How do high pressures change the Debye process of 4-methyl-3-heptanol?
How do high pressures change the Debye process of 4-methyl-3-heptanol?
复制标题
DOI：
10.1063/1.4816364
复制
发表时间：
2013-08
期刊：
影响因子：
--
通讯作者：
S. Pawlus;M. Wikarek;C. Gainaru;M. Paluch;R. Böhmer
中科院分区：
文献类型：
--
作者：
S. Pawlus;M. Wikarek;C. Gainaru;M. Paluch;R. Böhmer
4-甲基-3-庚醇是一种介电德拜过程相对较小的单羟基醇，在温度（143 K < T < 308 K）和压力（0.1 MPa < p < 864 MPa）范围内进行了研究。当在等时条件下进行监测时，即关注恒定的松弛时间，以及在等温条件下，Debye过程在施加压力时获得显着的强度。这种行为与先前研究的辛醇- 2-乙基-1-己醇形成对比，辛醇具有大的德拜过程。讨论了这些实验观察到的、明显可区分的压力演化，以反映氢键超分子结构形成的差异。
4-methyl-3-heptanol, a monohydroxy alcohol with a relatively small dielectric Debye process, is studied in wide ranges of temperature (143 K < T < 308 K) and pressure (0.1 MPa < p < 864 MPa). When monitored under isochronous conditions, i.e., focusing on constant relaxation times, as well as under isothermal conditions, the Debye process gains significant intensity upon pressure application. This behavior contrasts with that of the previously studied octanol 2-ethyl-1-hexanol, which features a large Debye process. These experimentally observed, clearly distinguishable pressure evolutions are discussed to reflect differences in the formation of hydrogen-bonded supramolecular structures.