Nonlinear optical side-chain polymers post-functionalized with high-β chromophores exhibiting large electro-optic property

Xianqing Piao, Xianmin Zhang, Yuichi Mori, Masayuki Koishi, Akinari Nakaya, Shinichiro Inoue, Isao Aoki, Akira Otomo, Shiyoshi Yokoyama

    Research output: Contribution to journalArticlepeer-review

    65 Citations (Scopus)

    Abstract

    Electro-optic side-chain polymers have been synthesized by the post-functionalization of methacrylate isocyanate polymers with novel phenyl vinylene thiophene vinylene bridge (FTC) nonlinear optical chromophores. For this application, FTC-based chromophores were modified in their electronic donor structure, exhibiting much larger molecular hyperpolarizabilities compared with the benchmark FTC. Of these new chromophores, absorption spectra, hyper-Rayleigh scattering experiment, and thermal analysis were carried out to confirm availability as effective nonlinear optical units for electro-optic side-chain polymers. The electro-optic coefficients (r33) of obtained polymers were investigated in the process of in situ poling by monitoring the temperature, current flow, poling field, and electro-optic signal. Compared with the nonsubstituted analogue, benxyloxy modified FTC chromophore significantly achieved higher nonlinear optical property, exhibiting molecular hyperpolarizability at 1.9 μm of 4600 × 10-30 esu and an r33 value of 150 pm/V at the wavelength of 1.31 μm. Synthesized electro-optic polymers showed high glass transition temperature (Tg), so that the temporal stability examination exhibited >78% of the electro-optic intensity remaining at 85 °C over 500 h.

    Original languageEnglish
    Pages (from-to)47-54
    Number of pages8
    JournalJournal of Polymer Science, Part A: Polymer Chemistry
    Volume49
    Issue number1
    DOIs
    Publication statusPublished - 2011 Jan 1

    Keywords

    • NLO
    • electro-optic coefficient
    • electro-optic polymer
    • functionalization of polymer
    • molecular hyperpolarizability
    • poling
    • side-chain polymer
    • thermal properties

    ASJC Scopus subject areas

    • Polymers and Plastics
    • Organic Chemistry
    • Materials Chemistry

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