Yue Bing

Biotemplated Syntheses of Macroporous Materials for Bone Tissue Engineering Scaffolds and Experiments in Vitro and Vivo

The macroporous materials were prepared from the transformation of cuttlebone as biotemplates under hydrothermal reactions and characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric/differential thermal analyses (TG-DTA), and scanning electron microscopy (SEM). Cell experimental results showed that the prepared materials as bone tissue engineering scaffolds or fillers had fine biocompatibility suitable for adhesion and proliferation of the hMSCs (human marrow mesenchymal stem cells). Histological analyses were carried out by implanting the scaffolds into a rabbit femur, where the bioresorption, degradation, and biological activity of the scaffolds were observed in the animal body. The prepared scaffolds kept the original three-dimensional frameworks with the ordered porous structures, which made for blood circulation, nutrition supply, and the cells implantation. The biotemplated syntheses could provide a new effective approach to prepare the bone tissue engineering scaffold materials.

catena-Poly[cadmium-bis-(μ-N,N-dimethyl-dithio-carbamato-κS,S':S)].

In the title compound, [Cd(C3H6NS2)2]n, the CdII atom, lying on a twofold rotation axis, is coordinated by six S atoms from four different N,N-dimethyldithiocarbamate ligands in a distorted octahedral geometry. The bridging of S atoms of the ligands leads to the formation of a one-dimensional structure along [001].

Self-assembly of metal–organic frameworks: From packing helical channels to 2-fold interpenetration helical layers

Two new 2D metal–organic frameworks were assembled in different conditions. Single X-ray diffraction analyses reveal that complex 1 possesses packing of large helical channels filled by guest water molecules; and 2 has a 2-fold interpenetration layer-like structure with relatively petite helical channels, with guest water molecules residing in the void spaces between neighboring helical layers. The diverse structures may result from dissimilar crystal growth mechanisms with distinct thermal stable energies confirmed by theoretical calculation. Photoluminescent spectra, thermogravimetric analyses and power X-ray diffraction analyses were performed.

Bis(μ-2-phenyl-quinoline-4-carboxyl-ato)bis-[aqua-(1,10-phenanthroline)(2-phenyl-quinoline-4-carboxyl-ato)manganese(II)] dihydrate.

In the centrosymmetric dinuclear title complex, [Mn2(C16H10NO2)4(C12H8N2)2(H2O)2]·2H2O, the MnII cation is in a distorted octahedral coordination geometry defined by two N atoms from a 1,10-phenanthroline ligand, one water O atom and three O atoms from three 2-phenylquinoline-4-carboxylate anions. A pair of 2-phenylquinoline-4-carboxylate anions bridge two Mn cations, forming the dinuclear molecule. An intramoleculr O—H⋯O hydrogen bond occurs. Intermolecular O—H⋯O and O—H⋯N hydrogen bonds are present in the crystal structure.

Synthesis and Characterization of Zinc(II) Complex with (1R, 2R)-(-)-Diaminocyclohexane-N,N’-bis(3-tert-butyl-5 -(4’-methylbenzoate)-salicylidene)

The title compound 1, with the formula of [Zn(C 44 H 48 N 2 O 6 )·DMF] 2 , is a Zn-salen complex. The asymmetric unit of the complex contains two subtle different molecules of the complex. The Zn center adopts a distorted square pyramidal geometry with the equatorial plane occupied by the central N 2 O 2 donors of the salen ligand and the apical position by one oxygen atom of DMF molecule. The zinc salen complex extends its structure via intermolecular hydrogen bonding interactions and CH···π interactions. The title compound is potentially a good building block for the construction of highly porous metal-organic frameworks (MOFs) and homogeneous catalyst.

Bis[4-amino-N-(pyrimidin-2-yl)benzene-sulfonamidato](1,10-phenanthroline)nickel(II).

In the mononuclear title compound, [Ni(C10H9N4O2S)2(C12H8N2)], the NiII atom has a distorted octahedral coordination geometry comprising four N atoms from two 4-amino-N-(pyrimidin-2-yl)benzenesulfonamidate ligands and two N atoms from a 1,10-phenanthroline ligand. In the crystal, molecules are connected into a three-dimensional supramolecular network via N—H⋯O hydrogen bonds and weak C—H⋯O and C—H⋯N contacts.

