Universal scaling behavior of entropy and conductivity in ionic liquids


Authors / Editors


Research Areas

No matching items found.


Publication Details

Output type: Journal article

UM6P affiliated Publication?: Yes

Author list: Cheng S., Musiał M., Wojnarowska Z., Ngai K.L., Jacquemin J., Paluch M.

Publisher: Elsevier

Publication year: 2020

Journal: Journal of Molecular Liquids (0167-7322)

Volume number: 316

ISSN: 0167-7322

URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85088922942&origin=inward


View in Web of Science | View on publisher site | View citing articles in Web of Science


Abstract

The density scaling behavior of dynamics and thermodynamics is investigated in ionic liquids. By comparing the scaling exponent of different dynamic quantities (dc-conductivity, viscosity, and diffusion) of a series of homologous ionic liquids, we discover that longer alkyl chain in the cation provides lower scaling value. Additionally, a systematic study on the entropy scaling behavior is carried out based on various samples within different structures and strength of interactions between anions and cations. Interestingly, for all tested samples, a linear relationship between Grüneisen parameter (scaling exponent) and entropy was obtained, and more importantly, the generated slope shows a close relation to the typical interactions (van der Waals and Coulomb forces, and H-bonds). Therefore, we establish a new correlation for this group of compounds.


Keywords

No matching items found.


Documents

No matching items found.


Last updated on 2021-14-06 at 23:19