用后功能化方法合成含吲哚二阶非线性光学发色团侧基的高分子

A New and Easy Post Functionalization Approach to Synthesize Polymers Containing Indole-based Chromophore Side Groups

用后功能化方法合成了两类连有吲哚二阶非线性光学发色团侧基的高分子.通过核磁、红外、紫外-可见、示差扫描量热分析、分子量测定等手段对所得高分子进行了鉴定。此合成方法简便易行,易于产物的分离提纯,为二阶非线性光学材料的合成提供了一种新方法。

A new synthetic strategy was developed to prepare polymers with indole-based chromophore side chains. Thus, polymers 1 that contain indole groups as side chains was obtained by a direct reaction. And then a post azo coupling of p-nitrobenzenediazonium fluoroborate toward the indole ring in polymers 1 afforded indole-based chromophore-functionalized polymers 2. The polymers were well characterized and exhibited an excellent solubility in common organic solvents. The poled film of polymers 2 reveals a resonant d33 value of 25 pm/V obtained by second harmonic generation (SHG) measurements.