Nonlinear optical side-chain polymers post-functionalized with high-β chromophores exhibiting large electro-optic property
作者:Xianqing Piao、Xianmin Zhang、Yuichi Mori、Masayuki Koishi、Akinari Nakaya、Shinichiro Inoue、Isao Aoki、Akira Otomo、Shiyoshi Yokoyama
DOI:10.1002/pola.24410
日期:2011.1.1
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
通过使用新型的苯基亚乙烯基噻吩亚乙烯基桥(FTC)非线性光学发色团对甲基丙烯酸异氰酸酯聚合物进行后官能化,可以合成电光侧链聚合物。对于此应用,基于FTC的发色团在其电子供体结构中进行了修饰,与基准FTC相比,具有更大的分子超极化能力。在这些新的生色团中,进行了吸收光谱,超瑞利散射实验和热分析,以确认可作为电光侧链聚合物的有效非线性光学单元。在原位过程中研究了所得聚合物的电光系数(r 33)通过监视温度,电流,极化场和电光信号进行极化。与未取代的类似物相比,苯甲氧基修饰的FTC发色团显着实现了更高的非线性光学性能,在1.9μm的4600×10 -30 esu处表现出分子超极化性,在波长1.31μm时的r 33值为150 pm / V。合成的电光聚合物显示出较高的玻璃化转变温度(T g),因此时间稳定性检查显示,在85°C的条件下,经过500个小时,其电光强度保持> 78%。©2010 Wiley