Solvent Manipulation of Liquid Crystal Order and Other Properties in Azo-Containing Surfactomesogen/Poly(styrene sulfonate) Complexes
✍ Scribed by Qian Zhang; C. Geraldine Bazuin
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 629 KB
- Volume
- 211
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Stoichiometric ionically bonded side‐chain polymer complexes of poly(styrene sulfonate) and quaternary ammonium‐functionalised azo‐containing surfactomesogens were exposed to controlled humidity atmosphere, to organic non‐solvents (acetone, THF, ethyl acetate) and to a good solvent (DMF) for the complex. This modifies or increases the packing order, and includes induction of a crystal‐like lamellar structure that is amenable to photoisotropisation. The molecular packing order influences photoinduced birefringence relaxation. Conditions for frozen‐in morphologies are discussed in the light of higher temperature data. The observed diversity of phase changes upon solvent exposure is comparable to what is observed in surfactant–polyelectrolyte complexes.
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