Pascal Manuel

Supramolecular binding and separation of hydrocarbons within a functionalized porous metal–organic framework

Supramolecular interactions are fundamental to host-guest binding in many chemical and biological processes. Direct visualization of such supramolecular interactions within host-guest systems is extremely challenging, but crucial to understanding their function. We report a comprehensive study that combines neutron scattering, synchrotron X-ray and neutron diffraction, and computational modelling to define the detailed binding at a molecular level of acetylene, ethylene and ethane within the porous host NOTT-300. This study reveals simultaneous and cooperative hydrogen-bonding, π···π stacking interactions and intermolecular dipole interactions in the binding of acetylene and ethylene to give up to 12 individual weak supramolecular interactions aligned within the host to form an optimal geometry for the selective binding of hydrocarbons. We also report the cooperative binding of a mixture of acetylene and ethylene within the porous host, together with the corresponding breakthrough experiments and analysis of adsorption isotherms of gas mixtures.

Giant improper ferroelectricity in the ferroaxial magnet CaMn7O12.

In rhombohedral

A ferroelectric-like structural transition in a metal

{\mathrm{CaMn}}_{7}{\mathrm{O}}_{12}

Wish: The New Powder and Single Crystal Magnetic Diffractometer on the Second Target Station

, an improper ferroelectric polarization of magnitude

Monoclinic crystal structure of α-RuCl3 and the zigzag antiferromagnetic ground state

2870\text{ }\text{ }\ensuremath{\mu}\mathrm{C}\text{ }{\mathrm{m}}^{\ensuremath{-}2}

Magnetically driven suppression of nematic order in an iron-based superconductor

is induced by an incommensurate helical magnetic structure that evolves below

Ammonia-rich high-temperature superconducting intercalates of iron selenide revealed through time-resolved in situ X-ray and neutron diffraction.

{T}_{\mathrm{N}1}=90\text{ }\text{ }\mathrm{K}

Pinch points and Kasteleyn transitions in kagome ice

. The electric polarization was found to be constrained to the high symmetry threefold rotation axis of the crystal structure, perpendicular to the in-plane rotation of the magnetic moments. The multiferroicity is explained by the ferroaxial coupling mechanism, which in

Unravelling exceptional acetylene and carbon dioxide adsorption within a tetra-amide functionalized metal-organic framework

{\mathrm{CaMn}}_{7}{\mathrm{O}}_{12}

Observation of Binding and Rotation of Methane and Hydrogen within a Functional Metal–Organic Framework

gives rise to the largest magnetically induced, electric polarization measured to date.