Journal
LIQUID CRYSTALS
Volume 44, Issue 4, Pages 729-737Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2016.1236419
Keywords
Hockey-stick liquid crystals; azobenzene; nematic phases; SmC phases
Funding
- Deutsche Forschungsgemeinschaft [Ts 39/24-1]
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New five-ring hockey-stick liquid crystalline materials with 4-bromoresorcinol as the central core unit and an azobenzene-based side arm were synthesised and their mesophase behaviour was investigated by polarising optical microscopy, differential scanning calorimetry, X-ray diffraction and under a triangular wave electric field. Additional structural modification was done by introducing a lateral fluorine atom in the terminal ring of one of the side arms. It is found that regardless of the alkyl chain length or the lateral fluorine substitution, all of the prepared materials are liquid crystalline exhibiting nematic phases composed of cybotactic clusters of the SmC-type (N-CybC) in addition to a monotropic SmC phase for the longest homologue. [GRAPHICS] .
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