含二苯胺之α-苯基肉桂腈衍生物之設計與合成及其電致變色發光元件之應用

Abstract

本論文分為四個章節，第一章為總體序論，簡述電致變色、聚集誘導發光及電致變色發光元件的應用及發展。第二章將具有聚集誘導發光的α-苯基肉桂腈衍生物結合膠態電解質製備成電致變色發光元件，希望透過膠態來限制聚集誘導發光的分子運動，藉此來達到其發光的特性。在材料上，四個具相似結構的聚集誘導發光分子被成功合成並探討其光學與發光行為，而元件則以小分子型的diOMe-TPA-CN及diOMe-TPA-CNBr為陽極材料，與紫精衍生物的陰極材料進行搭配，讓陽極及陰極變色材料作為互相之電荷儲存基層，達到穩定及降低工作電壓的效果，並藉由材料在UV-Vis吸收光譜上的吸收區段與材料的放光區段相近，達到螢光淬滅之效果。第三章節是由第二章的單體所衍生出的一系列具有不同陰離子與不同碳鏈長的吡啶鹽，並針對其不同的結構對其基本的光學、發光與電化學性質進行探討。第四章為結論。

This study has been divided into four chapters. Chapter 1 is general introduction of electrochromism, aggregation-induced emission (AIE), and electrofluorochromism (EFC). In chapter 2, four triphenylamine-based cyanostilbene derivatives with different substituents were synthesized successfully for investigating the effects on photoluminescent properties, electrochromic and electrofluorochromic (EFC) behaviors in gel-type electrochromic devices (ECDs). The photoluminescent performance of the resulted materials in the solution, aggregated and solid states, would be influenced by the substituents, respectively. Also, these AIE-active materials in the aggregated state could be utilized to fabricate high-performance gel-type electrofluorochromic (EFC) devices. On the other hand, by cathodic EC materials into devices, shorter response time and higher contrast ratio were obtained. In chapter 3, a series of diphenylamine-based cyanostilbene derivatives with different alkyl chain and anion were synthesized successfully for investigating their effects on optical properties, photoluminescent properties and electorchemical properties. In addition, the intrinsically ambipolar system was built on the triphenylamine and pyridinium salt unit, which could be served as a charge storage layer to rapid balance the charge during redox reaction. The photoluminescent performance of the resulted materials in the solution, aggregated and solid states, would be influenced by the different alkyl chains as well as the kinds of anion.