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The amorphous basic cobalt carbonate synthesized a facile precipitation method exhibits much higher activity (97.1% conversion and 98.0% selectivity) in cinnamaldehyde transfer hydrogenation compared to cobalt oxide catalysts, due to the high-density acid-base sites and lattice distortion. This work offers an effective catalyst design for transfer hydrogenation reactions.
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http://dx.doi.org/10.1039/d5cc03182f | DOI Listing |
J Phys Chem Lett
September 2025
School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, China.
Photocatalysis holds significant promise for the reduction of CO to valued chemicals under mild conditions. However, its potential is severely limited by weak CO adsorption and slow proton-coupled electron transfer (PCET) rates. In this work, ZnInS-based catalysts with varying hydroxyl contents were synthesized via the solvothermal method.
View Article and Find Full Text PDFNatl Sci Rev
September 2025
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China.
Covalent organic frameworks (COFs) have great potential as versatile platforms for proton conduction. However, the commonly applied 2D COFs that are easy to design and synthesize have only 1D channels for proton conduction, limiting the formation of continuous hydrogen bonds due to the anisotropy between their crystalline grains. Herein, we report a strategy to construct 3D channels in 2D COFs by using rotaxane structures and eliminate the strong interlayer π-π interactions, facilitating the formation of smooth 3D proton-transfer pathways during guest doping.
View Article and Find Full Text PDFOrg Biomol Chem
September 2025
School of Chemistry & Environment; Yunnan Key Laboratory of Chiral Functional Substance Research and Application, Yunnan Minzu University, Yuehua Street, Kun-ming 650504, China.
The present study utilizes density functional theory (DFT) to systematically investigate the effect of a ligand on the mechanism of nickel-catalyzed asymmetric hydrogenation of cyclic -sulfonyl imines, employing alcohol protons as the hydrogen source. By comparing the free energies of three catalytic pathways involving various coordinated nickel complexes with different ligands, we identify that the enantio-determining step is the nickel-hydride transfer. Notably, the reaction pathway initiated by the Ni(0) species through oxidative addition of alcohol is determined to be the most favorable.
View Article and Find Full Text PDFChem Commun (Camb)
September 2025
Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) Université de Poitiers, CNRS. 4 rue Michel Brunet TSA 51106 86073, Poitiers Cedex 9, France.
This preliminary work opens a possible innovative route to investigating a paradigm shift in ammonia synthesis. It involves a hydrogen donor molecule (HDM) to favor ammonia synthesis at low pressure and temperature (1 bar, < 200 °C), subsequently reducing the environmental footprint of NH synthesis.
View Article and Find Full Text PDFChemistry
September 2025
Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, 02129, USA.
Nucleic acid-based therapeutics, such as oncolytic virotherapy or gene therapy, would benefit greatly from a reporter gene that induces endogenous production of a protein biomarker to noninvasively track the delivery, persistence, and spread with imaging. Several chemical exchange saturation transfer (CEST) reporter proteins detectable by magnetic resonance imaging (MRI) have been demonstrated to have high sensitivity. However, to date none can provide strong CEST contrast at a distinct resonance from that of endogenous proteins, limiting their specificity.
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