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Publications récentes

mai 30 2018

Organic Letters

Organic letters

Enamides equipped with N-acyliminium ion precursors were obtained through reduction of ynamides tethered to N-imides. Intramolecular TMSOTf-mediated trapping of N-acyliminium ions provided a variety of polyfunctionalized medium-sized diaza-heterocycles of putative pharmacological interest.   Référence : Lucile Andna and Laurence MieschTrapping of N-Acyliminium Ions with Enamides: An Approach...[En savoir plus]

mai 28 2018

Angewandte Chemie

Angewandte chemie

In search of magneto-optic materials the mononuclear compounds LnIII(depma)(NO3)3(hmpa)2 (Ln = Dy, Gd) were synthesized. The anthracene moieties undergo [4+4] dimerization when irradiated at 365 nm without loss of crystallinity. The Dy compound switches from a single-ion to a single-molecule magnet with doubling of the spin reversal barrier energy and from yellow-green to blue-white emission. The...[En savoir plus]

avril 23 2018

Cover PCCP

Modeling the adsorption equilibrium of small-molecule gases on graphene: effect of the volume to surface ratio Simone Conti and Marco Cecchini   “We find that the adsorption probability of molecules at surfaces critically depends on the available volume-to-surface ratio, which has important implications for 2D self-assembly."   Phys. Chem. Chem. Phys., 2018, 20, 9770-9779...[En savoir plus]

mars 13 2018

Chemistry : A European Journal

Putting a (molecular) spin on copper catalysis: Metalloenzymes routinely perform multielectronic transformations using multistate reactivity and redox cofactors but this behavior is difficult to emulate in synthetic systems. We report a rare example of molecular spin catalysis in the context of copper-catalyzed aziridination. The molecular spin fluxionality enabled by the redox-active ligands is...[En savoir plus]

févr. 14 2018

Phys. Chem. Chem. Phys.

graph. abstract

In most technological applications involving liquids or gases interacting with solids, the first event is the adsorption of molecules onto a solid surface. Here, we focus on the theoretical understanding of adsorption equilibrium at the solid–gas interface. In the limit of physisorption, we find that adsorption probability is independent of the initial concentration of monomers, whereas it varies...[En savoir plus]

févr. 6 2018

Chemical Science

drawing abstract

In mitochondria, cytochrome c oxidase (CcO) catalyses the reduction of oxygen (O2) to water by using a heme/copper hetero-binuclear active site. Here we report a highly efficient supramolecular approach for the construction of a water-soluble biomimetic model for the active site of CcO. A tridentate copper(II) complex was fixed onto 5,10,15,20-tetrakis(4-sulfonatophenyl)porphinatoiron(III)...[En savoir plus]

janv. 29 2018

ChemComm

drawing abstract

Porphyrin derivatives are highly relevant to biological processes such as light harvesting and charge separation. Their aromatic electronic structure and their accessible HOMO−LUMO gap render porphyrins highly attractive for the development of opto- and electro-active materials. Due to the often difficult covalent synthesis of multiporphyrins, self-assembly using metal complexation as the driving...[En savoir plus]