Taking advantage of the multifunctional characteristics of carbazole along with rational molecular design, several two-dimensional carbazole chromophores were acquired. Doping the chromophores into poly(ether imide), a series of NLO-active guest-host polymers were obtained. The compatibility between chromophores and poly(ether imide) was investigated by SEM and extraction experiment. After poling, these NLO poly(ether imide)s with large second-order nonlinearities were achieved. Correlation between structure and nonlinear optical characteristics, and the chromophore size effect on the thermal and temporal stability have been probed. Large rotational cone volumes make the two-dimensional chromophores possessing excellent orientational stability at 60.
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Kuo, WJ., Hsiue, GH. & Jeng, RJ. Novel Guest-Host NLO Polyimide Based on Two-Dimensional Carbazole Chromophores. MRS Online Proceedings Library 665, 526 (2000). https://doi.org/10.1557/PROC-665-C5.26