6533b7cffe1ef96bd1258674

RESEARCH PRODUCT

Low-Q peak in X-ray patterns of choline-phenylalanine and homophenylalanine: a combined effect of chain and stacking

Delia Francesca Chillura MartinoMarco CampetellaLorenzo GontraniEleonora Scarpellini

subject

DiffractionChemical substancePhenylalanineStackingGeneral Physics and AstronomyPhenylalanine02 engineering and technologyIonic liquid010402 general chemistry01 natural sciencesCholinePhysics and Astronomy (all)chemistry.chemical_compoundAminoacidSettore CHIM/02Organic chemistryPhysical and Theoretical ChemistryAlkylcholine-amino acid ionic liquids EDXD; ion pairs; pre-peak; renewable materialschemistry.chemical_classificationSmall-angle X-ray scatteringSAXS; Choline; Phenylalanine; Aminoacids; Ionic liquidsAromaticitySAXS021001 nanoscience & nanotechnologyIonic liquids0104 chemical sciencesCrystallographychemistryIonic liquid0210 nano-technologyAminoacids

description

Abstract In this contribution we report for the first time the X-ray patterns of choline-phenylalanine and choline-homophenylalanine ionic liquids. The presence of a low Q peak in both systems is another evidence that a long alkyl chain is not always needed to establish a nanodomain segregation in the liquid sufficient to be revealed by the diffraction experiment. These new data are compared with the diffraction patterns and the theoretical calculations of other choline-aminoacid ionic liquids recently reported. A significant role might be played by the stacking interactions between aromatic rings.

yearjournalcountryeditionlanguage
2016-09-01
10.1016/j.cplett.2016.08.015http://hdl.handle.net/11573/927447