Abstract
This paper reports a new nonlinear optical (NLO) poly(phthalazinone ether ketone) P1 with a high molar density (80%) of chromophore. It has been synthesized by Heck reaction between a brominated poly(phthalazinone ether ketone) P and the NLO chromophore 4. P1 exhibited excellent thermal properties and good solubility due to the presence of the kinked non-planar moiety, phenyl phthalazinone, along the polymer backbones. DSC indicated that the glass transition temperature ( T g) of P1 was 188 °C, and TGA indicated that P1 was thermally stable up to 290 °C in both air and argon. The structures of P and P1 were characterized, and the poled films of P1 revealed a second-order nonlinear optical coefficient ( d 33) value of 16.9 pm/V by in situ second harmonic generation measurements at 1064 nm fundamental wavelength.
Published Version
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