Theoretical and experimental second-harmonic generation studies of rotational response of a dye molecule in a random copolymer of styrene and methyl methacrylate

Carl W. Dirk; S. Devanathan; M. Velez; S. Ghebremichael; Mark G. Kuzyk

doi:10.1117/12.187538

23 September 1994 Theoretical and experimental second-harmonic generation studies of rotational response of a dye molecule in a random copolymer of styrene and methyl methacrylate

Carl W. Dirk, S. Devanathan, M. Velez, S. Ghebremichael, Mark G. Kuzyk

Author Affiliations +

Proceedings Volume 2285, Nonlinear Optical Properties of Organic Materials VII; (1994) https://doi.org/10.1117/12.187538
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

We report on second harmonic generation measurements of a polymer-impeded electric field induced rotation of the dye molecule Disperse Red 1 in a series of styrene-methyl methacrylate copolymers of varying composition. We show by analysis of a generalized hypothetical binomial or multinomial distribution, that the dye molecules are not randomly distributed through the polymer, and apparently associate more strongly with the styrene and methyl methacrylate homopolymer regions. This could also be viewed as evidence of non-random distribution of the two monomers of the copolymer.

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Carl W. Dirk, S. Devanathan, M. Velez, S. Ghebremichael, and Mark G. Kuzyk "Theoretical and experimental second-harmonic generation studies of rotational response of a dye molecule in a random copolymer of styrene and methyl methacrylate", Proc. SPIE 2285, Nonlinear Optical Properties of Organic Materials VII, (23 September 1994); https://doi.org/10.1117/12.187538

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