W
Wonyoung Choe
Researcher at Ulsan National Institute of Science and Technology
Publications - 68
Citations - 3484
Wonyoung Choe is an academic researcher from Ulsan National Institute of Science and Technology. The author has contributed to research in topics: Metal-organic framework & Porphyrin. The author has an hindex of 29, co-authored 66 publications receiving 2903 citations. Previous affiliations of Wonyoung Choe include University of Michigan & University of Nebraska–Lincoln.
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Journal ArticleDOI
Making and breaking covalent bonds across the magnetic transition in the giant magnetocaloric material Gd5(Si2Ge2)
Wonyoung Choe,Vitalij K. Pecharsky,Alexandra O. Pecharsky,Karl A. Gschneidner,Victor G. Young,Gordon J. Miller +5 more
TL;DR: A temperature-dependent, single crystal x-ray diffraction study of the giant magnetocaloric material, Gd5(Si2Ge2), across its Curie temperature reveals that the simultaneous orthorhombic to monoclinic transition occurs by a shear mechanism in which the (Si, Ge)-(Si,Ge) dimers that are richer in Ge increase their distances by 0.859(3) A and lead to twinning.
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Stepwise synthesis of metal-organic frameworks: replacement of structural organic linkers.
TL;DR: A previously unattainable structure was obtained by a two-step synthetic method utilizing the bridging-linker replacement transformation method, inducing an overall 2D to 3D transformation.
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Pillared porphyrin homologous series: intergrowth in metal-organic frameworks.
TL;DR: Three new porphyrin-based, pillared paddle-wheel homologous series of frameworks PPF-3, -4, and -5 are reported, where 2D layers are pillared by bipyridine with three different packing arrangements.
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Highly tunable metal–organic frameworks with open metal centers
TL;DR: In this paper, the synthesis and characterization of porphyrin containing metal-organic frameworks that show high metal tunability without altering the framework topology is described, and the same authors also report the characterization and synthesis of metal-containing polymorphin containing polycyclic porphrin.
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Anisotropy and large magnetoresistance in the narrow-gap semiconductor FeSb2
Cedomir Petrovic,J. W. Kim,Sergey L. Bud'ko,Alan I. Goldman,Paul C. Canfield,Wonyoung Choe,Gordon J. Miller +6 more
TL;DR: In this paper, the anisotropic properties of large single crystals grown from Sb flux have been studied and it has been shown that the magnetic susceptibility of large Sb crystals exhibits diamagnetic to paramagnetic crossover around 100 K.