Speciation-Dependent Molecular Mechanism of Electron Transfer from the c-Type Cytochrome MtrC to U(VI)-Ligand Complexes

Chemistry, Inorganic Chemistry, Environmental Chemistry, Earth Sciences, Geochemistry, Life Sciences, Microbiology,
c-type cytochrome   electron transfer   reduction kinetics   NMR   HR-XANES  

Uranium (U) is a radioactive element widely present in the environment, primarily existing in its hexavalent (U(VI)) and tetravalent (U(IV)) oxidation states. Under oxidizing conditions, U(VI) is the dominant stable form, while under reducing conditions, U(VI) can be reduced to U(IV). This reduction process can occur through abiotic pathways (e.g.,...

Formation of Amorphous Molybdenum Sulfide in Abiotic and Biotic Sulfidic Conditions: A Comparative Study on Molybdenum Sequestration Mechanisms

Chemistry, Inorganic Chemistry, Environmental Chemistry, Earth Sciences, Geochemistry,
paleoredox proxy   molybdenum sequestration   sulfate-reducing bacteria   molybdenum sulfides   molybdate   thiomolybdate  

Molybdenum (Mo) is one of the most abundant trace metals in the ocean, and its distinct behavior under different redox conditions makes it an effective indicator of paleoceanographic redox conditions. Particularly in anoxic and sulfidic environments, the speciation and behavior of Mo differ significantly from those in oxic environments. However, th...

Influence of Crystal Shape and Orientation on the Magnetic Microstructure of Bullet-Shaped Magnetosomes Synthesized by Magnetotactic Bacteria

Chemistry, Nanoscience, Inorganic Chemistry, Materials Chemistry, Materials Science, Life Sciences, Microbiology,
Magnetotactic bacteria   Magnetosomes   Crystal shape   Magnetic anisotropy   Off-axis electron holography   Magnetite   Nanocrystals  

Magnetotactic Bacteria (MTB) are a group of microorganisms capable of biomineralizing magnetosomes. Magnetosomes are membrane-bound magnetic nanocrystals primarily composed of magnetite (Fe₃O₄) or greigite (Fe₃S₄). These magnetosomes are arranged in chains or specific orientations within bacterial cells, endowing the bacteria with a magnetic dipole...

Facile Fabrication of Injectable Multifunctional Hydrogels Based on Gallium-Polyphenol Networks with Superior Antibacterial Activity for Promoting Infected Wound Healing

Chemistry, Nanoscience, Inorganic Chemistry, Polymer Chemistry, Medicine, Infectious Diseases, Rheumatology and Immunology, Pharmacy, Life Sciences, Biochemistry, Bioengineering, Immunology,
Infected wounds   Hydrogels   Polyphenols   Gallium ions   Antibacterial activity   Antibiotic-resistant pathogens   Wound healing  

A Novel Study on Multifunctional Hydrogels for Promoting Infected Wound Healing In the current clinical setting, infected wounds, especially those caused by antibiotic-resistant pathogens, have become a major challenge. These chronic or hard-to-heal wounds often suffer from delayed healing processes due to excessive inflammation, bacterial biofilm ...

A Spectroscopic Method for Distinguishing Two Novel Sandwich-Type Tungsten Oxide Cluster Compounds

Chemistry, Analytical Chemistry, Physical Chemistry, Inorganic Chemistry, Materials Chemistry,
tungsten oxide   cluster compound   crystal structure   infrared spectroscopy   2D correlation spectroscopy   thermal perturbation   magnetic perturbation  

Distinguishing Novel Sandwich-Type Tungsten Oxide Cluster Compounds Using Two-Dimensional Correlation Infrared Spectroscopy Background Introduction Polyoxometalates (POMs) are metal-oxygen cluster compounds linked through oxygen coordination with transition metal ions. They play significant roles in catalysis, optics, medicine, and magnetism. Howev...

Ion-Concentration-Dependent Dynamic Mechanism of Thiolactic-Acid-Capped Gold Nanoclusters Revealed by Fluorescence Spectra and Two-Dimensional Correlation Spectroscopy

Physics, Optics, Chemistry, Nanoscience, Analytical Chemistry, Physical Chemistry, Inorganic Chemistry,
gold nanoclusters   two-dimensional correlation spectroscopy   anti-galvanic reaction   photoluminescence mechanism   fluorescence spectroscopy   size effect  

Background and Research Questions Atomic gold nanoclusters (AuNCs), with particle sizes typically not exceeding 2 nanometers, have garnered extensive attention in recent years due to their unique photophysical properties, making them highly advantageous in biomedicine, catalysis, and sensing. These properties include excellent catalytic activity, t...