Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups

A. K. Li; S. S. Yang; W. Y. Jean; C. S. Hsu; B. R. Hsieh

doi:10.1021/cm000295f

Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups

A. K. Li, S. S. Yang, W. Y. Jean, C. S. Hsu, B. R. Hsieh

Chemistry and Physics

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Abstract

Poly(2,3-diphenylphenylene vinylene) (DP-PPV) derivatives with pendant mesogene groups were synthesized. A biphenyoxyl or cyclohexylphenoxy moiety serves as the rigid mesogen core, a methylene chain as the spacer, and a alkyl or alkoxy group as the flexible terminal group. The optical properties of the polymers were investigated by UV-vis and photoluminescent spectroscopies. The polymer films emitted green-blue photoluminescence and electroluminescence. The phase transition behaviors of the polymers were characterized by a polarized optical microscope and a differential scanning calorimeter. The monomers did not show mesophases, while the polymers exhibited a nematic phase around 170-190 °C. The aligned films exhibited dichroism in absorption and emission spectra, implying that the polymers have potential for linearly polarized LED application.

Original language	English (US)
Pages (from-to)	2741-2744
Number of pages	4
Journal	Chemistry of Materials
Volume	12
Issue number	9
DOIs	https://doi.org/10.1021/cm000295f
State	Published - Oct 21 2000

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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10.1021/cm000295f

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title = "Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups",

abstract = "Poly(2,3-diphenylphenylene vinylene) (DP-PPV) derivatives with pendant mesogene groups were synthesized. A biphenyoxyl or cyclohexylphenoxy moiety serves as the rigid mesogen core, a methylene chain as the spacer, and a alkyl or alkoxy group as the flexible terminal group. The optical properties of the polymers were investigated by UV-vis and photoluminescent spectroscopies. The polymer films emitted green-blue photoluminescence and electroluminescence. The phase transition behaviors of the polymers were characterized by a polarized optical microscope and a differential scanning calorimeter. The monomers did not show mesophases, while the polymers exhibited a nematic phase around 170-190 °C. The aligned films exhibited dichroism in absorption and emission spectra, implying that the polymers have potential for linearly polarized LED application.",

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T1 - Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups

AU - Li, A. K.

AU - Yang, S. S.

AU - Jean, W. Y.

AU - Hsu, C. S.

AU - Hsieh, B. R.

PY - 2000/10/21

Y1 - 2000/10/21

N2 - Poly(2,3-diphenylphenylene vinylene) (DP-PPV) derivatives with pendant mesogene groups were synthesized. A biphenyoxyl or cyclohexylphenoxy moiety serves as the rigid mesogen core, a methylene chain as the spacer, and a alkyl or alkoxy group as the flexible terminal group. The optical properties of the polymers were investigated by UV-vis and photoluminescent spectroscopies. The polymer films emitted green-blue photoluminescence and electroluminescence. The phase transition behaviors of the polymers were characterized by a polarized optical microscope and a differential scanning calorimeter. The monomers did not show mesophases, while the polymers exhibited a nematic phase around 170-190 °C. The aligned films exhibited dichroism in absorption and emission spectra, implying that the polymers have potential for linearly polarized LED application.

AB - Poly(2,3-diphenylphenylene vinylene) (DP-PPV) derivatives with pendant mesogene groups were synthesized. A biphenyoxyl or cyclohexylphenoxy moiety serves as the rigid mesogen core, a methylene chain as the spacer, and a alkyl or alkoxy group as the flexible terminal group. The optical properties of the polymers were investigated by UV-vis and photoluminescent spectroscopies. The polymer films emitted green-blue photoluminescence and electroluminescence. The phase transition behaviors of the polymers were characterized by a polarized optical microscope and a differential scanning calorimeter. The monomers did not show mesophases, while the polymers exhibited a nematic phase around 170-190 °C. The aligned films exhibited dichroism in absorption and emission spectra, implying that the polymers have potential for linearly polarized LED application.

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Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups

Abstract

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