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研究生:林傑荃
研究生(外文):Chieh-Chuan Lin
論文名稱:高導電度EDOT/Aniline混成共聚高分子:原位氧化聚合、特性及其應用之研究
論文名稱(外文):Highly Conductive EDOT/Aniline Copolymer Hybrids: In-situ Oxidative Synthesis, Characterization, and Applications
指導教授:戴子安戴子安引用關係
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:高分子科學與工程學研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:英文
論文頁數:64
中文關鍵詞:PEDOT聚苯胺導電性高分子摻雜氧化鋅奈米複合材料
外文關鍵詞:PEDOTpolyanilineconducting polymerdopingZnOnanocomposite
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本研究利用化學氧化原位聚合的方式合成EDOT單體與苯胺單體的高導電性共聚物薄膜,使用氧化劑Fe(OTs)3及Imidazole來與Fe(OTs)3作用,整個系統的反應是在甲醇溶液中進行。我們改變各個變數,如EDOT/Aniline(和Aniline/EDOT)、IM/Monomers及Fe(OTs)3/Monomers的莫耳比例,來探討其對導電度、光學性質及表面形態的影響,並找出各個變數在導電性最佳情況下的比例。在最佳情況下,其導電度比利用相同方法所聚合出的PEDOT及聚苯胺高出2~3倍。此導電度的提升是因為添加了EDOT單體或苯胺單體改變了共聚合反應的反應速率,而使共聚物薄膜的表面較均勻平坦。我們可藉由紫外光可見光光譜得知共聚物薄膜的摻雜程度。利用傅立葉轉換紅外線光譜,我們證實了EDOT單體和苯胺單體共聚物的生成。
製備氧化鋅奈米柱/共聚物複合薄膜可分為三個步驟:共聚物薄膜的合成、將氧化鋅晶種附在共聚物薄膜的表面上、以水熱法成長氧化鋅奈米柱。我們可利用X光繞射光譜儀得知氧化鋅的結晶情形,及利用掃描式電子顯微鏡得知氧化鋅奈米柱的排列情況。當氧化鋅奈米柱成功形成在共聚物薄膜的表面上,即可加強酸鹼緩衝能力。


In this study, highly conductive copolymer films of 3,4-ethylenedioxythiophene (EDOT) and aniline were synthesized by chemical oxidative in situ copolymerization using iron(III) p-toluenesulfonate (Fe(OTs)3) as an oxidant and imidazole (IM) coordinating with Fe(OTs)3 in methanol. We investigated the effect of each variable such as the molar ratios of Aniline/EDOT (and EDOT/Aniline), IM/Monomers and Fe(OTs)3/Monomers on the conductivity, optical property, and surface morphology of the copolymer films. These parameters were optimized to maximize conductivities which are 2~3 times higher than PEDOT and polyaniline films synthesized by the same method. The enhancement of conductivities for copolymer films was due to the fact that the addition of aniline or EDOT changed the copolymerization rate, leading to a more uniform surface morphology. The UV-Visible absorption spectra also illustrated the doping level of copolymer films. From the study of FTIR spectra, we confirmed the formation of copolymer of EDOT and aniline.
The ZnO nanorods/copolymer composite films were prepared by a three-step process: synthesis of copolymer films, deposition of ZnO seeds on copolymer films, and hydrothermal growth of ZnO nanorods. The crystallinity and morphology of ZnO nanorods on copolymer films were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. After growing ZnO nanorods on the copolymer films, the pH buffering ability could be improved.


誌謝 I
Abstract II
摘要 III
Contents IV
List of Figures VI
List of Tables VIII

Chapter 1 Introduction 1
Chapter 2 Literature Review 3
2-1 Introduction of conducting polymer 3
2-2 Introduction of PANI 3
2-2-1 Synthesis of PANI 6
2-2-1-1 Chemical synthesis 6
2-2-1-2 Electrochemical synthesis 7
2-2-1-3 Synthesis by other methods 9
2-2-2 Applications of PANI 9
2-2-2-1 Rechargeable batteries 9
2-2-2-2 Electrochromic display devices 10
2-2-2-3 Chemical sensors 10
2-3 Introduction of PEDOT 11
2-3-1 Synthesis of PEDOT 11
2-3-1-1 Oxidative chemical polymerization of EDOT 11
2-3-1-2 Electrochemical polymerization of EDOT 13
2-3-1-3 Organometallic dehalogenation polycondensation 14
2-3-2 Applications of PEDOT 14
2-3-2-1 Antistatic coatings 15
2-3-2-2 Electrode material in capacitors 15
2-3-2-3 Hole injection layer in OLEDs 16
2-4 Introduction of ZnO one-dimensional nanostructure 16
2-4-1 Synthesis of ZnO 1D nanostructure by hydrothermal methods 17
2-4-2 Application of ZnO 1D nanostructures 18
Chapter 3 Experimental 19
3-1 Materials 19
3-2 Synthesis of copolymer of EDOT and Aniline 20
3-3 Preparation of ZnO nanoparticles suspension 23
3-4 Preparation of ZnO nanorods/copolymer composite film 23
3-5 Characterization 26
3-5-1 Measurement of conductivity of copolymer films 26
3-5-2 UV-Visible absorption of copolymer films 26
3-5-3 Morphology observation 26
3-5-4 Fourier transformed infrared (FTIR) spectra of copolymer powder 27
3-5-5 X-ray diffraction (XRD) analysis 27
3-5-6 pH buffering ability 27
Chapter 4 Results and Discussion 28
4-1 Conductivity of copolymer films 28
4-1-1 Effect of the molar ratios of Aniline/EDOT and EDOT/Aniline 28
4-1-2 Effect of IM 37
4-1-3 Effect of Fe(OTs)3 44
4-1-4 Optimization of properties 45
4-2 FTIR spectra of copolymer powder 50
4-3 ZnO nanorods growth on copolymer films 52
4-4 pH buffering ability of copolymer films and ZnO nanorods/copolymer films 55
Chapter 5 Conclusions 59
Reference 61


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