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

页码：9479 / 9487

页数：9