  The kinetics of the orientation of Disperse Orange 3 molecules embedded in
amorphous and nanostructured Polymethylmethacrylate films was studied under the
effect of an intense electrostatic poling field. Non-centrosymmetric
chromophore distributions were obtained in Polymethylmethacrylate films by
Corona poling technique. These distributions depends on the Corona poling time.
The changes in the orientation of the Disperse Orange 3 molecules were followed
by in-situ transmitted Second Harmonic Generation measurements. The Second
Harmonic Generation signal was recorded as function of time at several
temperatures; it was fitted as function of the Corona poling time, considering
matrix-chromophore interactions. The Polymethylmethacrylate films were
nanostructured by the incorporation of an anionic surfactant, the Sodium
Dodecyl Sulfate. The lamellar nanostructures in the films were identified by
X-ray diffraction measurements.
