本文選題：電致變色材料 + 三苯胺��； 參考：《吉林大學(xué)》2017年碩士論文

【摘要】：電致變色是指材料在外界電壓作用下發(fā)生氧化還原過程,同時在可見光區(qū)產(chǎn)生可逆的光學(xué)透過或吸收變化,這一特殊的性質(zhì)吸引了學(xué)術(shù)界和工業(yè)界的廣泛研究興趣。相比于無機電致變色材料,有機電致變色材料具有響應(yīng)速度快、能量損耗低以及顏色變化多樣的優(yōu)點。近年來,三苯胺及其衍生物作為空穴傳輸材料而廣泛應(yīng)用在光電領(lǐng)域,除此之外還因其優(yōu)異的電致變色性質(zhì)而引起了關(guān)注。三苯胺具有一個氮原子氧化還原中心,并且空間構(gòu)型類似于螺旋槳形。將三苯胺結(jié)構(gòu)引入聚合物中,不僅賦予了聚合物電致變色的性質(zhì),還改善了聚合物的溶解性。因此,三苯胺類的電致變色材料可以通過溶液涂覆成膜的工藝方法廣泛應(yīng)用在智能窗、汽車防炫目后視鏡和電致變色顯示器等工業(yè)器件中。本文以基于三苯胺的聚酰胺為研究對象,從分子結(jié)構(gòu)設(shè)計角度出發(fā),制備基于多個氮原子中心的多重電致變色的聚酰胺材料。設(shè)計在聚酰胺結(jié)構(gòu)中引入二甲基胺基團,從而增加聚酰胺的氮原子氧化還原活性中心。本文設(shè)計并制備了兩種不同系列的聚酰胺,均展現(xiàn)出多重電致變色性質(zhì)。具體如下:(1)合成了4-二甲基胺取代的三苯胺結(jié)構(gòu)的二胺,設(shè)計并合成了含有4-二甲基胺取代的三苯胺結(jié)構(gòu)的二酸。將均含有4-二甲基胺取代的三苯胺結(jié)構(gòu)的二胺與二酸通過脫水聚合反應(yīng)制備含有多個氮原子中心的聚酰胺PA-Ⅰ。對該系列聚酰胺的電化學(xué)和電致變色性質(zhì)進行了重點研究,聚酰胺PA-Ⅰ薄膜在電化學(xué)測試過程中展現(xiàn)出4對可逆的氧化還原峰,且具有較低的氧化起始電位(0.38 V)。在電壓逐漸增加的過程中,聚酰胺PA-Ⅰ薄膜展現(xiàn)出四種顏色的變化,這是由于聚酰胺PA-Ⅰ單元有四個氮原子氧化還原活性中心。(2)設(shè)計并合成了含有4-二甲胺取代的四苯基對苯二胺結(jié)構(gòu)的二胺單體,并與兩種不同的二酸進行脫水縮合反應(yīng)制備聚酰胺PA-Ⅱ系列。該系列聚酰胺的電化學(xué)研究表明,PA-Ⅱ具有4對可逆的氧化還原峰,氧化起始電位僅有0.22-0.23 V,并且第一個電化學(xué)氧化還原具有良好的穩(wěn)定性。在電壓變化的過程中,聚酰胺PA-Ⅱ具有四種顏色的變化,是由于聚酰胺PA-Ⅱ單元的四個氮原子發(fā)生氧化還原作用造成的。以上結(jié)果表明:在基于三苯胺的聚酰胺中引入二甲基胺基團,大大降低了聚合物的氧化起始電位;更重要的是還增多了聚合物的氮原子活性中心,使制備的聚酰胺在外加電壓的作用下能夠展現(xiàn)出多重顏色的變化。
[Abstract]:Electrochromism refers to the redox process of materials under the action of external voltage and the reversible optical transmission or absorption change in the visible light region. This special property has attracted extensive research interest in academia and industry. Compared with inorganic electrochromic materials, organic electrochromic materials have the advantages of fast response, low energy loss and variety of colors. In recent years, trianiline and its derivatives have been widely used as hole-transport materials in the field of photoelectricity. In addition, their excellent electrochromic properties have attracted much attention. Trianiline has a redox center of nitrogen atom and its spatial configuration is similar to that of propeller. Introducing trianiline structure into polymer not only endows the polymer with electrochromic property, but also improves the solubility of polymer. Therefore, trianiline electrochromic materials can be widely used in industrial devices such as smart windows, automotive rearview mirrors and electrochromic displays by solution coating. In this paper, the polyamide based on trianiline was used as the object of study. From the point of view of molecular structure design, polyamides based on multiple nitrogen atom centers were prepared. The dimethyl amine group was introduced into the polyamide structure to increase the nitrogen atom redox active center of the polyamide. In this paper, two different series of polyamides have been designed and prepared. In this paper, 4-dimethylamine substituted trianiline diamine was synthesized, and diacid containing 4-dimethylamine-substituted trianiline structure was designed and synthesized. A polyamide PA- 鈪，

本文編號：2025911