博碩士論文 87621017 詳細資訊




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姓名 徐若韶(Ruoh-Shaur Hsyu)  查詢紙本館藏   畢業系所 化學學系
論文名稱 電致發光電池中電解質的結構與物性探討
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摘要(中) 我們的研究顯示PdOPV (poly(dioctyloxy phenylene vinylene))為PPV上烷氧基雙取代之聚合物,其最大吸收波長(λmax)為592nm,玻璃轉移溫度(Tg)在0℃。
將PdOPV與PEO(poly ethylene oxide)及LiClO4混摻後即成為所需之電解質。其UV及PL光譜往紅位移方向移動,是由於PEO促使PdOPV分子立體規則提高,增加有效共軛長度所致。
而IR光譜則顯示兩種高分子之間並無強分子間作用力存在。但由13C NMR光譜中化學位移的變化見到高分子介面的形成。7Li NMR則清楚地知道鋰離子在混摻系統各成分中的含量,隨著不同的混摻比例及不同的溫度變化而有顯著的改變。
我們更藉由半高寬得到活化能(Ea)的資訊,並配合AFM的表面分析,我們得到鋰離子在PdOPV及PEO之間的配位結構,以及PdOPV中的鋰離子是藉由PEO區塊而進入其中的傳導機制。這些是首次將核磁共振法應用於LEC電解質所獲致的成果。
摘要(英) Alkoxy ring-substituted PPV, poly(dioctyloxy phenylene vinylene) (PdOPV), emits on orange light (λmax, PL = 592 nm) region. The glass-transition temperature is at 0℃ for all LEC samples.
The electrolytes are blended from PdOPV with poly(ethylene oxide)(PEO) and LiClO4. PEO improves regulations and increases the effective conjugating length of PdOPV, so the UV and PL spectra have red shift.
IR spectra show that there are no strong molecular forces between two polymers. From the variations of chemical shift in 13C NMR spectra we can observe the formation of interface between polymers. The contents of lithium in blending systems are changed obviously with changing blending ratios and temperature.
The activation energy (Ea) obtained form half-height width of NMR. Surface analyses from AFM and Ea values can realize the coordination structure of lithium between PdOPV and PEO. In concluded, we have found that the transformation mechanism of lithium in PdOPV domain is controlled by PEO domain. For the first time, electrolytes of LEC is characterized by solid state NMR and AFM.
關鍵字(中) ★ 電致發光電池
★ 有機共軛高分子
★ 高分子電解質
關鍵字(英) ★ Light-emitting Electrochemical Cell
★ LEC
★ Organic conjugated polymer
★ polymer electrolyte
論文目次 目錄…………………………………………………………………………I
中文摘要………………………………………………………………….. V
英文摘要…………………………………………………………………..VI
表目錄…………………………………………………………………….VII
圖目錄……………………………………………………………………VIII
第一章 緒論………………………………………………………………..1
1-1 前言………………………………………………………………….1
1-2 共軛高分子之電子結構與能帶理論……………………………….2
1-3 理論………………………………………………………………….4
1-3-1 螢光理論………………………………………………………..4
1-3-1.1 螢光形成原因……………………………………………...4
1-3-1.2 影響螢光的因素………………………………………….6
1-3-2 金屬半導體理論………………………………………………7
1-3-2.1 金屬-半導體接合…………………………………………..8
1-3-2.2 電流輸送過程……………………………………………...9
1-3-3 NMR理論………………………………………………………10
1-4 本文目的……………………………………………………………13
圖表/第一章…………………………………………………………..14
第二章 文獻回顧………………………………………………………….19
2-1 PPV及其衍生物…………………………………………………….19
2.2取代PPV之結構與物性…………………………………………….20
2-3 高分子發光二極體…………………………………………………21
2-3-1 前言……………………………………………………………21
2-3-2 發光原理………………………………………………………21
2-3-3 多層發光二極體………………………………………………24
2-3-4 摻雜發光二極體─電致發光電池…………………………..25
圖表/第二章…………………………………………………………..27
第三章 實驗及其技術原理……………………………………………….31
3-1 微差掃瞄卡計原理…………………………………………………31
3-1-1 利用DSC測量混摻高分子玻璃轉移溫度之原理探討……...32
3-1-2 利用DSC測量混摻高分子熔解熱下降原理探討………….32
3-2 導電度值測量裝置及原理…………………………………………33
3-3 固態核磁共振儀應用在混摻高分子電解質之原理……………..34
3-3-1 去耦合作用…………………………………………………..35
3-3-2 魔角旋轉……………………………………………………..36
3-3-3 四極矩核種的重要性………………………………………..38
3-3-3.1 四極矩核種的概觀………………………………………39
3-3-3.2 半整數四極矩核種中間峰的線型模擬計算…………...40
3-3-4 弛緩過程……………………………………………………..41
3-4 原子力顯微術原理………………………………………………..44
3-5 實驗內容…………………………………………………………..45
3-5-1 藥品…………………………………………………………..46
3-5-2 混摻高分子電解質之製備…………………………………..47
3-5-2.1 Poly(dialkoxy phenylene vinylene)之合成……………...47
3-5-2.2 高分子電解質之摻和…………………………………...51
3-6 元件製作…………………………………………………………..51
3-7 儀器設備及實驗參數……………………………………………..52
圖表/第三章…………………………………………………………..56
第四章 結果與討論……………………………………………………….65
4-1 PdOPV相關物性的探討………………………………………….65
4-1-1 熱重損失分析………………………………………………..65
4-1-2 微差掃瞄卡計分析……………………………………..……65
4-1-3 紫外光-可見光及螢光光譜分析…………………………….66
4-2 微差掃瞄卡計分析………………………………………………..68
4-3 紅外線光譜的研究………………………………………………..70
4-4 固態核磁共振光譜分析…………………………………………..73
4-4-1 7Li NMR光譜………………………………………………...73
4-4-2 CP/MAS NMR光譜………………………………………..76
4-4-3 鋰離子在混摻系統中之活化能……………………………..78
4-5 螢光光譜分析……………………………………………………..84
4-5-1 紫外光-可見光光譜…………………………………………...84
4-5-2 螢光光譜……………………………………………………..85
4-6 表面型態分析……………………………………………………..86
4-7 結論………………………………………………………………..87
圖表/第四章…………………………………………………………..91
第五章 總結及未來展望………………………………………………...135
參考文獻………………………………………………………………….139
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指導教授 諸柏仁(Po-Jen Chu) 審核日期 2000-7-12
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