Polymers Composed of Alternating Anthracene and Pyridine Containing Units by Radical Ring-Opening Polymerization: Controlled Synthesis, Optical Properties, and Metal Complexes
作者:Kazuhiro Nakabayashi、Shota Inoue、Yohei Abiko、Hideharu Mori
DOI:10.1021/ma400525m
日期:2013.6.25
obtained polymers exhibited fluorescence due to the formation of excimers. The formation of complexes between the anthracene-containing polymers and metal species (Zn, Cu, and Co) led to the change in the optical properties compared to those of pristine polymers. These results demonstrate that the unique optical properties could be developed under various conditions due to the interactions between the anthracene
通过可逆的加成-断裂链转移(RAFT)过程,对含吡啶的环状单体进行自由基开环聚合反应,合成了由交替的蒽和含吡啶单元组成的新型聚合物。开环聚合反应主要进行,得到定义明确的聚合物(M w / M n〜1.30),由于蒽单元而具有特征吸收和荧光。另一方面,在氯仿和酸性水溶液中观察到荧光猝灭。通过从激发的蒽单元到配位或质子化吡啶单元的电荷转移来解释猝灭。另外,通过季铵化进行了独立于外部环境条件的荧光猝灭。在薄膜状态下,由于形成了受激准分子,所获得的聚合物显示出荧光。与原始聚合物相比,含蒽的聚合物与金属物质(Zn,Cu和Co)之间形成络合物导致光学性质发生变化。