimidazol-1-ylmethyl)-2,3,5,6-tetramethylbenzene L(3)) and one tripodal ligand 1,3,5-tris(benzimidazol-1-ylmethyl)-2,4,6-trimethylbenzene L(4) have been prepared. Reaction of these shape-specific designed ligands with different metal salts affords a series of discrete molecular architectures: [Ag(2)L(1)(2)](BF(4))(2) 1, [Ag(2)L(2)(2)](CF(3)SO(3))(2) 2, [CF(3)SO(3)(-) subset Ag(2)L(3)(2)]CF(3)SO(3) 3, [CF(3)SO(3)(-) subset Ag(2)L(3)(3)]CF(3)SO(3) 4, [ClO(4)(-) subset Cu(2)L(2)(4)](ClO(4))(3) 5, [4H(2)O subset Ni(2)L(2)(4)Cl(4)].6H(2)O 6, [BF(4)(-) subset Ag(3)L(4)(2)](BF(4))(2) 7, [ClO(4)(-) subset Ag(3)L(4)(2)](ClO(4))(2) 8, and [CuI(3)(2-) subset Cu(3)L(4)(2)](2)[Cu(2)I(4)] 9. The compounds were characterized by elemental analysis, ESI-MS, IR, and NMR spectroscopy, and X-ray crystallography. 1 is a dinuclear metallacycle with 2-fold rotational symmetry in which two syn-conformational L(1) ligands are connected by two linearly coordinated Ag(+) ions. 2 and 3 are structurally related, consisting of rectangular structures assembled from two linearly coordinated Ag(+) ions and two L(2) or L(3) ligands. The structure of 4 is a trigonal prismatic box consisting of two Ag(+) ions in trigonal planar coordination linked by three L(3) ligands, while the structures of 5 and 6 are tetragonal prismatic cages constructed by two square planar Cu(2+) or Ni(2+) ions linked by four L(2) ligands. The topologies of 7-9 are similar to that of 4; however, these three structures are assembled from three linearly coordinated Ag(+) or Cu(+) ions and two tripodal ligands, representing an alternative strategy to assembling a trigonal prism. (1)H NMR and ESI-MS were utilized to elucidate the solution structures of these macrocycles.
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Affiliation(s)
- Cheng-Yong Su
- School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, People's Republic of China.
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Chen CL, Su CY, Cai YP, Zhang HX, Xu AW, Kang BS, Zur Loye HC. Multidimensional frameworks assembled from silver(I) coordination polymers containing flexible bis(thioquinolyl) ligands: role of the intra- and intermolecular aromatic stacking interactions. Inorg Chem 2003; 42:3738-50. [PMID: 12793810 DOI: 10.1021/ic0341035] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The two flexible multidentate ligands 1,3-bis(8-thioquinolyl)propane (C3TQ) and 1,4-bis(8-thioquinolyl)butane (C4TQ) were reacted with AgX (X = CF(3)SO(3)(-) or ClO(4)(-)) to give four new complexes: ([Ag(C3TQ)](ClO(4)))(n)() 1, ([Ag(C3TQ)](CF(3)SO(3)))(n)() 2, ([Ag(2)(C4TQ)(CF(3)SO(3))(CH(3)CN)](CF(3)SO(3)))(n)() 3, and ([Ag(C4TQ)](ClO(4)))(n)() 4. All complexes have been characterized by elemental analysis, IR, and (1)H NMR spectroscopy. Single-crystal X-ray analysis showed that chain structures form for all complexes in which the quinoline rings interact via various intra- (1) or intermolecular (2, 3, and 4) pi-pi aromatic stacking interactions, which in the latter cases results in multidimensional structures. Additional weak interactions, such as Ag.O and Ag.S contacts and C-H.O hydrogen bonding, are also present and help form stable, crystalline materials. It was found that the (CH(2))(n) spacers (n = 3 or 4) affect the orientation of the two terminal quinolyl rings, thereby significantly influencing the specific framework structure that forms. If the same ligand is used, on the other hand, then the different counteranions have the greatest effect on the final structure.
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Affiliation(s)
- Chun-Long Chen
- School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, China
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Valkama S, Ruotsalainen T, Kosonen H, Ruokolainen J, Torkkeli M, Serimaa R, ten Brinke G, Ikkala O. Amphiphiles Coordinated to Block Copolymers as a Template for Mesoporous Materials. Macromolecules 2003. [DOI: 10.1021/ma020538k] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sami Valkama
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Teemu Ruotsalainen
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Harri Kosonen
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Janne Ruokolainen
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Mika Torkkeli
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Ritva Serimaa
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Gerrit ten Brinke
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
| | - Olli Ikkala
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland; VTT Microelectronics, Technical Research Centre of Finland, P.O. Box 1208, FIN-02044 VTT, Finland; Department of Materials, University of California Santa Barbara, Santa Barbara, California 93106; Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland; and Laboratory of Polymer Chemistry, Materials Science Center,
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Yang XP, Kang BS, Wong WK, Su CY, Liu HQ. Syntheses, crystal structures, and luminescent properties of lanthanide complexes with tripodal ligands bearing benzimidazole and pyridine groups. Inorg Chem 2003; 42:169-79. [PMID: 12513092 DOI: 10.1021/ic025799p] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two tripodal ligands, bis(2-benzimidazolylmethyl)(2-pyridylmethyl)amine (L(1)) and bis(2-pyridylmethyl)(2-benzimidazolylmethyl)amine (L(2)), were synthesized. With the third chromophoric ligand antipyrine (Antipy), three series of lanthanide(III) complexes were prepared: [LnL(1)(Antipy)(3)](ClO(4))(3) (series A), [LnL(1)(Antipy)Cl(H(2)O)(2)]Cl(2)(H(2)O)(2) (series B), and [LnL(2)(NO(3))(3)] (series C). The nitrate salt of the free ligand H(2)L(1).(NO(3))(2) and six complexes were structurally characterized: Pr(3+)A, Y(3+)A, Eu(3+)B, Eu(3+)C, Gd(3+)C and Tb(3+)C, in which the two A and three C complexes are isomorphous. Crystallographic studies showed that tripodal ligands L(1) and L(2) exhibited a tripodal coordination mode and formed 1:1 complexes with all lanthanide metal ions. The coordination numbers of the lanthanide metal ions for the A, B, and C complexes were 7, 8, and 10, respectively. Conductivity studies on the B and C complexes in methanol showed that, in the former, the coordinated Cl(-) dissociated to give 3:1 electrolytes and, in the latter, two coordinated NO(3)(-) ions dissociated to give 2:1 electrolytes. Detailed photophysical studies have been performed on the free ligands and their Gd(III), Eu(III), and Tb(III) complexes in several solvents. The results show a wide range in the emission properties of the complexes, which could be rationalized in terms of the coordination situation, the (3)LC level of the complexes, and the subtle variations in the steric properties of the ligands. In particular the Eu(3+)A and Tb(3+)A complexes, in which the central metal ions were wholly coordinated by chromophoric ligands of one L(1) and three antipyrine molecules, had relatively higher emission quantum yields than their corresponding B and C complexes.
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Affiliation(s)
- Xiao-Ping Yang
- School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, People's Republic of China
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