Abstract
Crosslinkable polymer with host–guest and side chain system was investigated to increase the content of NLO chromophores in second order nonlinear optics. Though very low poling temperature has been applied, the observed UV absorption difference before and after poling was large due to low glass transition temperature of the polymer and high content of chromophores introduced by side chain and guest molecules. Highly stable NLO properties have been achieved through crosslinked polymer matrices. The crosslink reaction between polymer matrix and chromophore was confirmed by FT-IR and 29Si solid state NMR. The d 33 values of modified DR1/polymer films are high, around 40 pm/V, and there is a no change during 2 months at ambient temperature though for some samples d 33 values slightly decreased.
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