Biocatalytic oxyfunctionalisation reactions are traditionally conducted in aqueous media limiting their production yield. Here we report the application of a peroxygenase in neat reaction conditions reaching product concentrations of up to 360 mM.
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http://dx.doi.org/10.1002/cctc.201901142 | DOI Listing |
Nanomaterials (Basel)
December 2024
Department of Advanced Materials Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga 816-8580, Fukuoka, Japan.
BiO particles are introduced as foreign additives onto SnO nanoparticles (NPs) surfaces for the efficient detection of oxygenated volatile organic compounds (VOCs). BiO-loaded SnO materials are prepared via the impregnation method followed by calcination treatment. The abundant BiO/SnO interfaces are constructed by the uniform dispersion of BiO particles on the SnO surface.
View Article and Find Full Text PDFACS Omega
December 2024
Industrial Efficient Utilization of Domestic Cigar Tobacco Key Laboratory of Sichuan Province, Shifang 618499, China.
Sustainable poly(lactic acid) (PLA)/poly(propylene carbonate) (PPC) blends were compatibilized by the environmentally friendly epoxidized soybean oil (ESO) through the chemical reaction of epoxy functional groups on ESO with the terminated carboxyl and hydroxyl groups of PLA/PPC. The compatibilization effect of ESO was confirmed by Fourier transform infrared spectroscopy, rheological property testing, differential scanning calorimetry, and morphological observations. It was revealed that the molecular chain entanglement between PLA and PPC was significantly enhanced and the dispersed PPC phase size was decreased, which endowed the blend with high viscosity modulus, low tan δ, and great stretchability, especially for the blend containing 1.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China. Electronic address:
Hydroxyl radical is the most oxidizing type of reactive oxygen species (ROS), which is closely related to body health. In this work, a novel turn-on fluorescent probe BIJ-H for OH with high sensitivity was reported. BIJ-H was synthesized by a three-step reaction, and the pure product was obtained by only washing with poor solvents.
View Article and Find Full Text PDFChemistry
December 2024
Constructor University Bremen gGmbH, School of Science, GERMANY.
The molecular confinement within rigid macrocyclic receptors can trigger catalytic activity and steer the selectivity of organic reactions. In this work, the dimerization of methylcyclopentadiene (MCPD) isomers in the presence of cucurbit[7]uril (CB7) was found to display, besides a large rate acceleration, a striking regioselectivity in aqueous solution at pH 3, different from the thermodynamic products predominating in the absence of the supramolecular catalyst. Among the different possible regioisomers and diastereomers, the endo-3,7-dimethyl-3a,4,7,7a-tetrahydro-1H-4,7-methanoindene adduct was selectively formed, which is otherwise found only as a minor product in the dimerization of neat MCPD or in commercial dimeric mixtures.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States.
Here we demonstrate direct ink write (DIW) additive manufacturing of carbon nanotube (CNT)/phenolic composites with heat dissipation and excellent electromagnetic interference (EMI) shielding capabilities without curing-induced deformation. Such polymer composites are valuable for protecting electronic devices from overheating and electromagnetic interference. CNTs were used as a multifunctional nanofiller to improve electrical and thermal conductivity, printability, stability during curing, and EMI shielding performance of CNT/phenolic composites.
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