Published online by Cambridge University Press: 25 February 2011
Temperature and frequency dependent measurements are utilized to study the relaxation behavior of a photocrosslinking nonlinear optical (NLO) material based on a polyvinylcinnamate (PVCN) polymer matrix. 3-cinnamoyloxy-4-[4-(N, N-diethylamino)-2-cinnamoyloxy phenyl azo] nitrobenzene (CNNB-R) is used as a functionalized NLO active dye. Measurements of dielectric properties of PVCN doped with different levels of CNNB-R have been performed. NLO dye molecules were bonded to the host polymer by ultraviolet irradiation. Measurements were carried out from 50 to 200 °C and a frequency range of 30 Hz to 1 MHz. The effects of dye content and UV irradiation on the dielectric response are discussed.
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