Facile synthesis of linear and hyperbranched ladder poly(p-phenylene)s without structural defects.
Facile synthesis of linear and hyperbranched ladder poly(p-phenylene)s without structural defects.
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DOI：
10.1002/marc.201200376
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发表时间：
2012-10
影响因子：
4.6
通讯作者：
L. Bai;Dongzhi Li;Huan-Huan Lu-Huan;Yonggang Wu;X. Ba;Zhishan Bo
中科院分区：
文献类型：
--
作者：
L. Bai;Dongzhi Li;Huan-Huan Lu-Huan;Yonggang Wu;X. Ba;Zhishan Bo
通过Pd（0）催化的Suzuki缩聚反应和Friedel-Crafts烷基化反应，可以方便地合成线性和超支化梯形聚合物。该聚合物显示出具有梯形聚合物的典型特征的蓝光发射，例如良好分辨的吸收和发射光谱，以及小的斯托克斯位移。聚合物含有较少的结构缺陷，并且它们表现出良好的光学和热稳定性。梯形聚合物薄膜在110 ° C空气中加热24 h后，没有观察到光谱变化。
Linear and hyperbranched ladder polymers are facilely synthesized by a Pd(0) -catalyzed Suzuki polycondensation and Friedel-Crafts alkylation. The polymers show blue light emission with typical features of ladder polymers, such as well-resolved absorption and emission spectra, and small Stokes shifts. The polymers contain fewer structural defects and they exhibit good optical and thermal stability. No spectral change is observed after the films of ladder polymers are heated at 110 °C in air for 24 h.