Deuteron and proton NMR study of D2, p-dichlorobenzene and 1,3,5-trichlorobenzene in bimesogenic liquid crystals with two nematic phases

被引：8

作者：

Burnell, E. E. ^{[1
]}

Ahmed, Z. ^{[2
]}

Welch, C. ^{[2
]}

Mehl, G. H. ^{[2
]}

Dong, R. Y. ^{[3
]}

机构：

[1] Univ British Columbia, Dept Chem, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada

[2] Univ Hull, Dept Chem, Kingston Upon Hull HU6 7RX, N Humberside, England

[3] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

来源：

CHEMICAL PHYSICS LETTERS | 2016年 / 659卷

基金：

英国工程与自然科学研究理事会;

关键词：

MOLEKULAR-STATISTISCHE THEORIE; NUCLEAR-MAGNETIC-RESONANCE; ORIENTATIONAL ORDER; KRISTALLINFLUSSIGEN PHASE; MIXTURES; SOLUTE; SOLVENTS; DIMERS;

D O I：

10.1016/j.cplett.2016.07.005

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 solutes dideuterium, 1,3,5-trichlorobenzene and p-dichlorobenzene (pdcb) are co-dissolved in a 61/39 wt% mixture of CBC9CB/5CB, a bimesogenic liquid crystal with two nematic phases. NMR spectra are collected for each solute. The local electric field gradient (F-ZZ) is obtained from the dideuterium spectrum. A double Maier-Saupe potential (MSMS) is used to rationalize the order parameters of pdcb. The liquid-crystal fields G(1) and G(2) are taken to be due to size and shape interactions and interactions between the solute molecular quadrupole and the mean F-ZZ of the medium. The F-ZZ's obtained from D-2 and G(2) (from pdcb) are compared and discussed. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：48 / 54

页数：7

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