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Hybrid Mn Atomic Clusters/Single-Dispersed Atoms with Dual Antioxidant Activities for a Chemiluminescent Immunoassay.
Anal Chem
July 2024
Key Laboratory of Luminescence Analysis and Molecular Sensing (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
Single-dispersed atoms (SDAs) as catalysts have drawn extensive attention due to their ultimate atom utilization efficiency and desirable catalytic capability. Atomic clusters (ACs) with potential multiple enzyme-like activities also display great practicability in catalysis-based biosensing. In this work, hybrid Mn ACs/SDAs were implanted in the frameworks of defect-engineered MIL 101(Cr) modulated by excess acetic acid, with a high loading capability of 13.
View Article and Find Full Text PDFTotal Synthesis of Mycinamicin IV as Integral Part of a Collective Approach to Macrolide Antibiotics.
Chemistry
February 2022
Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany.
The total synthesis of the 16-membered macrolide mycinamicin IV is outlined, which complements our previously disclosed, largely catalysis-based route to the aglycone. This work must also be seen in the context of our recent conquest of aldgamycin N, a related antibiotic featuring a similar core but a distinctly different functionalization pattern. Taken together, these projects prove that the underlying blueprint is integrative and hence qualifies for a collective approach to this prominent class of natural products.
View Article and Find Full Text PDFCarbon nitride-doped melamine-silver adsorbents with peroxidase-like catalysis and visible-light photocatalysis: Colorimetric detection and detoxification removal of total mercury.
J Hazard Mater
April 2021
School of Life Sciences, Huzhou University, Huzhou, 313000 Zhejiang, PR China; Rizhao Key Laboratory of Marine Medicine and Materials Application Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165 Shandong, PR China. Electronic address:
Mesoporous melamine-silver (MA-Ag) nanocomposites doped with carbon nitride quantum dots (CN) were fabricated simply by the controlled supramolecular self-assembly. It was discovered that the resulting nanoflower-like CN@MA-Ag nanocomposites could exhibit the peroxidase-like catalysis, which could be specifically enhanced by Hg by forming Ag@Hg alloys. A double catalysis-based colorimetric method was thereby developed for the fast detecting of Hg and Hg in wastewater samples, with the levels down to 0.
View Article and Find Full Text PDFInterfacial assembly of mussel-inspired polydopamine@Ag core-shell nanoparticles as highly recyclable catalyst for nitroaromatic pesticides degradation.
Sci Total Environ
May 2019
State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, PR China.
With the abundant use of pesticides in agriculture and grassland farming, water contamination unavoidably occurs due to the leaching of pesticide residues into environment. Now, most of the research on degradation of nitroaromatic pesticides residues has focused on nano catalysis-based method, however, effective post-reaction separation and recycling of the tiny nanocatalysts is also a significant technological challenge to be addressed. Herein, we report a simple and versatile strategy for the construction of efficient and recyclable catalysts of polydopamine (PDA)@Ag/polystyrene (PS) films for degradation of pesticides based on multi-purpose PDA microspheres inspired by mussel adhesion.
View Article and Find Full Text PDFCatalysis-Based Total Syntheses of Pateamine A and DMDA-Pat A.
J Am Chem Soc
August 2018
Max-Planck-Institut für Kohlenforschung , D-45470 Mülheim/Ruhr , Germany.
The marine natural product pateamine A (1) and its somewhat simplified designer analogue DMDA-Pat A (2) (DMDA = desmethyl-desamino) are potently cytotoxic compounds; most notably, 2 had previously been found to exhibit a promising differential in vivo activity in xenograft melanoma models, even though the ubiquitous eukaryotic initiation factor 4A (eIF4A) constitutes its primary biological target. In addition, 1 had also been identified as a possible lead in the quest for medication against cachexia, an often lethal muscle wasting syndrome affecting many immunocompromised or cancer patients. The short supply of these macrodiolides, however, rendered a more detailed biological assessment difficult.
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