新型含多苯胺功能性高分子之設計、合成與其電致變色性質探討

Abstract

本論文分為四個章節，第一章為總體序論，簡述電致變色現象及常見的材料與其應用及發展。第二章將二甲胺基引入以三苯胺為基底的電致變色材料中，所設計之三苯胺衍生物不僅擁有四段變色的特性，且因推電子基團的存在，其所需的氧化電壓相較低。利用能斯特方程式深入探討所合成之小分子NTPPA-2Si 及 NTPB-2Si的氧化行為，而相對應的高分子材料-聚(醚碸）可由甲矽烷基縮聚成功製備。所得之新高熱穩定性高分子薄膜材料NTPPA-PES 及 NTPB-PES具備良好的加工性及電致變色性質，於透明態具有高度透明性外，顯示多段顏色變化並且能夠回至基態的行為。第三章利用第二章的單體進行去保護，藉由介面聚合法成功合成新聚酯材料，NTPPA-PET 及 NTPB-PET，此材料因結構中脂肪烴長鏈的引入，具有良好的加工性及透明性。第四章為結論，此研究所開發合成之新材料在未來應用上具有潛力。

This study has been separated into four chapters. Chapter 1 is the general introduction of electrochromism including its commonly used materials and applications. In chapter 2, dimethylamino group has been introduced into TPA-based electrochromic materials. The designed TPA derivatives not only show four states of color change but also possess lower working potential due to the presence of dimethylamine as electron donating group. Nernst equation is used to discuss the oxidation behavior of small molecules, NTPPA-2Si and NTPB-2Si. On the other hand, the corresponding polymer NTPPA-PES and NTPB-PES can be obtained by silyl polycondensation. The polymers can be cast into thin films with great thermostability, processability and electrochromic property. These films also show high transparency with multiple color change states and can return to the original transparent state with ease. In Chapter 3, with the deprotection of monomers in Chapter 2, novel polyesters, NTPPA-PET and NTPB-PET, are successfully prepared by interfacial polymerization. Owing to the incorporation of aliphatic structure, both polymers perform great processability and transparency. Finally, Chapter 4 is the total conclusion of the study.