高性能電致變色材料的設計與合成及製備電化學安定之奈米銀線電極

Abstract

本論文分成四個章節：第一章為緒論，講述電致變色現象以及奈米銀線材料；第二章則是合成高性能的電致變色材料 (NTPB-PA)，由於在苯基的對位上有二甲胺基基團，因此材料可以展現出多段變色的樣貌之外，所需的氧化電位也較低。接著材料與二氧化鋯進行反應形成混成材料，此步驟能提升電致變色的表現。最後，再將陰極變色材料紫精衍生物引入至電致變色元件，可以達到全波段遮蔽之效果；第三章則是成功的合成高長徑比之奈米銀線，透過引入具電活性的三苯胺為基底的電致變色材料作為鈍化層，其奈米銀線之電活性及與基材之間的附著力都能同時達到改善，並將此複材電極更進一步地製備出電致變色元件。而所有結果總結於第四章。

This study has been divided into four chapters. Chapter 1 is the general introduction of electrochromism and silver nanowires. In Chapter 2, the high-performance TPA-based electrochromic (EC) material, NTPB-PA, demonstrated multiple color appearance and lower oxidation states owing to dimethylamino groups at the para-position of the phenyl. Besides, functional hydroxyl groups on NTPB-PA backbones could be conducted to in-situ sol-gel reaction to form covalent bonds with zirconium dioxide (ZrO2). The results have been shown to enhance EC performance. Subsequently, anodic ECM, heptyl viologen (HV), is introduced into the electrochromic device (ECD) to construct ambipolar system and show the absorption of full-wavelength band during redox procedure. In chapter 3, silver nanowires (AgNWs) with high aspect ratio have been synthesized successfully. And the electrical stability issue of AgNWs was improved through introducing electroactive TPA-based polymer films as passivation layers onto the AgNW networks. At the same time, the adhesion between AgNWs and substrates increased. These hybrid electrodes, AgNW/TPPA hybrid electrodes were further applied to fabricate ECD. Finally, all the results are concluded in Chapter 4.