Issue 42, 2007

Synthesis and optical storage properties of a thiophene-based holographic recording medium

Abstract

The results of the fabrication and optical data storage characteristics of a novel azothiophene polyester 9 for potential holographic storage are reported. The polyester is derived from an azothiophene diol 1 and diphenyl phthalate 8via in vacuo melt transesterification. Inclusion of a 5-methoxy-2-thienyl moiety generates a trans π–π* transition centered close to 405 nm. An investigation of the optical data storage characteristics of a solution cast film of azopolyester with a thickness of 65 µm is summarised. The optical anisotropy induced by a 532 nm frequency doubled YAG laser and probed at a wavelength of 633 nm outside the absorption band with a polarimeter reveals a very high induced anisotropy of 7 rad (laser intensity, 250 mW cm−2). The calculated birefringence of the film is 0.02 per micron. Maximum anisotropy is reached after approximately 70 s of irradiation. The induced anisotropy disappears at approximately 90 °C. Room temperature stable gratings can be inscribed with high diffraction efficiency.

Graphical abstract: Synthesis and optical storage properties of a thiophene-based holographic recording medium

Article information

Article type
Paper
Submitted
13 Apr 2007
Accepted
20 Aug 2007
First published
03 Sep 2007

J. Mater. Chem., 2007,17, 4477-4482

Synthesis and optical storage properties of a thiophene-based holographic recording medium

A. S. Matharu, S. Jeeva, P. R. Huddleston and P. S. Ramanujam, J. Mater. Chem., 2007, 17, 4477 DOI: 10.1039/B705648F

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