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

    Research output: Contribution to journalArticlepeer-review

    28 Scopus citations


    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 languageEnglish (US)
    Pages (from-to)2741-2744
    Number of pages4
    JournalChemistry of Materials
    Issue number9
    StatePublished - Oct 21 2000

    ASJC Scopus subject areas

    • General Chemistry
    • General Chemical Engineering
    • Materials Chemistry


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