References
- Fujishiro , K. , Pajerski , A. D. and Lenz , R. W. 1992 . Liq. Crystals , 12 : 417
- Ujiie , S. and Iimura , K. 1989 . Chemistry Lett , : 2217
- Ujiie , S. and Iimura , K. 1990 . Chemistry Lett. , : 1031
- Le Barny , P. and Dubois , J. C. 1989 . Side Chain Liquid Crystal Polymers , Edited by: McArdle , C. B. Blackie and Son Ltd . Cha 5
- Demus , D. and Richter , L. 1978 . Textures of Liquid Crystals , Weinheim : Verlag Chemie . Cha 4
- Noël , C. 1989 . Side Chain Liquid Crystal Polymers , Edited by: McArdle , C. B. Blackie and Son Ltd . Cha 6
- This liquid-crystalline behaviour was probably influenced by the isomer, V'-(S)-6, which was formed by the reaction of the mesogenic alcohol (IV) and the anhydride. The isomer was detected by 13C NMR spectroscopy, but the content of the isomer, V'-(S)-6, in the product was estimated to be very low because of the ratios of the integration values, which were not exactly equal to the contents, corresponding to the following carbon signals in the 13C NMR spectrum (100 MHz, in CDCl3): V-(S)-6: Ch2(3) 36.5 ppm, CH*(2) 73.5 ppm, V'-(S)-6: CH2(3′) 36.7 ppm, CH* (2′) 73.3. The ratios of the integrated values; CH2(3)/CH2(3′) = 99/1, CH*(2)/CH*(2′) = 98/2. In addition, the sharp phase transitions also implied the low content of V'-(S)-6. Therefore, V'-(S)-6 contained in the product presumably did not influence the formation of the smectic phases, though it changed the transition temperatures a little