Deuterium NMR evidences of slow dynamics in the nematic phase of a banana-shaped liquid crystal

被引：12

作者：

Domenici, Valentina

Fodor-Csorba, Katalin

Frezzato, Diego

Moro, Giorgio

Veracini, Carlo Alberto

机构：

[1] Univ Pisa, Dipartimento Chim & Chim Ind, I-56126 Pisa, Italy

[2] Res Inst Solid State Phys & Opt, Budapest, Hungary

[3] Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy

来源：

FERROELECTRICS | 2006年 / 344卷

关键词：

banana-shaped liquid crystals; nematic phase; dynamics; deuterium NMR;

D O I：

10.1080/00150190600966771

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experimental evidences of the slow dynamic behaviour of a banana-shaped liquid crystal (LC) detected by means of Deuterium Nuclear Magnetic Resonance (DNMR) in its nematic phase are reported. Deuterium line-shape and line-width trends of DNMR spectra of three selectively deuterium-labelled isotopomers of 4-chloro 1,3-phenylene bis {4-4 '-(11-undecenyloxy) benzoyloxy} benzoate (ClPbis11BB) are discussed in comparison with those of a deuterated probe dissolved in ClPbis11BB, used as LC solvent. Different dynamic regimes are observed for the central and lateral aromatic rings of the probe. These experimental remarks are discussed in terms of overall and internal molecular motions.

引用

页码：263 / 272

页数：10

共 25 条

[1] Structure and properties of liquid crystalline phases formed by achiral banana-shaped molecules [J].