# Effect of lamellar nanostructures on the second harmonic generation of polymethylmethacrylate films doped with 4-(4-nitrophenylazo)aniline chromophores

Source: [Effect of lamellar nanostructures on the second harmonic generation of polymethylmethacrylate films doped with 4-(4-nitrophenylazo)aniline chromophores](<https://www.sota2.com/research/paper/68fa2ae51e209131ce8417a7>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T13:50:04.728Z

Authors: Alfredo Franco, Laura Romero-Miranda, Guadalupe Valverde-Aguilar, Jorge Garc\\'ia-Macedo, Giovanna Brusatin, Massimo Guglielmi (2) \_\_INSTITUTION\_6\_\_ Departamento de Estado S\\'olido, Instituto de F\\'isica, Universidad Nacional Aut\\'onoma de M\\'exico, M\\'exico, D.F., (2) Dipartimento di Ingegneria Meccanica, Settore Materiali, Universit\\\`a di Padova, Padova, Italy)

Published: 2011-11-19T04:10:22.000Z

## Abstract

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.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1111.4531>)

[PDF](<https://arxiv.org/pdf/1111.4531.pdf>)