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1. Liquid-crystalline side-group polyesters with definite lengths of the main-chain spacers

Author

Boehme, A., Lindau, J., Rötz, U., Hoffmann, F., Fischer, H.R., Diele, S., and Kuschel, F.

Abstract

New liq.-cryst. polyesters with 4-(phenylazo)azobenzene moieties as mesogenic side groups and a polyester backbone structure characterized by a systematic variation of the length of the flexible non-mesogenic main-chain segments were synthesized. The polyesters were investigated by DSC, polarizing microscopy, miscibility studies, and x-ray diffraction. With increasing no. of methylene groups in the backbone spacer, the thermal stability of the nematic and/or smectic phases first decreased and then increased. [on SciFinder (R)]

Published
1992

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