Charge ordering and scattering pre-peaks in ionic liquids and alcohols - Sorbonne Université Access content directly
Journal Articles Physical Chemistry Chemical Physics Year : 2017

Charge ordering and scattering pre-peaks in ionic liquids and alcohols

Abstract

The structural properties of ionic liquids and alcohols are viewed under the charge ordering process as a common basis to explain the peculiarity of their radiation scattering properties, namely the existence, or absence, of a scattering pre-peak. Through the analysis of models, it is shown that the presence, or absence, of a radiation scattering pre-peak is principally related to the symmetry breaking, or not, of the global charge order, induced by the peculiarities of the molecular shapes. This symmetry breaking is achieved, in practice, by the emergence of specific types of clusters, which manifest how global charge order has changed into a local form. The various atom-atom correlations witness the symmetry breaking induced by this re organization , and this is manifested into a pre-peak in the structure factor. This approach explains why associated liquids such as water do not show a scattering pre-peak. It also explains under which conditions core-soft models can mimic associating liquids.
Fichier principal
Vignette du fichier
Perera_2017_Charge_ordering_and.pdf (1.17 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01430812 , version 1 (10-01-2017)

Identifiers

Cite

Aurélien Perera. Charge ordering and scattering pre-peaks in ionic liquids and alcohols. Physical Chemistry Chemical Physics, 2017, 19 (2), pp.1062 - 1073. ⟨10.1039/C6CP07834F⟩. ⟨hal-01430812⟩
31 View
167 Download

Altmetric

Share

Gmail Facebook X LinkedIn More