含雙?吩環戊烷之電變色高分子的研究; The Electrochromic Properties of Copolymers Based on DOCPDT

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6552

Title:	含雙?吩環戊烷之電變色高分子的研究;The Electrochromic Properties of Copolymers Based on DOCPDT
Authors:	蔡佩芳;Pei-Fang Tsai
Contributors:	化學研究所
Keywords:	雙噻吩環戊烷;共聚物;電致變色性質;copolymer;DOCPDT;electrochromic property
Date:	2009-06-30
Issue Date:	2009-09-22 10:21:42 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	共軛高分子由於具有應答速度快、光學對比高、著色效率高及溶劑加工容易等優勢，成為具有高潛力的電變色材料之一。欲製造高分子彩色電變色元件時，中性態為RGB (red, green, blue)三原色的共軛高分子材料需先得到。在本研究中，我們將4,4-Dioctyl-cyclopenta-[2,1-b;3,4-b’]dithiophene (DOCPDT)與其它不同單體如Octylthiophene(OT)、carbazole (Cz)、triphenylamine (TPA)、benzo[c][1,2,5]thiadiazole(BTDA)與9-methyl-9H-carbazole (NMeCz)利用Stille coupling 進行對接合成單體，再以氧化聚合的方式合成一系列涵蓋RGB 三原色的共聚物，以NMR 鑑定其結構，再由TGA、SEM 與GPC 數據得知共聚物的基本性質，再探討其電致變色特性，其中紅色 (PDOCPDT-DOT)與綠色 (PBDOCPDT-BTDA)共聚物其電變色性質比文獻中所報導的同樣作為電致變色材料的紅色與綠色高分子優異。使用氧化態PDOCPDT-DOT 為陰極而中性態PBDOCPDT-BTDA 為陽極，搭配膠態電解質所組成之電變色元件，其著色效率比單一共聚物膜高。 Conjugated polymers are potentially useful electrochromic materials due to their advantages of fast response time, high optical contrast, high coloration efficiency and good processibility. For realizing the polymeric electrochromic-based display devices, conjugated polymers with three primary color RGB (Red, Green, Blue) should be attained. In this study,we choose DOCPDT as the basic unit of the polymer backbone. DOCPDT coupled with different moieties such as Octylthiophene (OT), Carbazole (Cz), Triphenylamine (TPA), Benzo[c][1,2,5]thiadiazole (BTDA) and 9-methyl-9H-carbazole (NMeCz) via Stille coupling to form the monomer of the copolymer. Copolymers with three primary colors were obtained by oxidative polymerization of the corresponding monomers. The structures of these copolymers were identified by 1H-NMR spectroscopy and their electrochromic properties were well studied. The red copolymer (PDOCPDT-DOT) and the green copolymer (PBDOCPDT-BTDA) revealed better electrochromic performances compared to the red and green electrochromic polymers reported in the literature. The electrochromic device using the oxidized PDOCPDT-DOT as a cathode, neutral PBDOCPDT-BTDA as an anode, with a gel electrolyte showed very high coloration efficiency, much higher than that of the individual copolymer film.
Appears in Collections:	[Graduate Institute of Chemistry] Electronic Thesis & Dissertation

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