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FeMo integrated covalent organic frameworks: Peroxidase-mimetic colorimetric biosensors for multivariate sensing hydrogen peroxide and ascorbic acid in serum and beverages.
Food Chem
March 2025
Key Laboratory for Photochemical Biomaterials and Energy Storage Materials of Heilongjiang Province, Key Laboratory for Photonic and Electronic Bandgap Materials of Ministry of Education, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China. Electronic address:
An efficient and readable sensor is desirable for food safety and diagnosis. Herein, a homogeneous mimicking enzyme was constructed by encapsulating polyoxometalate (NH₄)₃[FeMo₆O₁₈(OH)₆]·6H₂O (FeMo) into the covalent organic framework (FeMo@COF). Coordinating the spatial confinement effect of COF, FeMo exhibited superior peroxide-like activity to catalyze HO to O• which achieved the "on-off" consecutive sensing of HO and AA via a readable colorimetric mode, with the limit of detection (LOD) at 30 μM and 0.
View Article and Find Full Text PDFQuad-Nanopore Array Enables High-Resolution Identification of Four Single-Stranded DNA Homopolymers.
ACS Nano
March 2025
State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, Electron Microscopy Laboratory, School of Physics, Peking University, Beijing 100871, China.
The solid-state nanopore technique holds the potential to develop mechanically stable and miniaturized DNA sequencing devices. However, the limited temporal resolution due to the high electric field inside the nanopore and the lack of an effective speed control strategy have hindered the realization of sequencing. Here, we reported a quad-array (four nanopores milled with ∼30 nm interpore spacing as a detection unit) that induced a redistribution of the electric field inside and outside the nanopore array and offered high-resolution discrimination of four ssDNA homopolymer types.
View Article and Find Full Text PDFNo matter what energy input: tetradentate PNNP-ligated iridium complexes for CO2 reduction.
Chemistry
March 2025
Nagoya University School of Science Graduate School of Science: Nagoya Daigaku Rigakubu Daigakuin Rigaku Kenkyuka, Integrated Research Consortium on Chemical Sciences (IRCCS), Furo-cho, Chikusa-ku, 464-8602, Nagoya, JAPAN.
The efficient conversion of carbon dioxide (CO2) into valuable products remains a keystone of sustainable energy research. Achieving this goal requires catalytic methodologies that can adapt to diverse energy sources such as light, heat, or electricity. This concept highlights the remarkable versatility of tetradentate PNNP-ligated iridium complexes, (PNNP)Ir, as multifunctional catalysts, which demonstrate outstanding performance in CO2 reduction across photochemical, thermal, and electrochemical systems.
View Article and Find Full Text PDFUniform Single-Domain Liquid Crystalline Hexagonal Rods by Synchronized Polymerization and Self-Assembly Using Disc-Shaped Monomers.
J Am Chem Soc
March 2025
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
The fabrication of nanostructures from polycyclic aromatic hydrocarbons (PAHs) is highly attractive owing to their unique optical, electrical, and magnetic properties. However, the creation of uniform and well-defined PAH nanostructures by self-assembly still remains a significant challenge. Herein, we report that highly uniform hexagonal rods can be obtained from triphenylene (TP)-derived monomers by synchronized polymerization and self-assembly (SPSA).
View Article and Find Full Text PDFMethane Beryllation Catalyzed by a Base Metal Complex.
J Am Chem Soc
March 2025
Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
The homogeneous catalytic functionalization of methane is extremely challenging due to the relative nonpolarity and high C-H bond strength of this hydrocarbon. Here, using catalytic quantities (10 mol %) of CpMn(CO) or Cp*Re(CO), the conversion of methane and benzene C-H bonds to C-Be and H-Be bonds by CpBeBeCp has been achieved under photochemical conditions. Possible intermediates in the beryllation reactions─-bis(beryllyl)-manganese and -rhenium complexes─were also isolated.
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