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[Formula: see text]-roaming dynamics in the formation of [Formula: see text] following two-photon double ionization of ethanol and aminoethanol.
Sci Rep
January 2025
Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark.
Roaming reactions involving a neutral fragment of a molecule that transiently wanders around another fragment before forming a new bond are intriguing and peculiar pathways for molecular rearrangement. Such reactions can occur for example upon double ionization of small organic molecules, and have recently sparked much scientific interest. We have studied the dynamics of the [Formula: see text]-roaming reaction leading to the formation of [Formula: see text] after two-photon double ionization of ethanol and 2-aminoethanol, using an XUV-UV pump-probe scheme.
View Article and Find Full Text PDFThe endothelial surface layer-glycocalyx - Universal nano-infrastructure is fundamental to physiology, cell traffic and a complementary neural network.
Adv Colloid Interface Sci
January 2025
Breakthrough Technologies, Deakin, ACT, Australia.
The glycocalyx and its associated endothelial surface layer which lines all cell membranes and most tissues, dwarfs the phospholipid membrane of cells in extent. Its major components are sulphated polymers like heparan and chondroitin sulphates and hyaluronic acid. These form a fuzzy layer of unknown structure and function.
View Article and Find Full Text PDFThe kinetics of aqueous thiolated arsenic oxidation.
J Hazard Mater
January 2025
Department of Geological Sciences & Engineering, Queen's University, Kingston, Ontario, Canada. Electronic address:
Thiolated arsenic (As) compounds have been identified in various natural and engineered environments worldwide and are important for the biogeochemical cycling of As, yet quantitative data regarding their stability and transformation rates remains scarce. This study investigates the oxidation kinetics of mono-, di-, and tri-thioarsenate at varying pH, Fe, and (thio-)As concentrations in the aqueous phase. Experiments conducted over four weeks revealed that all thioarsenates were oxidized faster at lower pH, with rates of up to several μmoles/L/d at a pH of 3.
View Article and Find Full Text PDFResidence time of particles in indoor surface networks.
J Hazard Mater
January 2025
Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, PR China; Faculty of Architecture, The University of Hong Kong, Hong Kong, PR China. Electronic address:
Infectious microbes can spread rapidly from fomites (contaminated surfaces) via hand touch, with prolonged residence time on surfaces increasing transmission risk by extending exposure periods and/or involving more susceptible individuals. Existing studies have focused on decreasing microbial contamination, but not on the need for rapid removal from surface systems. This study introduces residence time as the time that a microbe spends within the surface system.
View Article and Find Full Text PDFUltralow Coordination Copper Sites Compartmentalized within Ordered Pores for Highly Efficient Electrosynthesis of -Propanol from CO.
J Am Chem Soc
January 2025
Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
Coordinatively unsaturated copper (Cu) has been demonstrated to be effective for electrifying CO reduction into C products by adjusting the coupling of C-C intermediates. Nevertheless, the intuitive impacts of ultralow coordination Cu sites on C products are scarcely elucidated due to the lack of synthetic recipes for Cu with low coordination numbers and its vulnerability to aggregation under reductive potentials. Herein, computational predictions revealed that Cu sites with higher levels of coordinative unsaturation favored the adsorption of C and C intermediates.
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