含扭曲并苯结构的线性聚合物的合成及光电性能

Synthesis and Optoelectronic Properties of Linear Polymers Containing Twistacene

将扭曲并苯分子单元引入到聚合物中能够有效减弱聚合物固相下的聚集,为发展高荧光的有机显示材料提供新的思路。为此,通过经典Suzuki偶联反应,合成了4种新型的含有扭曲并苯分子的线性聚合物（P1-P4）。在四氢呋喃溶剂中或固体薄膜下,聚合物在302-417 nm处有2个宽的吸收峰,峰形状类似,发出蓝色荧光,且薄膜的发射波长红移。4种聚合物重量损失为5%时的温度都高于350℃,表明都具有良好的热稳定性。通过循环伏安法研究了聚合物的电化学性质。

The introduction of twistacene unit into polymers can decrease the fluorescence quenching in the solid state,which provides more room to approach the electroluminescent materials. Four novel linear twistacenefunctionalized polymers P1 ~ P4 are synthesized through classical Suzuki coupling reaction. In THF solution or as thin film,all of them show similar absorption profiles and have two broad absorption peaks between 302 nm and 417 nm.In comparison,the emission bands were red-shift in thin film and emit strong blue light. TGA analysis suggested that P1 ~ P4 were stable up to 350℃. In addition,their electrochemical behaviors were further tested using CV method.