Orientation of a photo-sensitive polymeric monolayer studied by second-harmonic generation

B. Park; H. S. Kim; J. Y. Bae; J. G. Lee; H. S. Woo; S. H. Han; J. W. Wu; M. Kakimoto; H. Takezoe

doi:10.1007/s003400050417

Orientation of a photo-sensitive polymeric monolayer studied by second-harmonic generation

B. Park, H. S. Kim, J. Y. Bae, J. G. Lee, H. S. Woo, S. H. Han, J. W. Wu, M. Kakimoto, H. Takezoe

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We determine the orientational distribution functions of azo-side-chain polymeric monolayers before and after the photo-irradiation by optical surface second-harmonic generation (SHG). The polymeric monolayer, composed of azo-dye-labeled polyamic acid (long alkyl) amine salt, is prepared by the Langmuir-Blodgett technique. Oblique incident surface SHG measurement from the monolayer provides the nonlinear-optical tensor components related to the orientational distribution functions of the azo-side-chain. The analysis of experimental results shows that the point symmetry of the azo-pendent unit in the monolayer changes from C_∞ν to C_1ν by the photo-isomerization process, with the azobenzene conformation retained as trans-isomer.

Original language	English
Pages (from-to)	445-451
Number of pages	7
Journal	Applied Physics B: Lasers and Optics
Volume	66
Issue number	4
DOIs	https://doi.org/10.1007/s003400050417
State	Published - 1998

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title = "Orientation of a photo-sensitive polymeric monolayer studied by second-harmonic generation",

abstract = "We determine the orientational distribution functions of azo-side-chain polymeric monolayers before and after the photo-irradiation by optical surface second-harmonic generation (SHG). The polymeric monolayer, composed of azo-dye-labeled polyamic acid (long alkyl) amine salt, is prepared by the Langmuir-Blodgett technique. Oblique incident surface SHG measurement from the monolayer provides the nonlinear-optical tensor components related to the orientational distribution functions of the azo-side-chain. The analysis of experimental results shows that the point symmetry of the azo-pendent unit in the monolayer changes from C∞ν to C1ν by the photo-isomerization process, with the azobenzene conformation retained as trans-isomer.",

author = "B. Park and Kim, {H. S.} and Bae, {J. Y.} and Lee, {J. G.} and Woo, {H. S.} and Han, {S. H.} and Wu, {J. W.} and M. Kakimoto and H. Takezoe",

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language = "English",

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journal = "Applied Physics B: Lasers and Optics",

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T1 - Orientation of a photo-sensitive polymeric monolayer studied by second-harmonic generation

AU - Park, B.

AU - Kim, H. S.

AU - Bae, J. Y.

AU - Lee, J. G.

AU - Woo, H. S.

AU - Han, S. H.

AU - Wu, J. W.

AU - Kakimoto, M.

AU - Takezoe, H.

PY - 1998

Y1 - 1998

N2 - We determine the orientational distribution functions of azo-side-chain polymeric monolayers before and after the photo-irradiation by optical surface second-harmonic generation (SHG). The polymeric monolayer, composed of azo-dye-labeled polyamic acid (long alkyl) amine salt, is prepared by the Langmuir-Blodgett technique. Oblique incident surface SHG measurement from the monolayer provides the nonlinear-optical tensor components related to the orientational distribution functions of the azo-side-chain. The analysis of experimental results shows that the point symmetry of the azo-pendent unit in the monolayer changes from C∞ν to C1ν by the photo-isomerization process, with the azobenzene conformation retained as trans-isomer.

AB - We determine the orientational distribution functions of azo-side-chain polymeric monolayers before and after the photo-irradiation by optical surface second-harmonic generation (SHG). The polymeric monolayer, composed of azo-dye-labeled polyamic acid (long alkyl) amine salt, is prepared by the Langmuir-Blodgett technique. Oblique incident surface SHG measurement from the monolayer provides the nonlinear-optical tensor components related to the orientational distribution functions of the azo-side-chain. The analysis of experimental results shows that the point symmetry of the azo-pendent unit in the monolayer changes from C∞ν to C1ν by the photo-isomerization process, with the azobenzene conformation retained as trans-isomer.

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SN - 0946-2171

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EP - 451

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

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ER -

Orientation of a photo-sensitive polymeric monolayer studied by second-harmonic generation

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