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The cycloaddition reaction of carbon dioxide (CO) is a highly economic solution to becoming carbon-neutral. Herein, we have designed and synthesized a robust zinc(II)-organic framework (Zn-Ade-TCPE) by a function-directed strategy. Zn-Ade-TCPE possesses uncommon hexagonal cages with Lewis acid-base bifunctional sites and displays a high adsorption capacity for CO. At room temperature and atmospheric pressure, Zn-Ade-TCPE exhibits outstanding activity, selectivity, and recyclability in the cycloaddition reaction of epoxides with CO because of the synergistic effect of multiple active sites and confined cavities.
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http://dx.doi.org/10.1021/acs.inorgchem.2c03144 | DOI Listing |
ACS Omega
August 2025
Department of Biological Science and Technology, College of Engineering Bioscience, National Yang Ming Chiao Tung University, Hsinchu 30068, Taiwan.
Fatty acid photodecarboxylase (FAP) was recently discovered in microalgae and is a photoenzyme that harvests sunlight to convert long-chain fatty acids to hydrocarbons. The hydrophobicity of the substrates and photoproducts strongly affects the stability of FAP studies. Here, we incorporated zeolitic imidazole frameworks (ZIFs) as structural protecting cages and characterized FAP (FAP) in ZIFs.
View Article and Find Full Text PDFSci Adv
May 2025
HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, IL 60439, USA.
Clathrates are guest/host framework compounds composed of polyhedral cages, yet despite their prevalence among tetrahedral network formers, clathrates with a carbon host lattice remain unrealized synthetic targets. Here, we report a type-I carbon-based framework-a ubiquitous clathrate structure type found throughout compounds containing tetrahedral building blocks. Following a boron-stabilization scheme based on first-principles predictions in the Ca-B-C system at high pressure, type-I CaBC ( ≈ 9) was synthesized in the archetypal [Formula: see text] lattice with stability derived from substitutionally disordered boron atoms on hexagonal ring framework positions.
View Article and Find Full Text PDFEur Spine J
August 2025
American Neurospine Institute, Frisco, TX, USA.
Purpose: To evaluate intervertebral cage migration and bony ingrowth in 3D printed additive manufacturing titanium cages with hexagonal geometry in the cage walls and traditional PEEK anterior cervical cages using an in-vivo ovine model.
Materials And Methods: A comparative animal study was performed. 3D-printed titanium and PEEK interbody cages were implanted in eight ovine cervical spines without fixation.
Proc Natl Acad Sci U S A
May 2025
Department of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China.
Regulating multistimulus responses in artificial systems remains a challenge in smart material development. We present a versatile chemical switching system that precisely controls the self-assembly of metal-organic cages via temperature and solvent changes. The key component, cyclo[2](1,3-(4,6-dimethyl)benzene) (4-pyridine)[6](1,3-(4,6-dimethyl)benzene) (), was generated as three atropisomers (, , and ) with , , and symmetries.
View Article and Find Full Text PDFAcc Chem Res
April 2025
Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
ConspectusCoordination cages formed via subcomponent self-assembly have found applications in fields including separation, sensing, catalysis, and the stabilization of reactive species, due to their guest binding abilities. Subcomponent self-assembly, which combines dynamic covalent bond (C═N) formation and reversible metal coordination (N→Metal), has enabled the preparation of many intricate polyhedral structures with minimal synthetic effort. This method has been used to prepare multitopic pyridyl-imine ligands that form the edges or faces of polyhedra, with octahedral metal ions, including Fe, Co, and Zn, defining the vertices.
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