Nonlinear optical,poly(amide-imide)-clay nanocomposites comprising an azobenzene moiety synthesised via sequential self-repetitive reaction

摘要

Poly(N-acylurea)-clay nanocomposites consisting of a modified montmorillonite and poly(N-acylurea)were prepared from which poly(amide-imide)-clay nanocomposites were subsequently obtained via the sequential self-repetitive reaction of poly(N-acylurea).The moderate T_g of poly(N-acylurea)allows the nonlinear optically active polymer to exhibit high poling efficiency;in situ poling and curing increased the T_gs of poly(amide-imide)-clay nanocomposites.Electro-optical coefficients,r_(33)of ~ 17-20 pm/V(830 nm),were achieved;high temporal stability(120 °C)and waveguide optical losses of 3.4-3.9 dB/cm at 1310 nm were also obtained for poly(amide-imide)-clay nanocomposites.