Synthesis and mesomorphic properties of some ferroelectric liquid crystals of lactate
β Scribed by Heng-Feng Li; Yong-Gang Yang; Jian-Xun Wen
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 638 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0256-7660
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π SIMILAR VOLUMES
Five novel tetrafluorinated biphenyl acetylene molecules containing two chiral centres in the side chain were synthesized. The mesomorphic behaviour of these compounds was characterized by differiential scanning calorimetry (DSC) and optical polarizing microscopy. All these compounds exhibit cholest
The nonequivalence of the two halves of the dimer caused by the chiral center becomes apparent only at -20 "C in the 'H NMR spectrum: at this temperature the t w o nonequivalent Haatoms give rise to two very close but distinct singlets. Modified complexes of type 4 have been measured. and frequency