Thorough studies of tricyanomethanide-based ionic liquids - the influence of alkyl chain length of the cation

被引：5
|
作者：
Musial, Malgorzata [1 ]
Cheng, Shinian [1 ]
Wojnarowska, Zaneta [1 ]
Yao, Beibei [1 ]
Jurkiewicz, Karolina [1 ]
Paluch, Marian [1 ]
机构：
[1] Univ Silesia Katowice, Silesian Ctr Educ & Interdisciplinary Res, Inst Phys, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland
来源：
SOFT MATTER | 2020年 / 16卷 / 41期
关键词：
THERMOPHYSICAL PROPERTIES; SECONDARY RELAXATION; GLASS-TRANSITION; TEMPERATURE; DYNAMICS; ANION; IMIDAZOLIUM; MIXTURES; ORGANIZATION; SIMULATIONS;
D O I：
10.1039/d0sm01433h
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：
The glassy, supercooled, and normal liquid states of the 1-alkyl-3-methylimidazolium tricyanomethanide series [C(n)C(1)im][TCM] (n = 2, 4, 6, 8, and 16) were investigated by dielectric and mechanical (rheological) experiments supplemented by X-ray diffraction. The conductivity relaxation was found to be accompanied by a pronounced secondary relaxation. However, based on ambient and high-pressure results as well as the coupling model, we assumed that the latter one can not be classified as Johari-Goldstein relaxation. Moreover, the studies on the nanoscale organization of ionic liquids indicated that 1-alkyl-3-methylimidazolium tricyanomethanide ILs begin to form nanoscale aggregates when the alkyl chain of the cation has six carbon atoms.
引用
收藏
页码：9479 / 9487
页数：9
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