四川大学学报（自然科学版）2017，Vol.54Issue(4)：803-806,4.DOI:10.3969/j.issn.0490-6756.2017.04.023
DMSO-乙醇混合溶液相对介电常数特异性的理论与实验研究
Dielectric properties of DMSO-ethanol mixtures:density functional theory and experiment
摘要
Abstract
Therelative permittivity of dimethyl sulfoxide (DMSO) solutions,ethanol (C2 H5 OH) solutions and their mixtures have been measured at 20 ℃,respectively.Surprisingly,at certain concentration,it appears an exceptional phenomenon that the imaginary part εr" of mixtures relative permittivity is larger than that of their pure components.To explain the exceptional phenomenon on the mixtures relative permittivity,a systematical investigation about the molecular clusters (DMSO)m (C2 H5 OH)n as well as their cluster radii have been given using DFT calculations.Comparing the cluster radii of the binary clusters (DMSO) m (C5 H5 N)n with that of the pure clusters (DMSO) m and (C2 H5 OH) n,one can find that the results have given an reasonable explanation of the exceptional phenomenon on the imaginary part εr"of the mixtures relative permittivity.关键词
DMSO/乙醇/介电常数/分子团簇Key words
DMSO/Ethanol/Relative permittivity/Molecular clusters分类
化学化工引用本文复制引用
武志燕,黄卡玛..DMSO-乙醇混合溶液相对介电常数特异性的理论与实验研究[J].四川大学学报（自然科学版）,2017,54(4):803-806,4.基金项目
国家重点基础研究发展“973计划”(2013CB328900,2013CB328905) （2013CB328900,2013CB328905）
