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Topochemical Synthesis and Electronic Structure of High-Crystallinity Infinite-Layer Nickelates on an Orthorhombic Substrate.
Nano Lett
January 2025
Department of Physics, Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong 999077, China.
Superconductivity in infinite-layer nickelates has stirred much research interest, to which questions regarding the nature of superconductivity remain elusive. A critical leap forward to address these intricate questions is through the growth of high-crystallinity infinite-layer nickelates, including the "parent" phase. Here, we report the synthesis of a high-quality thin-film nickelate, NdNiO.
View Article and Find Full Text PDFPhoto-Assisted Bottom-Up Synthesis of Orange Phosphorus.
Angew Chem Int Ed Engl
December 2024
Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan.
A tubular strand of phosphorus composed of vectorially aligned pentagons has been theoretically predicted as a new allotrope of phosphorus with a polar structure, expecting potential applications. However, it has not been successfully synthesized yet due to the difficulty of creating isolated strands to avoid interchain bonding. Here, such an allotrope named "orange phosphorus" was successfully produced using a photo-assisted synthesis from an amorphous film of solution-processable NaP precursors.
View Article and Find Full Text PDFOxidation Triggered Supramolecular Chirality.
Nano Lett
December 2024
School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China.
Topochemical reactions normally occurring in the solid and crystalline state exhibit solvent-free and catalyst-free properties, with high atom economy properties, which have been widely applied in materials science and polymer synthesis. Herein, we explore the potential of topochemical reactions for controlling the emergence of supramolecular chirality and the precise fabrication of chiroptical materials. Boronic acid pinacol esters (BPin) were conjugated to naphthalimides containing an inherent chiral cholesteryl group linked by alkyl or benzene spacers.
View Article and Find Full Text PDFTopochemical synthesis of anion-intercalated transition metal dichalcogenide superconductor SWS.
Chem Commun (Camb)
December 2024
School of Science, China University of Geosciences, Beijing (CUGB), Beijing, 100083, China.
We have successfully synthesized bulk single crystals of SWS using a topochemical method, confirming the successful intercalation of sulfur into the interlayer space of M-WS, which induces hole doping. The material exhibits superconductivity with a transition temperature of 6.5 K, making it the first anion-intercalated/hole-doped TMD material.
View Article and Find Full Text PDFPromoted Hydride Substitution in BaTiO Cubes.
Inorg Chem
December 2024
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, 4-12-1, Nakanarusawa, Kyoto, Nishikyo-ku 615-8510, Japan.
We report the synthesis of perovskite oxyhydride BaTiOH cubes (100-300 nm) using the topochemical hydride reaction of the hydrothermally synthesized oxide. X-ray and neutron diffraction studies revealed that the anion (hydride/oxide) exchange is greatly improved, leading to a maximum hydride content of 0.7, which is higher than previously reported, while no reaction is seen for those with oleic acid on their surface.
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