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Assembling Di- and Polynuclear Cu(I) Complexes with Rigid Thioxanthone-Based Ligands: Structures, Reactivity, and Photoluminescence.
Inorg Chem
December 2024
Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
Thioxanthone (TX) molecules and their derivatives are well-known photoactive compounds. Yet, there exist only a handful of luminescent systems combining TX with transition metals. Recently, we reported a TX-based PSP pincer ligand () that appears as a promising platform for filling this niche.
View Article and Find Full Text PDFHarnessing Oxetane and Azetidine Sulfonyl Fluorides for Opportunities in Drug Discovery.
J Am Chem Soc
December 2024
Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
Four-membered heterocycles such as oxetanes and azetidines represent attractive and emergent design options in medicinal chemistry due to their small and polar nature and potential to significantly impact the physiochemical properties of drug molecules. The challenging preparation of these derivatives, especially in a divergent manner, has severely limited their combination with other medicinally and biologically important groups. Consequently, there is a substantial demand for mild and effective synthetic strategies to access new oxetane and azetidine derivatives and molecular scaffolds.
View Article and Find Full Text PDFPrecursor-free synthesis of carbon quantum dots and carbon microparticles in supercritical acetone.
Commun Chem
November 2024
Bio-Nano Electronics Research Centre, Toyo University, 2100, Kujirai, Kawagoe, Japan.
Carbon quantum dots (CQDs) have recently received a lot of attention due to their unique physical properties, and their environmentally friendly features such as low toxicity and high biocompatibility. Supercritical fluids, which possess unusual properties such as high solubility, high diffusivity, low viscosity and zero surface tension, are now commonly used particularly in the fields of electronic, chemical and materials science and engineering. Here, we synthesise carbon nano/microparticles in supercritical acetone, in which neither external molecules nor starting materials are dissolved/dispersed.
View Article and Find Full Text PDFPhotocatalytic Substrate Oxidation Catalyzed by a Ruthenium(II) Complex with a Phenazine Moiety as the Active Site Using Dioxygen as a Terminal Oxidant.
J Am Chem Soc
December 2024
Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
Article Synopsis
- Researchers developed a method for oxidizing aromatic compounds using oxygen as the oxidant under visible light, producing only 2-electron oxidized products in acidic water.
- The photocatalyst used is a ruthenium complex with a specific pyrazine-containing ligand, which is activated by its protonated form rather than the complex itself.
- The study demonstrates an efficient process for oxidizing benzyl alcohol to benzaldehyde with high turnover and highlights that the oxidation mechanism involves a unique pathway not consistent with traditional photocatalytic processes.
Prussian blue nanocages as efficient radical scavengers and photothermal agents for reducing amyloid-beta induced neurotoxicity.
Colloids Surf B Biointerfaces
February 2025
CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China; Sino-Danish College, Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:
The unusual accumulation of amyloid-beta 1-42 (Aβ) is an essential pathological feature of Alzheimer's disease (AD), and development of Aβ nanomodulators offers a potentially therapeutic approach to AD. Here, we report facile synthesis of the hollow mesocrystalline Prussian blue nanocages (HMPBs), which serve as versatile Aβ modulators. Due to the hollow nanostructures and large specific surface area, they can effectively inhibit Aβ aggregation by adsorption.
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