Synthesis and mesomorphism of new chiral imines and copper(II) complexes

被引：6

作者：

Paul, Manoj K. ^{[1
]}

Kalita, Gayatri ^{[1
]}

Laskar, Atiqur Rahman ^{[1
]}

Choudhury, Trirup D. ^{[2
]}

Rao, Nandiraju V. S. ^{[1
]}

机构：

[1] Assam Univ, Dept Chem, Silchar 788011, Assam, India

[2] Karimganj Coll, Dept Chem, Karimganj 788710, Assam, India

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2013年 / 1039卷

关键词：

Liquid crystals; Chirality; Metallomesogens; Schiff base and copper(II) complexes; FERROELECTRIC LIQUID-CRYSTALS; ELECTRIC-FIELD; METAL; BEHAVIOR; METALLOMESOGENS; SERIES; PD(II); CU(II); EPR;

D O I：

10.1016/j.molstruc.2013.02.007

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, characterization and mesomorphic properties of a series of N-(2-hydroxy-4-n-alkyloxybenzylidene) 4'-amino-2-methylbutylcinnamate and their copper(II) complexes are reported. The imines exhibited smectic A (SmA) and chiral smectic C (SmC*) phases while their copper(II) complexes displayed SmA-SmC phase variant. The compounds have been characterized by elemental analysis and spectroscopic studies. The phase transition temperatures were detected by differential scanning calorimetry (DSC) analysis and the phases are confirmed by polarizing optical microscopy (POM). The chiral phase (SmC*) of the ligand disappeared on complexation. The unwinding of the helical superstructure of SmC* phase under the influence of electric field and the observed optical textures of SmC* phase are also discussed. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：219 / 226

页数：8

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