Luminescence and Nanoheterogeneity in Manganese-Containing Ionic Liquid Mixtures
The luminescence properties of single-component and binary ionic liquids (ILs) were investigated in relation to their nanoheterogeneities. The cations of the ILs were 1-alkyl-3-methylimidazolium and trihexyl(tetradecyl)phosphonium ([P666,14]<sup>+</sup>). The anions were [Cl]<sup>-</sup>, [Br]<sup>-</sup>, [MnCl<sub>4</sub>]<sup>2-</sup>, and [MnBr<sub>4</sub>]<sup>2-</sup>. Even in the liquid state, the binary mixtures of η[P666,14][Br] + [P666,14]<sub>2</sub>[MnBr<sub>4</sub>] (η = 0.5, 1, 2, and 4) emitted green light at room temperature. In the mixed liquids, the prepeak derived from the nanoheterogeneity was observed at a low <i>Q</i> position on the small- and wide-angle X-ray scattering patterns. With increasing temperature, the luminescent intensities of the IL mixtures increased, contrary to the almost constant prepeak intensity. The luminescence intensity maximum of the mixture (η = 0.5) was observed at 403 K.
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)
- Akihisa Aimi (ORCID: https://orcid.org/0000-0001-6401-6261)
- Shusei Maruyama
- Fumiya Nemoto (ORCID: https://orcid.org/0000-0001-7412-9331)
- Hajime Sagayama (ORCID: https://orcid.org/0000-0003-3816-9584)
Institutions
- National Defence Academy (IN)
- High Energy Accelerator Research Organization (JP)
- Institute of Materials Structure Science (JP)
Publication Details
- Journal
- The Journal of Physical Chemistry B
- Published
- 2025-05-04
- DOI
- https://doi.org/10.1021/acs.jpcb.5c01792
- Citations
- 1
- Primary Topic
- Ionic liquids properties and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.39
Funders
- Ministry of Education, Culture, Sports, Science and Technology