Polar Switching in a Lyotropic Columnar Nematic Liquid Crystal Made of Bowl-Shaped Molecules

被引：31

作者：

Guilleme, Julia ^{[1
]}

Cavero, Emma ^{[2
]}

Sierra, Teresa ^{[2
]}

Ortega, Josu ^{[3
]}

Folcia, Cesar L. ^{[4
]}

Etxebarria, Jesus ^{[4
]}

Torres, Tomas ^{[1
]}

Gonzalez-Rodriguez, David ^{[1
]}

机构：

[1] Univ Autonoma Madrid, Dept Quim Organ, E-28049 Madrid, Spain

[2] Univ Zaragoza, CSIC, ICMA, Dept Quim Orgon,Fac Ciencias, E-50009 Zaragoza, Spain

[3] Univ Basque Country, Fac Ciencia & Tecnol, Dept Fis Aplicada 2, Bilbao 48080, Spain

[4] Univ Basque Country, Fac Ciencia & Tecnol, Dept Fis Mat Condensada, Bilbao 48080, Spain

来源：

ADVANCED MATERIALS | 2015年 / 27卷 / 29期

基金：

欧洲研究理事会;

关键词：

columnar nematic mesophases; ferroelectricity; lyotropics; second-harmonic generation; subphthalocyanines; SEMICONDUCTORS; PHASE;

D O I：

10.1002/adma.201500238

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A polar response in a lyotropic columnar nematic material is reported. The material accommodates bowl-shaped molecules with strong axial dipole moments in column segments without head-to-tail invariance. Optical second-harmonic-generation methods confirm that the nematic columns align unidirectionally under an applied electric field and the material develops remnant macroscopic polarization observable for hours. The switching takes place by a flip of the columns. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：4280 / 4284

页数：5

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