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- Title
Functional Photochromic Methylhydrosiloxane-Based Side-Chain Liquid-Crystalline Polymers.
- Authors
Tóth ‐ Katona, Tibor; Cigl, Martin; Fodor ‐ Csorba, Katalin; Hamplová, Věra; Jánossy, István; Kašpar, Miroslav; Vojtylová, Terezia; Hampl, František; Bubnov, Alexej
- Abstract
A new azobenzene-group-containing monomer and several respective functional side-chain polymers grafted on a methylhydrosiloxane backbone (with two different degrees of polymerization; with and without the addition of a photoreactive benzophenone derivative) are designed, synthesized, and characterized. The resulting materials clearly show self-assembly behavior and possess a nematic liquid-crystal phase over a broad temperature range, which extends below 0 °C. The optical properties of these new photochromic liquid-crystalline materials are determined from the absorbance spectra of oriented samples and by photoinduced birefringence studies. The results indicate a considerable dichroism of the side-chain liquid-crystalline polymers (SCLCPs), and hence demonstrate their potential applicability for optical storage.
- Subjects
POLYMERS; SILICONES; SILOXANES; MOLECULAR self-assembly; MACROMOLECULES
- Publication
Macromolecular Chemistry & Physics, 2014, Vol 215, Issue 8, p742
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201300729