Mesomorphic lanthanide complexes with azomethine ligands

被引：24
|
作者：
Van Deun, R [1 ]
Binnemans, K [1 ]
机构：
[1] Katholieke Univ Leuven, Dept Chem, Coordinat Chem Div, B-3001 Heverlee, Belgium
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 303卷
关键词：
lanthanides; rare earths; metallomesogens; liquid crystals; Schiff base; smectic mesophases;
D O I：
10.1016/S0925-8388(00)00623-X
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 synthesis and mesophase behaviour of lanthanide complexes with azomethine (Schiff base) ligands is described. The ligands are 4-tetradecyloxy-N-alkyl-2-hydroxybenzaldimines, where the alkyl chain on the imine nitrogen is C8H17, C12H25 or C18K37. The stoichiometry of the complexes formed by the reaction of the hydrated nitrates of the lanthanides with the azomethines is [Ln(LH)(3)(NO3)(3)]. All these coordination compounds exhibit liquid-crystalline properties. A viscous smectic A (SmA) mesophase is formed. The mesophase of these metallomesogens can be supercooled to a glassy state. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：146 / 150
页数：5
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