Synthesis and electro-optical features of a high T_g polymer system with excellent electro-optic activity and thermal stability

摘要

Three chromophores with tricyanofuran and tricyanopyrroline electron acceptors were synthesized and doped in high glass transition temperature (T _g) polymer poly(N-(4-acetoxylphenyl)maleimide-co-styrene, NAPMI-co-ST). The electro-optic (EO), optical, and thermal properties of the doped poly(NAPMI-co-ST) were characterized and discussed. After being corona poled under 12 kV, this high T _g polymer material showed excellent EO activity and thermal stability. The highest EO coefficient (r ₃₃) reached 48.2 pm V−1 (1,310 nm) and could remain 90 % of the original value for 100 h at 85 °C. The EO coefficient was relatively higher compared with other high T _g EO polymers. The thermal stability was also very good and the manufacture process was convenient and applicable for device fabrication.