Synthesis and nonlinear optical properties of novel polyester containing dicyanovinylnitrocatecholic group
作者:Jung-Eun Kim、Ju-Yeon Lee
DOI:10.1080/15421406.2017.1349996
日期:2017.8.13
ABSTRACT A novel X-type polyester containing 4-(2′,2′-dicyanovinyl)-5-nitrocatecholic groups as nonlinear optical (NLO) chromophores, which constitute part of the polymer backbone, was prepared and characterized. The polyester is soluble in common organic solvents such as N,N-dimethylformamide and acetone. It shows a thermal stability up to 300°C from thermogravimetric analysis with glass-transition
摘要制备并表征了含有 4-(2',2'-二氰基乙烯基)-5-硝基儿茶酚基团作为非线性光学 (NLO) 发色团的新型 X 型聚酯,该发色团构成了聚合物骨架的一部分。聚酯可溶于N,N-二甲基甲酰胺、丙酮等常用有机溶剂。它通过热重分析显示高达 300°C 的热稳定性,差示扫描量热法获得的玻璃化转变温度接近 105°C。极化聚合物薄膜在 1064 nm 基波波长处的二次谐波产生 (SHG) 系数 (d33) 为 5.31 × 10-9 esu。即使在比玻璃化转变温度 (Tg) 高 5°C 时,偶极排列也表现出热稳定性,并且由于聚合物结构的部分主链特征,在 110°C 以下未观察到显着的 SHG 衰减,