Multiphase Coexistence in an Ionic Liquid: 1-Decyl-3-methylimidazolium Nitrate
Complicated phase transitions were observed in a single-component 1-decyl-3-methylimidazolium nitrate ([C<sub>10</sub>mim][NO<sub>3</sub>]) 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-<i>Q</i> peaks representing a few kinds of layered structures were decomposed. Multiphase coexistence was observed in [C<sub>10</sub>mim][NO<sub>3</sub>] 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.
Authors
- Daisuke Okuyama (ORCID: https://orcid.org/0000-0001-8709-5177)
- Hiroaki Kishimura (ORCID: https://orcid.org/0000-0002-3419-550X)
- Hiroshi Abe (ORCID: https://orcid.org/0000-0002-2153-0540)
- Mikio Uruichi
- Shusei Maruyama
- Hajime Sagayama (ORCID: https://orcid.org/0000-0003-3816-9584)
Institutions
- High Energy Accelerator Research Organization (JP)
- Institute for Molecular Science (JP)
- National Defense Academy of Japan (JP)
Publication Details
- Journal
- The Journal of Physical Chemistry Letters
- Published
- 2024-10-16
- DOI
- https://doi.org/10.1021/acs.jpclett.4c02716
- Citations
- 6
- Primary Topic
- Ionic liquids properties and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.64
Funders
- Ministry of Education, Culture, Sports, Science and Technology