A hybrid organic-inorganic chain compound of the family Mn(II)-bpa-(NCO) is presented. It contains, unusually, five different dispositions for the bpa [1,2-bis(4-pyridyl)ethane] ligand. Water molecules and free bpa ligands occupy the voids of the structure. The compound shows significant antiferromagnetic-type interactions as a consequence of different exchange pathways.
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http://dx.doi.org/10.1039/c1dt10257e | DOI Listing |
J Hazard Mater
December 2024
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Eco-Chongming, Fudan University, Shanghai 200062, China; Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address:
Although trivalent manganese (Mn(III)) species have been recognized as crucial intermediates in the degradation of organic contaminants by Mn oxides, quantitative research on their specific roles remains scarce. Our study investigated the degradation processes of an organic pollutant, Bisphenol A (BPA), by dissolved Mn(III) and Mn(III)-bearing oxides, and elucidated the differences of the underlying mechanisms and reaction pathways between several Mn oxides and dissolved Mn(III). Our results indicated that BPA degradation rates with Mn(III)-bearing oxides alone follow the order: δ-MnO ≫ γ-MnOOH > MnO.
View Article and Find Full Text PDFJ Inorg Biochem
November 2024
Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States. Electronic address:
The synthesis and characterization of a new ligand, 1-(bis(pyridin-2-ylmethyl) amino)-2-methylpropane-2-thiolate (BPAS) and its nonheme iron complex, Fe(BPAS)Br (1), is reported. Reaction of 1 with O at -20 °C generates a high-spin iron(III)-hydroxide complex, [Fe(OH)(BPAS)(Br)] (2), that was characterized by UV-vis, Fe Mössbauer, and electron paramagnetic resonance (EPR) spectroscopies, and electrospray ionization mass spectrometry (ESI-MS). Density functional theory (DFT) calculations were employed to support the spectroscopic assignments.
View Article and Find Full Text PDFColloids Surf B Biointerfaces
November 2024
Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151, Malianwa North Road, Haidian District, Beijing 100193, China. Electronic address:
Efficient drug delivery and deeper penetration into tumors have become a primary focus of anti-tumor nanomedicine. In this study, pyridylboronic acid (BPA), as a targeting ligand for sialic acid, which is highly expressed on the surface of tumor cells, was conjugated with DSPE-PEG2k-NH to synthesize DSPE-PEG2k-BPA and used to encapsulate PTX. The resultant PTX@DSPE-PEG2k-BPA nanoparticles (DPB NPs) showed a mean particle size of 189.
View Article and Find Full Text PDFChemosphere
December 2024
College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, PR China. Electronic address:
Metal-organic frameworks (MOFs) recently gained immense popularity for the adsorption of organic impurities. In this work, the adsorptive separation of bisphenol A (BPA) from aqueous mixtures was explored utilizing three types of zirconium-based MOFs, namely MOF-808, UiO-66, and hierarchically porous UiO-66 (HP-UiO-66). The HP-UiO-66, which was etched by sodium acetate as the terminal ligand, generated large mesopores ranging from 40 to 300 Å due to the departure of partial linkers and metallic clusters.
View Article and Find Full Text PDFGenes (Basel)
November 2024
Biomedical Group (BIO277), Department of Nursing, Faculty of Health Sciences, University of Granada, Avda. Ilustración 60, 18016 Granada, Spain.
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