NONLINEAR-OPTICAL PROPERTIES OF POLYMERS BEARING PENDENT PHOSPHINE OXIDE CHROMOPHORES

Polymethacrylates and polyurethanes containing covalently bound organo phosphorus NLO chromophores have been synthesized and characterized. T hese polymers contain a high concentration of NLO chromophores. Film s amples obtained by spin coating and poled by the corona method show la rge second harmonic coefficients (d(33) = 70 to 135 pm V-1) measured a t 1064 nm. The bulky size and the local polarity of the diphenylphosph oryl acceptor group contribute to the high glass transition temperatur e (T-g = 120 to 163 degrees C) and to the good temporal stability of t hese materials.