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The role of intramolecular hydrogen bonding in photoelectron circular dichroism: the diastereoisomers of 1-amino-2-indanol.
Phys Chem Chem Phys
January 2025
Synchrotron Soleil, L'Orme des Merisiers, St. Aubin BP48, F-91192 Gif sur Yvette, France.
(1,2)--Aminoindanol and (1,2)--aminoindanol, denoted as -AI and -AI, are diastereoisomer aromatic aminoalcohols differing by the presence of a weak intramolecular hydrogen bond in -AI, which is absent in -AI. They also differ by the number of conformers under supersonic jet conditions, one for -AI and two for -AI. One-photon and resonance-enhanced two-photon photoelectron circular dichroism (PECD) spectra are obtained for the two molecules.
View Article and Find Full Text PDFChange in muscle fibre protein structure following salting process assessed by synchrotron deep UV fluorescence microspectroscopy.
Food Chem
January 2025
INRAE, UR QuaPA, F-63122 Saint-Genès-Champanelle, France.
Samples of pork teres major muscle were salted and tumbled with 0.9 %, 1.3 % & 1.
View Article and Find Full Text PDFDynamic Control of Weight-Update Linearity in Magneto-Ionic Synapses.
Nano Lett
January 2025
Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France.
Multifunctional hardware technologies for neuromorphic computing are essential for replicating the complexity of biological neural systems, thereby improving the performance of artificial synapses and neurons. Integrating ionic and spintronic technologies offers new degrees of freedom to modulate synaptic potentiation and depression, introducing novel magnetic functionalities alongside the established ionic analogue behavior. We demonstrate that magneto-ionic devices can perform as synaptic elements with dynamically tunable depression linearity controlled by an external magnetic field, a functionality reminiscent of neuromodulation in biological systems.
View Article and Find Full Text PDFStructural and functional characterization of a histidylated liposome for mRNA delivery.
J Control Release
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Centre de Biophysique Moléculaire, CBM, CNRS UPR4301, Orléans, France. Electronic address:
The development of lipid-based mRNA delivery systems has significantly facilitated recent advances in mRNA-based therapeutics. Liposomes, as the pioneering class of mRNA vectors, continue to lead in clinical trials. We previously developed a histidylated liposome that demonstrated efficient nucleic acid delivery.
View Article and Find Full Text PDFNew Silurian aculiferan fossils reveal complex early history of Mollusca.
Nature
January 2025
Earth Collections, University Museum of Natural History, Oxford, UK.
Mollusca is the second most species-rich animal phylum, but the pathways of early molluscan evolution have long been controversial. Modern faunas retain only a fraction of the past forms in this hyperdiverse and long-lived group. Recent analyses have consistently recovered a fundamental split into two sister clades, Conchifera (including gastropods, bivalves and cephalopods) and Aculifera, comprising Polyplacophora ('chitons') and Aplacophora.
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