高透明度奈米銀線/聚二甲基矽氧烷電極應用於可拉伸式電致變色元件之製備及性質探討

本論文分成四個章節，第一章為總體序論。第二章為高透明度奈米銀線/聚二甲基矽氧烷電極於可拉伸式電致變色元件的製備及性質探討，此章節首先合成了高長徑比之奈米銀線，並搭配聚二甲基矽氧烷基材製備出高透明度且可拉伸之透明電極。利用此電極並搭配三苯胺衍伸物和紫精製備出雙極式可拉伸式電致變色元件，以五種具不同結構和氧化電位之三苯胺衍伸物為變色單元搭配紫精，使此可拉伸式電致變色元件在基態具有高透明度，而在外加電壓下時，可變為藍色、深咖啡色、綠色、淡黃色和黃綠色五種不同的電致變色型態。第三章為此可拉伸式電致變色元件之穩定度探討，利用低氧化還原電位之雙極式電致變色單體來降低工作電壓並改善其穩定度。此外更利用了具電活性之材料做為保護層覆蓋銀線電極使其不易受外加電壓影響，此方法不僅能將銀線隔絕於電化學反應外還能藉由保護層之電活性單元來達到電致變色效果。第四章節為結論。此研究利用高長徑比之奈米銀線與製程改進來提升銀線電極之表現，使其在未來應用上具有更大的潛力，並結合實驗室已開發多年之三苯胺系列電致變色材料與可拉伸式電極之應用，拓展了此類電致變色材料的應用層面。

關鍵字

奈米銀線；聚二甲基矽氧烷；電致變色；雙極式；三苯胺

並列摘要

This study has been separated into four chapters. Chapter 1 is the general introduction. Chapter 2 includes the synthesis of silver nanowire (AgNW) with high aspect ratio, preparation of highly transparent AgNW/PDMS hybrid electrodes and the fabrication of the stretchable ambipolar electrochromic devices (ECDs) with five different EC color performance. Chapter 3 describes the stabilities studies of the AgNW/PDMS stretchable ECDs and the ways for improvement. Chapter 4 is conclusions. The synthesis of AgNW, basic characterization, fabrication parameters, optical and electrical properties, electrochemical and spectroelectrochemical properties of the novel stretchable ambipolar ECDs were investigated and improved. The AgNW/PDMS hybrid electrodes were prepared by a simple preparation process. Owning to the carefully controlled experimental conditions, the obtained stretchable electrodes showed great performance on both optical and electrical properties. Moreover, we applied these AgNW/PDMS electrode to fabricate the stretchable ECDs with five different triphenylamine (TPA) EC materials and heptyl viologen. The obtained stretchable ECDs all showed transparent at neutral state and switched to various colors according to the different redox pair under applied potential. In another part, we firstly examined the electrochemical stabilities of the above ambipolar ECDs. There were an improvement on their electrochemical stability while utilizing the ambipolar EC pair with lower redox potential. Besides, we also find out another approach for improvement by covering the exposed AgNW with electroactive EC films. By this sensible combination, we can not only increase the stability of AgNW/PDMS electrode but also get the EC behavior on these stretchable electrode.