Multiphase Coexistence in an Ionic Liquid: 1-Decyl-3-methylimidazolium Nitrate.

Autor: Abe H; Department of Materials Science and Engineering, National Defense Academy, Yokosuka 239-8686, Japan., Maruyama S; Department of Materials Science and Engineering, National Defense Academy, Yokosuka 239-8686, Japan., Kishimura H; Department of Materials Science and Engineering, National Defense Academy, Yokosuka 239-8686, Japan., Uruichi M; Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan., Okuyama D; Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan., Sagayama H; Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan.
Jazyk: angličtina
Zdroj: The journal of physical chemistry letters [J Phys Chem Lett] 2024 Oct 24; Vol. 15 (42), pp. 10668-10676. Date of Electronic Publication: 2024 Oct 16.
DOI: 10.1021/acs.jpclett.4c02716
Abstrakt: Complicated phase transitions were observed in a single-component 1-decyl-3-methylimidazolium nitrate ([C 10 mim][NO 3 ]) ionic liquid (IL) using Raman spectroscopy and synchrotron small- and wide-angle X-ray scattering (SWAXS). Time-resolved synchrotron SWAXS could distinguish the phase transitions depending upon the cooling rate. Low- Q peaks representing a few kinds of layered structures were decomposed. Multiphase coexistence was observed in [C 10 mim][NO 3 ] at specific cooling rates (8-9 K/min). Ionic liquid crystals (ILCs), hybrid-layered crystals, and hexagonal close-packed structures coexisted simultaneously. At the cooling rate region, the reentrant phase transition of the ILC phase upon heating was observed.
Databáze: MEDLINE
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