Supersaturation-Controlled Growth Orientation and Grain Boundary Transition in REBa2Cu3O7−δ (RE = Sm, Sm1−xYx) Liquid-Phase Epitaxial Films

Tang, Chen; Chen, Yuan Y.; Li, Wei; Sun, Li; Yao, Xin; Jirsa, M.

doi:10.1021/cg100228p

Crystal Growth & Design

2010

DOI: 10.1021/cg100228p

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Supersaturation-Controlled Growth Orientation and Grain Boundary Transition in REBa₂Cu₃O_7−δ (RE = Sm, Sm_1−xY_x) Liquid-Phase Epitaxial Films

Chen Tang¹,

Yuan Y. Chen²,

Wei Li³

et al.

Abstract: > t c , LPE would produce a c-axis oriented film; if t a > t > t c , the LPE would result in an a-axis oriented film." In that sentence, t a > t > t c should be t c > t > t a .

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Influential Role of Geometrical Disparity of Linker and Metal Ionic Radii in Elucidating the Structural Diversity of Coordination Polymers Based on Angular Dicarboxylate and Bis-pyridyl Ligands

Manna

Tripuramallu

Das

2013

Crystal Growth & Design

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As a continuation of our recent investigations on coordination polymer/ metal−organic framework containing compounds, herein, four new coordination polymers, namely, {Co 2 (ADA) 2 (px2ampy)} n (1), {Cd(ADA)(px2ampy) 0.5 } n (2), {Co 2 (IPTA) 2 (px2ampy)} n (3), {Mn(IPTA)(px3ampy)} n (4) have been synthesized, based on the flexible dicarboxylate ligand H 2 ADA and rigid dicarboxylate ligand H 2 IPTA along with long flexible bis-pyridyl linkers as coligand (where H 2 ADA = 1,3adamantanediacetic acid; H 2 IPTA = isopthalic acid; px2ampy = 1,4-bis(2pyridylaminomethyl)benzene; px3ampy = 1,4-bis(3-pyridylaminomethyl)benzene). Compounds 1−4 have been characterized by routine elemental analysis, IR spectroscopy, and thermogravimetric (TG) analysis and unambiguously by single crystal X-ray diffraction analysis. The solid-state luminescent property of compound 2 has been additionally characterized. Compound 1 is a two-dimensional (2D) framework, constructed by the connectivity of Co 2 paddle-wheels as secondary building units (SBUs) and the organic linkers. The 2D sheet of compound 2 consists of Cd-dimers as SBUs and extends to a supramolecular three-dimensional (3D) framework through H-bonding interactions among the sheets. Compound 3 is a 3D coordination polymer, in which an unusual SBU is formed by two Co II centers: one in tetrahedral and the other one in octahedral coordination geometries. In the crystal structure of compound 4, the connectivity of the Mn 2 -dimers with the macrocyclic rings, formed from px3ampy coligands, results in the formation of 2D layer structures. The title compounds 1−4 illustrate an important structural relationship, which can be rationalized by the geometrical diversity of two different dicarboxylate ligands and the nature of different metal ions, employed in this study. The role of the metal ionic radii in assessing the formation of final architectures, thereby, influencing the dimensionality of the compounds has been discussed. The long flexible pyridyl spacers, present in all these compounds as an integral part, modulate themselves in different conformations depending on the requirement of the coordination environment.

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Influential Role of Geometrical Disparity of Linker and Metal Ionic Radii in Elucidating the Structural Diversity of Coordination Polymers Based on Angular Dicarboxylate and Bis-pyridyl Ligands

Manna

Tripuramallu

Das

2013

Crystal Growth & Design

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Structural diversity of coordination polymers assembled from adamantane dicarboxylates and conformational bis-triazole ligand

et al. 2011

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Four 3D “brick-wall”-like metal–organic frameworks with a flexible ligand of (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid: crystal structures, luminescent and magnetic properties

et al. 2013

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To investigate the conformation of cyclopentanetetracarboxylic acid, four new "brick-wall"-like metal-organic frameworks have been synthesized from hydrothermal reactions with different metal salts, (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid (H(4)cptc) and auxiliary N-donor ligands, namely, Cu(2)(S,S,R,R-cptc)(bpe)(H(2)O)(2)·2H(2)O (1), Co(2)(S,S,R,R-cptc)(bpe)(0.5)(H(2)O)(2)·2H(2)O (2), Cd(4)(S,S,R,R-cptc)(2)(bpa)(2)(H(2)O)(5)·2H(2)O (3) and Co(2)(S,S,R,R-cptc)(bpy)(0.5)(H(2)O)(2)·2(H(2)O) (4) (bpe = 4-(2-(pyridine-4-yl)vinyl)pyridine, bpa = 4-(2-(pyridine-4-yl)ethyl)pyridine, bpy = 4-(pyridine-4-yl)pyridine). The complexes were further characterized by single-crystal X-ray diffraction, power X-ray diffraction, FT-IR spectra, fluorescent measurements and variable-temperature magnetic susceptibility measurements. The results of the structural investigations show that 1 is a charming (3,3,4)-trinodal architecture, 3 is an interesting trinodal (3,4,5)-connected architecture, and 2 and 4 are isostructural, which are both (4,5)-connected networks. In addition, the magnetic measurements indicate that 2 and 4 show weak antiferromagnetic interactions, and the fluorescent measurement shows the strong solid-state fluorescent emission at room temperature for 3.

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Supersaturation-Controlled Growth Orientation and Grain Boundary Transition in REBa₂Cu₃O_7−δ (RE = Sm, Sm_1−xY_x) Liquid-Phase Epitaxial Films

Abstract: > t c , LPE would produce a c-axis oriented film; if t a > t > t c , the LPE would result in an a-axis oriented film." In that sentence, t a > t > t c should be t c > t > t a .

Cited by 4 publications

References 0 publications

Influential Role of Geometrical Disparity of Linker and Metal Ionic Radii in Elucidating the Structural Diversity of Coordination Polymers Based on Angular Dicarboxylate and Bis-pyridyl Ligands

Influential Role of Geometrical Disparity of Linker and Metal Ionic Radii in Elucidating the Structural Diversity of Coordination Polymers Based on Angular Dicarboxylate and Bis-pyridyl Ligands

Structural diversity of coordination polymers assembled from adamantane dicarboxylates and conformational bis-triazole ligand

Four 3D “brick-wall”-like metal–organic frameworks with a flexible ligand of (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid: crystal structures, luminescent and magnetic properties

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