We report on the successful fabrication ofXhyphen;deposited multilayer films using the Langmuirndash;Schaefer technique incorporating nonlinear optical chromophores. This technique was used on films of a polysiloxane copolymer containing both a mesogenic and a nonlinear optical side chain. Both xhyphen;ray and nonlinear optical studies of monohyphen; and multilayer films reveal the headhyphen;tohyphen;tail deposition characteristic ofXdeposition. Both studies also indicate a highly polar noncentrosymmetric structure with nearly perpendicular orientation of the chromophore with respect to the film plane. The nonlinear optical studies also indicate a more tilted structure for the first layer and a secondhyphen;harmonic coefficient ofdperp;perp;=5.3plusmn;0.5times;10minus;9esu.
展开▼
