Liquid crystalline side group polymers with fluorine-containing azo-chromophores

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Abstract
A series of side group liquid crystalline polymethacrylates with 4′-trifluoromethoxyazobenzene mesogenic side groups was characterized by differential scanning calorimetry, polarizing microscopy and X-ray diffraction methods depending on the spacer length. The phase behaviour was compared with literature data for analogous non-fluorinated compounds. An unusual phase polymorphism N-SAd-I was observed for the polymers with spacer length n = 5 and 6.