X-Ray scattering (WAXS) | Ricerc@Sapienza

SAXSLab Sapienza

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SAXSLab Sapienza is a laboratory for structural characterization which operates the X-ray diffractometer Xeuss 2.0 HR P300K Q-Xoom (XENOCS), purchased thanks to the grant “Grandi Attrezzature d’Ateneo 2015”.

The instrument is capable of Small Angle X-Ray Scattering (SAXS), Wide Angle X-ray Scattering (WAXS) and Grazing Incidence Small Angle Scattering (GISAXS) experiments. These techniques are widely applicable for the characterization of matter at the nano- and meso-scale.

New evidences about conformational equilibrium in ammonium-TFSI ionic liquids: the X-Ray scattering patterns of TMHA- and TMPA-TFSI interpreted with molecular dynamics simulations

The X-Ray scattering patterns of the two ionic liquids, N-trimethyl-N-propylammonium bis(triﬂuoromethanesulfonyl)imide (TMPA-TFSI) and N-trimethyl-N-hexylammonium bis(triﬂuoromethanesulfonyl)imide (TMHA-TFSI), sharing a common anion and differing in the length of the alkyl chain of the cation, were measured at room temperature. Molecular dynamics calculations supported the interpretation of the data. The two force field models, GAFF and DLPOLY 4, were adopted to simulate the scattering patterns.