To explore novel photoresponsive liquid crystalline polymer actuator, a new difunctional photosensitive nematic liquid
crystalline monomer was synthesized synthesized in high yield (>60% overall), and polymerized via acyclic diene
metathesis polymerization (ADMET) method. Nematic monomer, 4-butoxy-2'-(4-hex-5-enyloxy)-4'-(4-hex-5-
enyloxybenzyloxy)-azobenzene, exhibited crystalline to nematic and nematic to isotropic transitions at 85.6 and 98.3 °C,
respectively. ADMET polymerization of the monomer using Grubbs catalyst (Gen II) was performed to obtain a high
molecular weight polymer. Brown colored free-standing polymer film and fiber were prepared from casting chloroform
solution or from drawing polymer melt, respectively. The polymer film showed nematic liquid crystalline property with
photosensitive phase transition behavior as observed by polarized microscope and differential scanning calorimetry. The
photomechanical deformation of the film and fiber induced by polarized UV irradiation was investigated.
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