Issue 25, 2008

Holographic recording in thiophene-based polyester

Abstract

The synthesis and optical data storage properties of a side-chain thiophene-phenyl azopolyester ThPhAzoPol is reported. The polyester is derived from diphenyl tetradecanedioate and a thiophene-based liquid crystalline diol which exhibits a short-lived enantiotropic SmA phase (Cryst 177.7 SmA 180.4 I). The polyester ThPhAzoPol exhibits amorphous (Tg, 78.6 °C), crystalline and liquid crystalline character as evidenced by differential scanning calorimetry and thermal polarising microscopy. A grainy texture, which is thermally reversible, with increasing birefringence on cooling from the isotropic melt is observed. The polyester is amenable to optical data storage, showing efficient induced anisotropy, which is stable at room temperature. Polarisation gratings can be inscribed using orthogonally linear and circularly polarised light to good effect (>1%) and surface relief gratings are formed in addition as evidenced by atomic force microscopy.

Graphical abstract: Holographic recording in thiophene-based polyester

Supplementary files

Article information

Article type
Paper
Submitted
22 Apr 2008
Accepted
07 May 2008
First published
21 May 2008

J. Mater. Chem., 2008,18, 3011-3016

Holographic recording in thiophene-based polyester

A. S. Matharu, D. Chambers-Asman, S. Jeeva, S. Hvilsted and P. S. Ramanujam, J. Mater. Chem., 2008, 18, 3011 DOI: 10.1039/B806755D

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