High-pressure-driven multiple-glass transitions of ionic liquids: 1-alkyl-3-methylimidazolium nitrate

被引：2

作者：

Abe, Hiroshi ^{[1
]}

Hirano, Takaaki ^{[1
]}

Kishimura, Hiroaki ^{[1
]}

Takekiyo, Takahiro ^{[2
]}

Yoshimura, Yukihiro ^{[2
]}

机构：

[1] Natl Def Acad, Dept Mat Sci & Engn, Yokosuka 2398686, Japan

[2] Natl Def Acad, Dept Appl Chem, Yokosuka 2398686, Japan

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2024年 / 402卷

关键词：

Ionic liquids; High pressure; Multiple-glass transition; Nanoheterogeneous double glass; X-RAY; AGGREGATION; STATE; WATER;

D O I：

10.1016/j.molliq.2024.124764

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ionic liquids, specifically 1-alkyl-3-methylimidazolium nitrate, [Cnmim][NO3] (n = 4, 6, and 8), underwent pressure-induced amorphization. High-pressure-driven multiple-glass transitions were clarified through Raman spectroscopy. Both double- and triple-glass transitions were observed in [Cnmim][NO3]. Small- and wide-angle X-ray scattering revealed a prepeak representing nanoheterogeneity in [Cnmim][NO3] (n = 6 and 8) at ambient pressure. Despite the decrease in intensity at glass transition pressure, the prepeak of [C8mim][NO3] still existed. In [C8mim][NO3], the first glass-glass transition occurred a nanoheterogeneous double glass. The second glass-glass transition marked the transition from a heterogeneous to a homogeneous glass.

引用

页数：7

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