{"title":"Luminescence and Nanoheterogeneity in Manganese-Containing Ionic Liquid Mixtures.","authors":"Hiroshi Abe, Shusei Maruyama, Fumiya Nemoto, Akihisa Aimi, Hiroaki Kishimura, Daisuke Okuyama, Hajime Sagayama","doi":"10.1021/acs.jpcb.5c01792","DOIUrl":null,"url":null,"abstract":"<p><p>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.</p>","PeriodicalId":60,"journal":{"name":"The Journal of Physical Chemistry B","volume":" ","pages":"4756-4764"},"PeriodicalIF":2.8000,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry B","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1021/acs.jpcb.5c01792","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/5/4 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
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]+). The anions were [Cl]-, [Br]-, [MnCl4]2-, and [MnBr4]2-. Even in the liquid state, the binary mixtures of η[P666,14][Br] + [P666,14]2[MnBr4] (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 Q 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.
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