Ferroelectric liquid crystalline polysiloxanes containing a naphthalene moiety
โ Scribed by Coimbatore R. Gopalakrishnan; Bukkinakere K. Sadashiva
- Book ID
- 102661998
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 551 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1022-1336
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โฆ Synopsis
The synthesis and thermal properties of side-chain liquid-crystalline polysiloxanes containing a naphthalene moiety are described. The hydrosilylation of the monomers (o-alkenenaphthoic acid derivatives) with poly(hydrogenmethylsi1oxane) resulted in the desired ferroelectric polymers. Two series of polymers were prepared using two slightly different core unit structures. Preliminary results of optical polarising microscopy and differential scanning calorimetric investigations are reported. The polymers show smectic A and chiral smectic C phases.
๐ SIMILAR VOLUMES
## Abstract The influences of mesogenic group chemical structures on dielectric relaxation behavior were investigated for ferroelectric side chain liquid crystalline polymers (FLCPs). The relaxation time and activation energies of the Goldstone mode, ฮฑโ, and ฮฒโrelaxations decrease with increasing s
## Abstract Ferroelectric liquid crystalline (FLC) copolysiloxanes containing suitable comonomers (โNLOโchromophoresโ) for second harmonic generation (SHG) have been prepared. Their important feature is a donorโacceptor ฯโsystem sited perpendicular to the long axis of the sideโgroup moieties in ord