Fourier Transform Infrared Spectroscopic Studies on Alternate-Layer Langmuir-Blodgett Films with Nonlinear Optical Properties

Y. P. Song; J. Yarwood; J. Tsibouklis; W. J. Feast; J. Cresswell; M. C. Petty

doi:10.1021/la00037a049

Fourier Transform Infrared Spectroscopic Studies on Alternate-Layer Langmuir-Blodgett Films with Nonlinear Optical Properties

Y. P. Song, J. Yarwood, J. Tsibouklis, W. J. Feast, J. Cresswell, M. C. Petty

Institute of Life Sciences and Healthcare

Durham University

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

Abstract

The nature and extent of molecular “ordering” in alternate-layer Langmuir-Blodgett films of 4-n-heptadecylamido- 4′-nitrostilbene/stearic acid and a functionalized diarylalkyne (JT11) have been elucidated using infrared linear dichroism. Comparison of intensity ratios of certain infrared bands in the attenuated total reflection and the reflection-absorption spectra has been used to determine the details of the molecular geometrical arrangement from the resulting directions of the selected transition moments. This information, along with spectra of hydrogen-bonded stilbene and stearic acid C=O groups, leads to a predicted “structure” which is consistent with the observation of a rather modest nonlinear optical coefficient. This should lead to an improved design strategy for the successful production of organic nonlinear optical devices.

Original language	English
Pages (from-to)	262-266
Number of pages	5
Journal	Langmuir
Volume	8
Issue number	1
DOIs	https://doi.org/10.1021/la00037a049
Publication status	Published - 1 Jan 1992

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title = "Fourier Transform Infrared Spectroscopic Studies on Alternate-Layer Langmuir-Blodgett Films with Nonlinear Optical Properties",

abstract = "The nature and extent of molecular “ordering” in alternate-layer Langmuir-Blodgett films of 4-n-heptadecylamido- 4′-nitrostilbene/stearic acid and a functionalized diarylalkyne (JT11) have been elucidated using infrared linear dichroism. Comparison of intensity ratios of certain infrared bands in the attenuated total reflection and the reflection-absorption spectra has been used to determine the details of the molecular geometrical arrangement from the resulting directions of the selected transition moments. This information, along with spectra of hydrogen-bonded stilbene and stearic acid C=O groups, leads to a predicted “structure” which is consistent with the observation of a rather modest nonlinear optical coefficient. This should lead to an improved design strategy for the successful production of organic nonlinear optical devices.",

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T1 - Fourier Transform Infrared Spectroscopic Studies on Alternate-Layer Langmuir-Blodgett Films with Nonlinear Optical Properties

AU - Song, Y. P.

AU - Yarwood, J.

AU - Tsibouklis, J.

AU - Feast, W. J.

AU - Cresswell, J.

AU - Petty, M. C.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - The nature and extent of molecular “ordering” in alternate-layer Langmuir-Blodgett films of 4-n-heptadecylamido- 4′-nitrostilbene/stearic acid and a functionalized diarylalkyne (JT11) have been elucidated using infrared linear dichroism. Comparison of intensity ratios of certain infrared bands in the attenuated total reflection and the reflection-absorption spectra has been used to determine the details of the molecular geometrical arrangement from the resulting directions of the selected transition moments. This information, along with spectra of hydrogen-bonded stilbene and stearic acid C=O groups, leads to a predicted “structure” which is consistent with the observation of a rather modest nonlinear optical coefficient. This should lead to an improved design strategy for the successful production of organic nonlinear optical devices.

AB - The nature and extent of molecular “ordering” in alternate-layer Langmuir-Blodgett films of 4-n-heptadecylamido- 4′-nitrostilbene/stearic acid and a functionalized diarylalkyne (JT11) have been elucidated using infrared linear dichroism. Comparison of intensity ratios of certain infrared bands in the attenuated total reflection and the reflection-absorption spectra has been used to determine the details of the molecular geometrical arrangement from the resulting directions of the selected transition moments. This information, along with spectra of hydrogen-bonded stilbene and stearic acid C=O groups, leads to a predicted “structure” which is consistent with the observation of a rather modest nonlinear optical coefficient. This should lead to an improved design strategy for the successful production of organic nonlinear optical devices.

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Fourier Transform Infrared Spectroscopic Studies on Alternate-Layer Langmuir-Blodgett Films with Nonlinear Optical Properties

Abstract

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