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Zastosuj identyfikator do podlinkowania lub zacytowania tej pozycji: http://hdl.handle.net/20.500.12128/22926
Tytuł: Pressure-induced liquid-liquid transition in a family of ionic materials
Autor: Wojnarowska, Żaneta
Cheng, Shinian
Yao, Beibei
Swadźba-Kwaśny, Małgorzata
McLaughlin, Shannon
McGrogan, Anne
Delavoux, Yoan
Paluch, Marian
Słowa kluczowe: Liquid−liquid transition; LLT; ionic materials
Data wydania: 2022
Źródło: "Nature Communication" (2022), vol. 13, art. no. 1342
Abstrakt: Liquid−liquid transition (LLT) between two disordered phases of single-component material remains one of the most intriguing physical phenomena. Here, we report a first-order LLT in a series of ionic liquids containing trihexyl(tetradecyl)phosphonium cation [P666,14]+ and anions of different sizes and shapes, providing an insight into the structure-property relationships governing LLT. In addition to calorimetric proof of LLT, we report that ion dynamics exhibit anomalous behavior during the LLT, i.e., the conductivity relaxation times (τσ) are dramatically elongated, and their distribution becomes broader. This peculiar behavior is induced by isobaric cooling and isothermal compression, with the τσ(TLL,PLL) constant for a given system. The latter observation proves that LLT, in analogy to liquid-glass transition, has an isochronal character. Finally, the magnitude of discontinuity in a specific volume at LLT was estimated using the Clausius-Clapeyron equation.
URI: http://hdl.handle.net/20.500.12128/22926
DOI: 10.1038/s41467-022-29021-0
ISSN: 2041-1723
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