具電活性三苯胺之雙極式電致變色元件

Abstract

本論文分成四個章節，第一章為總體序論。第二章探討含有TPA和NTPA分別與紫精混摻之電致變色元件的設計與製作。第三章提及新型雙極式電致變色材料1-(2-(4-(bis(4-methoxyphenyl)amino)phenoxy)ethyl)-1'-ethyl-[4,4’-bipyridine]- 1,1'-diium tetraflouroborate (TPA-Vio) 以及 2-(4-(bis(4-methoxyphenyl)amino)phenoxy)anthracene-9,10-dione (TPA-AQ) 之合成、電化學及電致變色行為。第四章為結論。具電活性三苯胺之雙極式電致變色元件之設計與製備、電化學及電致變色性質已被研究與比較。藉由引入助電荷平衡之陰極變色材料，所得到的元件在變色時可擁有兩個顏色疊加，且具有良好的電致變色穩定性。另外，此概念顯著地在氧化過程中減少其工作電壓且也改善了著色時間及褪色時間。這些結果概述不管是混摻亦或是共價鍵結的方式引入紫精都是既簡易且可實現的方法並可得到高效率的電致變色元件。

This study has been divided into four chapters. Chapter 1 is general introduction. Chapter 2 presents the design and fabrication of the electrochromic devices containing tris(4-methoxyphenyl)amine (TPA) and 4,4′-dimethoxy-4′′-(dimethylamino)tripheny- lamine (NTPA) blended with heptyl viologen tetrafluoroborate (HV) respectively. Chapter 3 mentioned that synthesis, electrochemical and electrochromic properties of novel ambipolar electrochromic materials 1-(2-(4-(bis(4-methoxyphenyl)amino)phenoxy)ethyl)-1'-ethyl-[4,4’-bipyridine]-1,1'-d-iium tetraflouroborate (TPA-Vio) and 2-(4-(bis(4-methoxyphenyl)amino)phenoxy)anthracene-9,10-dione (TPA-AQ) respectively using in electrochromic device. Chapter 4 is conclusions. The design, fabrication, electrochemical and electrochromic properties of ambipolar electrochromic device based on electroactive triphenylamine were investigated and compared. With introduction of cathodic electrochromic materials which are served as charge balance agents, the obtained devices revealed two colors combination during coloring state and excellent electrochromic stability. Moreover, this consideration notably reduced driving voltage over the oxidative procedure and improved switching time for coloration and decoloration. These results demonstrate conclusively that introduction of viologen for blending and covalent-bonding could be a simplistic and attainable approach to obtain highly efficient electrochromic devices.