Highly thermal and photostable nonlinear optical polymers were obtained by covalently incorporating the tricyanovinylidenediphenylaminobenzene (TCVDPA) chromophore to a polycarbonate backbone. NLO polycarbonates with different chromophore attachment modes and flexibilities were synthesized. In spite of the high loading levels (ranging from 33.1 to 39.8 wt%), the polymers exhibit Tgs as high as 215 °C, representing a significant improvement of over 100 °C of the material Tg compared with that of the guest–host system containing the same chromophore at similar high loadings. EO coefficients up to 33 pm V−1 at 830 nm were achieved, and a good temporal stability of the dipole alignment at 50 °C was observed.
通过将三
氰基
乙烯基二苯胺苯(TCVDPA)发色团共价结合到聚
碳酸酯骨架上,获得了高热稳定性和光稳定性的非线性光学聚合物。合成了具有不同发色团附着模式和柔性的 NLO 聚
碳酸酯。尽管负载
水平较高(从 33.1 wt% 到 39.8 wt%),但聚合物的 Tg 仍高达 215 °C,与含有相同发色团的客体-主体系相比,在类似的高负载条件下,材料的 Tg 显著提高了 100 °C。在 830 纳米波长下的
环氧乙烷系数高达 33 pm V-1,并且在 50 °C 下观察到偶极排列具有良好的时间稳定性。