Syntheses, structures, and fluorescence of two cadmium compounds [Cd2(pqc)4(phen)2(H2O)2] · 2H2O and {[Cd(pqc)2(bpy)(H2O)2] · 2H2O} n

Assembly of 2-phenylquinoline-4-carboxylic acid and Cd(CH3COO)2 · 2H2O or CdSO4 · 8H2O gave two new complexes [Cd2(pqc)4(phen)2(H2O)2] · 2H2O (1) and {[Cd(pqc)2(bpy)(H2O)2] · 2H2O} n (2) (pqcH = 2-phenylquinoline-4-carboxylic acid, phen = 1,10-phenanthroline, bpy = 4,4′-bpy). Complexes 1 and 2 have been characterized by single-crystal X-ray diffraction, IR, powder X-ray diffraction, thermogravimetric analyses, and fluorescence spectra. Structural analyses reveal that 1 is binuclear; the binuclear Cd(II) units are linked by intermolecular hydrogen bonds and π–π interactions to generate a supramolecular structure. Complex 2 possesses a 1-D infinite chain with chains further assembled into a 3-D supramolecular network by π–π, H-bonding, and C–H ··· π interactions.

Synthesis, Photoluminescent, and Magnetic Properties of Two Lanthanide Sulfosalicylate Complexes

Self-assembly reactions of 5-sulfosalicylic acid (ssa) and lanthanide oxides under hydrothermal condition gave rise to two hybrid polymeric complexes, namely [Nd(ssa)(H2O)]n (1) and {[Tb(ssa)(H2O)2]·H2O}n (2). X-ray diffraction analyses reveal that complex 1 holds a three-dimensional framework and complex 2 possesses a two-dimensional network with the asymmetric unit comprising one Tb(III) ion, one sulfosalicylate ligand, and two coordinated and one free water molecule. The Fourier transform infrared spectra, thermogravimetric analyses, magnetic susceptibility, and fluorescent measurements for the complexes have been performed. Supplemental materials are available for this article. Go to the publishers online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.

Crystal Structures and Luminescent Properties of Two Zinc(II) Complexes with 2-Phenylquinoline-4-carboxylates

Assembly of 2-phenylquinoline-4-carboxylic acid and Zn(OAC)2·2H2O gives rise to two complexes [Zn2(C16H10NO2)4 (phen)2(H2O)2]·2H2O (I) and [Zn2(C16H10NO2)4(bpy)2]n (II) (phen = 1,10-phenanthroline, bpy = 4,4′-bipyridine). Complexes I and II have been characterized by x-ray single-crystal diffraction, infrared (IR), powder x-ray diffraction (PXRD), thermogravimetric analysis (TGA), and fluorescence spectra. Structural analysis reveals that I is binuclear in structure; two Zn(II) centers are bridged by two carboxylate groups and the terminal water molecule occupies a axial position of the octahedral geometry, which further extends the binuclear unit into a supramolecular framework via intermolecular hydrogen bonding and π···π interactions. Complex II possesses a one-dimensional infinite zigzag chain architecture by bridging of the 4,4′-bipyridne.

Bis(μ-2-phenyl­quinoline-4-carboxyl­ato)-κ3O,O′:O;κ3O:O,O′-bis­[(2,2′-bipyridine-κ2N,N′)(2-phenyl­quinoline-4-carboxyl­ato-κ2O,O′)cadmium(II)]

The neutral binuclear title complex, [Cd2(C16H10NO2)4(C10H8N2)2], is centrosymmetric, with the inversion center generating the central (μ-O)2Cd2 bridge. The CdII ion is in a strongly distorted CdN2O5 pentagonal-bipyramidal geometry, defined by two N atoms from one 2,2′-bipyridine ligand and five O atoms from three 2-phenylquinoline-4-carboxylate ligands, one monodentate, two bidentate. Weak intermolecular π–π interactions [centroid–centroid distance = 3.712 (3) Å] help to establish the packing of the structure.