Yonsei University · 医学
Professor Hye Jin Choi's research lab specializes in the design and synthesis of metal-organic frameworks (MOFs) and supramolecular coordination networks with tailored porosity, structural dynamics, and functional properties. The lab focuses on creating stable, open-framework materials using transition metal ions and multidentate organic ligands, emphasizing structural diversity, guest inclusion behavior, and applications in gas storage, separation, and sensing. Key research directions include the development of chemically robust MOFs with exceptional thermal and solvent stability, as well as the exploration of dynamic structural responses to guest molecules and external stimuli.
Figures are computed from collected data and may differ slightly.
Reaction of Co(CF3SO3)2 with the new molecule 1,4-benzenedi(4'-pyrazolyl) (H2BDP) in N,N'-diethylformamide (DEF) at 130 degrees C generates the metal-organic framework Co(BDP).2DEF.H2O (1). X-ray analysis reveals the structure of 1 to contain chains of tetrahedrally ligated Co2+ ions linked through BDP2- ligands to generate a three-dimensional framework with 10 x 10 A2 channels. Thermogravimetric data shows the framework to have a high thermal stability, and complete desolvation occurs upon heat
A metal-organic pillared bilayer open framework having 3D channels, [Ni(2)(C(26)H(52)N(10))](3)[BTC](4).6C(5)H(5)N.36H(2)O (BOF-1, 1), has been assembled from bismacrocyclic nickel(II) complex [Ni(2)(C(26)H(52)N(10))(Cl)(4)].H(2)O and sodium 1,3,5-benzenetricarboxylate (Na(3)BTC). The channels are occupied by pyridine and water guest molecules. When the single crystal of 1 was dried in air and then heated at 75 degrees C for 1.5 h, respectively, [Ni(2)(C(26)H(52)N(10))](3)[BTC](4).30H(2)O (1') a
Novel multidimensional supramolecular networks with brick wall and honeycomb structures, [Ni(C12H30N6O2)]3[C6H3(COO)3]2·18H2O (1) and [Ni(C12H30N6O2)]3[C6H3(COO)3]2·14H2O·2C5H5N (2), respectively, have been constructed by the self-assembly of S = 0 Ni(II) macrocyclic complex containing hydroxyl pendent chains and 1,3,5-benzenetricarboxylate (BTC3-). The host structures assembled are greatly affected even by the partial change of the guests. X-ray crystal structures indicate that each Ni(II) macr
Reactions between K(3)[M(CN)(6)] and [Mn(5-Brsalen)(H(2)O)(2)](+) (5-Brsalen = N,N'-ethylenebis(5-bromosalicylidene)aminato dianion) in a mixture of methanol and water afford the compounds K[(5-Brsalen)(2)(H(2)O)(2)Mn(2)M(CN)(6)].2H(2)O, with M = Cr (1) or Fe (2). The two compounds are isostructural, each containing a molecular cluster with a linear Mn(III)-NC-M(III)-CN-Mn(III) core and tetragonally elongated coordination about the Mn(III) centers. Magnetic data indicate the presence of weak exc
A three-dimensional network with one-dimensional channels (see picture) has been self-assembled from the nickel(II) complex of cyclam and 1,3,5-benzenetricarboxylate in water through hydrogen-bond formation. The channels have an appropriate diameter (10.3 Å) to include D-glucose with a formation constant of K<sub>f</sub> =(1.38±0.01)×10<sup>4</sup> M<sup>-1</sup> . Under similar conditions maltose is not included.
Pyrazolate-bridged metal–organic frameworks incorporating tetrahedral Zn2+ ions are shown to exhibit a high chemical stability in boiling water, organic solvents, and acidic media, and are assessed for their hydrogen storage properties.
A 3-D network is self-assembled from a square-planar Ni(II) macrocyclic complex containing hydroxyl pendent chains and a terephthalato (tp2-) ligand. In the crystal, two series of linear chains extending different directions are alternately packed and interconnected by the hydrogen-bonding interactions between the pendent hydroxyl groups and the secondary amines of the macrocycles. The solid is able to bind water reversibly.
This study proposes predictive molecular features of chemotherapy and immunotherapy responses in advanced BTCs using clinical sequencing platforms. Our result provides an intuitive framework to guide the treatment of advanced BTCs benefiting from therapeutic agents based on the tumors' molecular features.
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