Non-linear optical properties of polymers bearing pendent phosphine oxide chromophores

Polymethacrylates and polyurethanes containing covalently bound organophosphorus NLO chromophores have been synthesized and characterized. These polymers contain a high concentration of NLO chromophores. Film samples obtained by spin coating and poled by the corona method show large second harmonic coefficients (ifd33 =70 to 135 pm V−1) measured at 1064 run. The bulky size and the local polarity of the diphenylphosphoryl acceptor group contribute to the high glass transition temperature (ifTg = 120 to 163 °C) and to the good temporal stability of these materials.