An optically active monomer containing azobenzene moieties with chiral group (s-2-methyl-butyl)
4-[2-(methacryloyloxy)ethyloxy]-4'-(s-2-methyl-1-butyloxycarbonyl) azobenzene(Ml) was synthesized. Polymer (PMl)possessing optical phase conjugated response was obtained by homopolymerzation of the optically active monomer (Ml)using free radical polymerization. The polymer was very soluble in common solvents and good optical quality films could beeasily fabricated by spin coating. The optical phase conjugated responses of the polymer PMI were measured by degenerate four-wave mixing (DFWM).In comparison with polymer containing no chiral group
it was found from the preliminary measurement of photoisomeric change that optical phase conjugated response of the PMI in the long-range order hexagonal symmetry microstructure could be easily controlled by choosing the appropriate polarization direction of the irradiating beams(514.5nm) and the irradiating number
presumably due to the chiral group in the PMI molecular structure.For the case of the polymer investigated here
a chiral group side chain was introduced to increase optical phase conjugated response intensity with different polarization directions of the irradiating beams
which aims originally at searching for a new photoactive material.
Abstract
An optically active monomer containing azobenzene moieties with chiral group (s-2-methyl-butyl)
4-[2-(methacryloyloxy)ethyloxy]-4'-(s-2-methyl-1-butyloxycarbonyl) azobenzene(Ml) was synthesized. Polymer (PMl)possessing optical phase conjugated response was obtained by homopolymerzation of the optically active monomer (Ml)using free radical polymerization. The polymer was very soluble in common solvents and good optical quality films could beeasily fabricated by spin coating. The optical phase conjugated responses of the polymer PMI were measured by degenerate four-wave mixing (DFWM).In comparison with polymer containing no chiral group
it was found from the preliminary measurement of photoisomeric change that optical phase conjugated response of the PMI in the long-range order hexagonal symmetry microstructure could be easily controlled by choosing the appropriate polarization direction of the irradiating beams(514.5nm) and the irradiating number
presumably due to the chiral group in the PMI molecular structure.For the case of the polymer investigated here
a chiral group side chain was introduced to increase optical phase conjugated response intensity with different polarization directions of the irradiating beams
which aims originally at searching for a new photoactive material.
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