Files and links (1)
SubmittedOpen Access (License Unspecified), Open
Journal article
Spatial and thermal signatures of alpha and beta relaxations in glassy and glacial aliphatic ionic liquids
The Journal of chemical physics, v 150(14), pp 144506-144506
14 Apr 2019
PMID: 30981243
Abstract
The competition between Coulomb and van der Waals interactions brings forth unique dynamic features and broad applications to ionic liquids. Herein, we present a combined calorimetric, X-ray diffraction, incoherent elastic, and quasi-elastic neutron scattering study, over a wide temperature range (180-340 K), of the relaxational dynamics of the liquid, supercooled liquid, crystalline, glassy, and glacial states of two model ionic liquids: tributylmethylammonium (a good glass-former) and butyltrimethylammonium (a good crystal-former) cations and the bis(trifluoromethanesulfonyl) imide anion. In both systems, we observed two distinct relaxation processes. The Q-dependence of the respective relaxation time shows that the alpha-process is diffusive, while the beta-process is modulated by the structure of the liquids.
Metrics
Details
- Title
- Spatial and thermal signatures of alpha and beta relaxations in glassy and glacial aliphatic ionic liquids
- Creators
- Thamires A. Lima - University of Illinois Urbana-ChampaignZhixia Li - University of Illinois Urbana-ChampaignMadhusudan Tyagi - University of Maryland, College ParkMauro C. C. Ribeiro - Universidade de São PauloY. Z - Univ Illinois, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA
- Publication Details
- The Journal of chemical physics, v 150(14), pp 144506-144506
- Publisher
- American Institute of Physics
- Number of pages
- 7
- Grant note
- 2016/24241-5; 2012/13119-3 / FAPESP; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) DMR-1508249 / NSF; National Science Foundation (NSF) DMR-1508249 / NIST; National Institute of Standards & Technology (NIST) - USA DE-SC0014084 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000464451300037
- Scopus ID
- 2-s2.0-85064198300
- Other Identifier
- 991019298719104721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Physics, Atomic, Molecular & Chemical