二茂鐵為核心之雙三苯基胺衍生物的合成、電化學研究及在有機電激發光元件的應用

Abstract

摘 要 在本論文中，我們藉由不同的策略合成出一系列以二茂鐵為核心之雙三苯基胺化合物，利用電化學的方法及光譜電化學來觀察其特質，並製作成元件。 首先，我們使用不同的連接基團而分成二個系統來加以探討(1)以OXD環為連接基團。(2)以C=C雙鍵為連接基團。藉由此二系統的電化學性質而對此類化合物應用於電洞傳導層，會有更深入的了解。 同時，我們也發現，化合物若以OXD環為連接基團，不但可以阻隔二茂鐵單元和三苯基胺單元的偶合作用，使得分子可以利用電化學的方法形成電聚膜。更可以利用其拉電子能力所引起的共振效應而提升二茂鐵單元的氧化電位。當我們將分子內不同的氧化單元控制一致時，此電聚膜具有良好的電洞傳導效率並製作出高性能的發光元件，其最大亮度為27700 cd/m2，效率高達14.3 cd/A，和PEDOT相比並不遜色。

Abstract In this thesis, we synthesized a series of ferrocene-based triphenyl amine compounds via different approaches. By using electrochemical method and spectral electrochemistry we could observe their properties and then make into devices. First, the research was divided into two sections: (1) Using OXD as the connecting group. (2) Using C=C as the connecting group. We have further composed PLED devices about applying electropolymerization of these kinds of compounds as hole transporting layer on ITO glass. In the meanwhile, we also found that compounds being connected by OXD rings, electronic coupling between the ferrocene and triphenyl amine could be prevented by using OXD ring as connecting unit. It could also use the electronic withdrawing ability properties to moderate the ferrocene’s oxidative potential. When we tune different oxidative units’ potentials of the ferrocene and triphenyl amine at the same, this electopolymerized film would have better hole transporting efficiency and could be made into high performance light emitting device. The device has 27700 cd/m2 of brightness and efficiency of 14.3 cd/A. Its performance is almost as good as PEDOT.