Photoluminescent, liquid-crystalline, and electrochemical properties of <i>para</i>
-phenylene-based alternating conjugated copolymers
作者:Kai Yao、Yiwang Chen、Lie Chen、Huanling Kong、Weihua Zhou、Fan Li、Xiaohui He、Yen Wei
DOI:10.1002/pola.23803
日期:2010.1.15
and luminescent properties has been investigated by Fourier transform infrared spectroscopy, thermogravimetry, differential scanning calorimetry, polarized optical microscopy, ultraviolet–visible spectroscopy, photoluminescence (PL), and cyclic voltammetry. These polymers show highly thermal stability, losing little of their weights when heated to 360 °C. The conjugated copolymers exhibit liquid crystallinity
新型液晶交替共轭共聚物[ P(P(6)CN- alt- Cz)和P(P(6)CN- alt- MeP)]通过钯催化的Suzuki偶联反应合成了带有亚苯基和咔唑或在主链上被甲基取代的亚苯基。通过傅里叶变换红外光谱,热重分析,差示扫描量热,偏振光学显微镜,紫外可见光谱,光致发光( PL)和循环伏安法。这些聚合物显示出很高的热稳定性,加热到360°C时,几乎没有重量损失。共轭共聚物在高温下表现出液晶性。发色三联苯核的存在赋予共聚物高PL和聚合物含咔唑单元的P(P(6)CN- alt- Cz可以发出更纯的蓝光。所有带隙约为2.3-2.4 eV的低共聚膜均经历可逆的氧化和还原过程,远低于聚(对-亚苯基)。©2009 Wiley Periodicals,Inc. J Polym Sci A部分:Polym Chem 48:434–442,2010