Issue 21, 2007
From the journal:

Journal of Materials Chemistry

Liquid crystalline and nonlinear optical properties of bent-shaped compounds derived from 3,4′-biphenylene†

Inmaculada C. Pintre,a   Nélida Gimeno,a   José Luís Serrano,a   M. Blanca Ros,*a   Ibon Alonso,b   César L. Folcia,b   Josu Ortegac  and  Jesús Etxebarriab  

* Corresponding authors

a Instituto de Ciencia de Materiales de Aragón, Química Orgánica, Facultad de Ciencias, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
E-mail: bros@unizar.es

b Departamento de Física de la Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, 48080 Bilbao, Spain

c Departamento de Física Aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco, 48080 Bilbao, Spain

Abstract

The synthesis of different bent-core molecules derived from 3,4′-biphenylene bearing azo, azoxy, imine or ester linkages in their lateral structures is reported. Structure–activity relationships for their liquid crystalline behaviour are discussed. SmCP, USmCP and Colob mesophases are found depending on the type and number of these connecting units. The sequence ester ≈ azoxy > imine > azo can be proposed for the mesophase range, with significant differences observed in terms of mesopahase stabilization. SHG studies on these compounds give nonlinear coefficients in the range of 1–8 pm V−1. The molecular origin for these values is analyzed semi-quantitatively. It was concluded that the SHG performance of bent-core mesogens in general can still be increased substantially. An approach to improve the properties of these materials is briefly outlined.

Graphical abstract: Liquid crystalline and nonlinear optical properties of bent-shaped compounds derived from 3,4′-biphenylene

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/B700636E
Article type
Paper
Submitted
15 Jan 2007
Accepted
14 Feb 2007
First published
08 Mar 2007

J. Mater. Chem., 2007,17, 2219-2227

Permissions

Request permissions

Liquid crystalline and nonlinear optical properties of bent-shaped compounds derived from 3,4′-biphenylene

I. C. Pintre, N. Gimeno, J. L. Serrano, M. B. Ros, I. Alonso, C. L. Folcia, J. Ortega and J. Etxebarria, J. Mater. Chem., 2007, 17, 2219 DOI: 10.1039/B700636E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements