本研究論文,利用高電子電洞傳導特性的三苯胺 (triphenylamine)基團作為末端基,設計合成出具有良好電化學活性及穩定性之分子,修飾上雙性離子分子之TPA-SB、含胜肽片段之TPA-MI及普通三苯胺衍生物compound 9、10、11,以電化學聚合法將此系列化合物沉積於 ITO導電玻璃上研發一系列導電高分子材料,藉此探討雙性離子分子對聚合性的影響,並以SEM影像圖觀察薄膜表面型態。同時,利用分子結構設計的不同,進行以下測試: (1) 生醫電子元件:將仿生結構TPA-SB、TPA-MI以不同比例摻混,共聚出仿生雙性離子高分子材料,利用X光電子能譜 (XPS)表面分析表面組成,並針對材料表面之親水性 (hydrophilicity)討論其在生物醫學應用上之可能性;(2)電致變色元件:由於三苯胺電致變色的特性,利用光譜電化學分析薄膜顏色變化與氧化反應電位,探討其在電致變色元件應用上之可能性。
We synthesized triphenylamine-based zwitterion TPA-SB, maleimide-functionalized triphenylamine TPA-MI, and triphenylamine derivatives compound 9, 10, 11. A systematic analysis for electrochemical polymerization of triphenylamine on an indium – tin oxide (ITO) electrode was performed, and the polymer film was investigate by scanning electron spectroscopy (SEM). There are two studies:(1)Bioelectronic character:Electrochemical polymerization of TPA-SB with different fractions of TPA-MI develop a bionic conducting polymer on ITO. Using X-ray photoelectron spectroscopy (XPS) calculate the compositions of the copolymer films. The resistance of polymer films towards the adhesion of proteins resulted from the highly hydrophilic yet net-neutral properties of the zwitterion on surfaces, so we test the surfactant hydrophilicity by water droplet contact angles analysis. (2)Electrochromic character:The triphenylamine polymer film have electrochromic character. Using spectroelectrochemistry (SEC) to discuss the correlation between electrochemical reaction and color change of polymer film.