含三苯胺单体的电致变色发光聚合物的合成与性能

Synthesis and properties of emitting electrochromic polymers prepared from triphenylamine monomers

三芳胺(TAA)是一种重要的电致变色材料,其精细结构和取代基对材料性能起重要作用,并且其具有多种颜色变化和给电子性能。基于上述的优异性能,TAA近年来受到了广泛的关注和研究。使用具有空穴传输性能的对溴碘苯合成了两种含三苯胺(TPA)的单体和Suzuki偶联反应将三苯胺单体与含芴基的硼酸酯(9,9-二辛基芴-2,7-双(硼酸频哪醇酯))反应,合成了两种共轭聚合物。这两种聚合物在不同的有机溶剂中均具有良好的溶解性、良好的热稳定性(Td>350℃),以及在0~1.4 V的起始电压下电化学性能稳定,其颜色在外加电压下由淡黄色变为深黄色,最后变为深蓝色。

Triarylamine(TAA)is a significant anodic electrochromic material,which has fine structues with substituents that affect the material properties reveals capacities of various color changes,electron donating and hole transporting.Based on the excellent properties,TAA has received extensive attention and has been researched in recent years.1-bromo-4-iodobenzene was used to synthesize two new monomers containing triphenylamine(TPA).Subsequently,two conjugated polymers were synthesized from 9,9-dioctyfluorene-2,7-bis(boronic acid pinacol ester)and two monomers were synthesized by Suzuki cross coupling reaction.Both polymers showed good solubility in different organic solvents,excellent thermal stability(with Td>350℃)and stable electrochemical performance with the onset voltage at 0~1.4 V.The color changed from pale yellow to deep yellow and finally to deep blue under the voltage added.