含三苯胺超支化聚合物的合成与性能研究

在以CpCo(CO)2(cp表示环戊二烯基)为催化剂和紫外光照射的条件下,以二-(4-乙炔苯基)-苯胺和1-辛炔为单体合成了新型的含三苯胺超支化聚合物。采用红外光谱、核磁共振谱、热失重分析、紫外吸收光谱、荧光光谱、循环伏安法等方法对聚合物的结构进行表征与性能测试。实验结果表明,聚合物为含三苯胺的超支化聚合物;聚合物都表现出了良好的热稳定性,热失重5%时,分解温度在410℃以上;在光激发的条件下,聚合物在435nm左右处发射蓝色光,荧光量子效率达到75%;聚合物P2的电离势为-5.56eV,有望成为一类很好的空穴传输材料。

Synthesis and Properties of Triphenylamine-Containing Hyperbranched Polymers

New hyperbranched polymers containing triphenylamine were synthesized by polycyclotrimerization of bis(4-ethynylphenyl)phenylamine and 1-octyne with dicarbonyl- cyclopentadienyl-cobalt (CpCo(CO)2) as catalyst under ultraviolet irradiation. The synthesized polymers were characterized and tested by means of IR, NMR, TG, UV, photoluminescence and cyclic voltammetry. The synthesized polymer shows favorable thermal stability and their decomposition temperatures are above 410 ℃ at weight loss of 5%. Under photoexcitation, the polymers can efficiently emit blue light at ～435 nm and fluorescence quantum yields are up to 75%. The ionization potential of the polymer P2 is -5.56 eV,so it may be used as a good hole-transporting material.