scholarly journals Probing the Local Structure of Pure Ionic Liquid Salts with Solid- and Liquid-State NMR

ChemPhysChem ◽  
2010 ◽  
Vol 11 (1) ◽  
pp. 260-268 ◽  
Author(s):  
Peter G. Gordon ◽  
Darren H. Brouwer ◽  
John A. Ripmeester
Keyword(s):  
Ionic Liquid ◽  
Local Structure ◽  
Liquid State ◽  
Liquid Salts

The local structure in the BmimPF6/acetonitrile mixture: the charge distribution effect

2018 ◽  
Vol 20 (34) ◽  
pp. 21890-21902 ◽  
Author(s):  
Volodymyr Koverga ◽  
Oleg N. Kalugin ◽  
François-Alexandre Miannay ◽  
Yevheniia Smortsova ◽  
Kateryna Goloviznina ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Binary Mixture ◽  
Charge Distribution ◽  
Local Structure ◽  
Composition Range ◽  
Entire Composition Range ◽  
Distribution Effect

The effect of the charge distribution on the local structure in the binary mixture of 1-butyl-3-methylimidazolium hexafluorophosphate (BmimPF6) ionic liquid and acetonitrile is investigated over the entire composition range.

Correlation between local structure and stability of supercooled liquid state in Zr-based metallic glasses

2007 ◽  
Vol 449-451 ◽  
pp. 90-94 ◽  
Author(s):  
Junji Saida ◽  
Muneyuki Imafuku ◽  
Shigeo Sato ◽  
Takashi Sanada ◽  
Eiichiro Matsubara ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Local Structure ◽  
Liquid State ◽  
Supercooled Liquid ◽  
Structure And Stability ◽  
Supercooled Liquid State

Liquid-state electrical components using photoresponsive ionic liquid

2019 ◽  
Vol 2019.10 (0) ◽  
pp. 19am3PN333
Author(s):  
Takashi Kozaki ◽  
Satoshi Saito ◽  
Yota Otsuki ◽  
Ryosuke Matsuda ◽  
Yutaka Isoda ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid State ◽  
Electrical Components

Local Structures around Zr, Ni and Cu for the Zr67Cu33 and Zr67Ni33 Metallic Glasses

2007 ◽  
Vol 539-543 ◽  
pp. 1959-1963 ◽  
Author(s):  
M. Matsuura ◽  
Masaki Sakurai ◽  
Wei Zhang ◽  
A. Inoue
Keyword(s):  
Synchrotron Radiation ◽  
Metallic Glasses ◽  
Local Structure ◽  
Liquid State ◽  
Local Structures ◽  
The Stability

XAFS measurements of the Cu, Ni and Zr K-edges for the melt-quenched Zr67Cu33 and Zr67Ni33 metallic glasses were curried out using synchrotron radiation at 20K. Fitting calculations for the EXAFS results reveal that local structure around Ni and Zr in Zr67Ni33 is well represented by those for the crystalline Zr2Ni, while local structure around Zr in Zr67Cu33 is better fitted by an icosahedron rather than crystalline Zr2Cu. Such differences of the local structure attribute to the differences of the stability of super-cooled liquid state and glass formability between Zr67Cu33 and Zr67Ni33 metallic glasses.

scholarly journals Evidence of a liquid–liquid transition in a glass-forming ionic liquid

2021 ◽  
Vol 118 (11) ◽  
pp. e2020878118
Author(s):  
Matthew A. Harris ◽  
Thomas Kinsey ◽  
Durgesh V. Wagle ◽  
Gary A. Baker ◽  
Joshua Sangoro
Keyword(s):  
Ionic Liquid ◽  
Liquid State ◽  
Local Order ◽  
Coordination Numbers ◽  
Glass Forming ◽  
X Ray Scattering ◽  
Liquid Transition ◽  
High Propensity ◽  
Static Dielectric Permittivity ◽  
Show Evidence

A liquid–liquid transition (LLT) is a transformation from one liquid to another through a first-order transition. The LLT is fundamental to the understanding of the liquid state and has been reported in a few materials such as silicon, phosphorus, triphenyl phosphite, and water. Furthermore, it has been suggested that the unique properties of materials such as water, which is critical for life on the planet, are linked to the existence of the LLT. However, the experimental evidence for the existence of an LLT in many molecular liquids remains controversial, due to the prevalence and high propensity of the materials to crystallize. Here, we show evidence of an LLT in a glass-forming trihexyltetradecylphosphonium borohydride ionic liquid that shows no tendency to crystallize under normal laboratory conditions. We observe a step-like increase in the static dielectric permittivity at the transition. Furthermore, the sizes of nonpolar local domains and ion-coordination numbers deduced from wide-angle X-ray scattering also change abruptly at the LLT. We independently corroborate these changes in local organization using Raman spectroscopy. The experimental access to the evolution of local order and structural dynamics across a liquid–liquid transition opens up unprecedented possibilities to understand the nature of the liquid state.

Sign in / Sign up

Export Citation Format

Share Document