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研究生:劉信佑
研究生(外文):Shin-Yu Lio
論文名稱:PFO/Polythiophenes 混摻螢光能量轉移效能之研究
論文名稱(外文):Fluorescence Energy Transfer study on PFO/Polythiophene Blends
指導教授:陳素華陳素華引用關係
指導教授(外文):Su-Hua Chen
學位類別:碩士
校院名稱:國立東華大學
系所名稱:材料科學與工程學系
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
論文頁數:78
中文關鍵詞:螢光能量轉移共軛高分子施體受體
外文關鍵詞:fluorescence energy transfercongugated polymersdornoracceptor
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共軛高分子系列(conjugated polymers)為多晶系材料,其光電性質往往受到結晶結構與相變化影響。本研究探討在混摻過程中共軛高分子螢光能量轉移與相變化之關聯性。混摻系統中施體(donor)為發藍光之Poly(9,9-di-n-octyl- 2,7-fluorene) (PFO),受體(acceptor)有兩種樣品,皆為發紅光的聚塞吩衍生物系列,分別是Poly(3-hexylthiophene-2,5-diyl) (P3HT)、Poly(3,3’’’-didodecylquarter thiophene (PQT)。施體的PFO具有介穩定β相、結晶α相以及液晶nematic相。利用旋轉塗佈混摻受體濃度為20%的薄膜樣品,經由控制升、降溫速率量測變溫螢光光譜,觀察隨著溫度改變PFO發生相變化時,PFO不同相的螢光能量轉移至受體聚塞吩衍生物的效率。PFO/P3HT混摻系列,選擇不同溫度範圍探討改變溫度的效應。另兩組的實驗分別是為了驗證螢光能量轉移與相變化關係之再現性PFO/P3HT(80/20)、以及檢驗donor化學結構改變的影響PFO/PQT(80/20)▫結果顯示在3組混摻系統中皆顯示PFO的β相之螢光能量轉移效率最佳(約90%),其混摻螢光光譜顯示以橙黃光(donor發光)為主、向列型液晶相的螢光能量轉移效率次之(約50%),donor與acceptor皆有發光。而結晶相幾乎沒有螢光能量轉移(< 10%),其混摻螢光光譜幾乎只有PFO所發的藍光。由此推測,分子排列規則度越高的結構,越不易發生能量轉移現象。而不同溫度範圍的改變對螢光能量轉移沒有明顯影響。另外,PQT在混摻系統中顯現優於P3HT的發光效率,即使只有少量的能量轉移,如結晶相或是液晶相

關鍵字: 螢光能量轉移、共軛高分子、施體、受體。

Conjugated polymer series (conjugated polymers) for multi-crystalline materials, their optical and electrical properties are often subject to the crystal structure and phase changes. This study investigated the correlation in the process of blending the conjugated polymer fluorescence energy transfer with phase change. Blending system of the donor in blue-ray of poly(9,9-di-n-octyl- 2,7-fluorene) (PFO) the receptor (the acceptor) of the three samples are red poly thiophene derivatives series, namely poly (3-hexylthiophene-2,5-diyl) (P3HT) and poly (3,3 ''-didodecyl quarter thiophene (PQT). The donor (PFO) metastable β phase ,crystallization of the α phase, and the liquid crystal nematic phase ,using spin coating blends receptor concentration of 20% of the film samples, through the control rate measurement of the heating and cooling temperature fluorescence spectroscopy to observe the PFO occurrence of phase changes as the temperature changes ,the efficiency of the PFO different fluorescence energy transfer to the receptor poly thiophene derivatives. PFO/P3HT blended series, choose a different temperature range to explore the effect of changing temperature. The other groups of experiments in order to verify that the reproducibility fluorescence energy transfer relationship with the phase change, and test the impact of changes in the donor chemical structure of the PFO / PQT (90/10) ▫ The results showed that the three blended system are displayed the PFO β-phase fluorescent energy transfer efficiency (about 90%) is best, blended spectra show the orange light (luminescence donor).The nematic liquid crystal phase of the fluorescence energy transfer efficiency (50%) followed by. Both light-emitting donor and acceptor.Crystalline phase almost no fluorescence energy transfer (<10%), blended the blue-ray fluorescence spectroscopy is almost only PFO hair. Inferred that the structure of the molecular arrangement rules the higher, the more difficult the occurrence of the phenomenon of energy transfer. The temperature changes had no significant effect on the fluorescence energy transfer. In addition, the PQT blending system appeared superior to the P3HT in luminous efficiency, even if only a small amount of energy transfer, such as crystalline phase or liquid crystalline phase.
Keywords: fluorescence energy transfer、congugated polymers 、
dornor、acceptor。

目錄
第1章 1
1.1 前言 1
1.2研究動機與目的 2
1.3文獻回顧 3
1.3.1 Poly(9,9-di-n-octyl- 2,7-fluorene) (PFO) 4
1.3.2 Poly(3-hexylthiophene-2,5-diyl)(P3HT) 7
1.3.3 Poly(3.3’’’-didodecyl quarter thiophene(PQT) 8
第2章 9
2.1理論基礎 9
2.1.1 共軛高分子 9
2.1.2螢光能量機制 12
第3章 17
3.1實驗內容 17
3.1.2實驗架構 17
3.2實驗量測 19
3.1.1實驗樣品 19
3.1.2溶液及試片製備 20
3.2.1 XRD介紹及量測 21
3.2.2 DSC介紹及量測 21
3.2.3紫外光譜儀介紹及量測 22
3.2.4螢光光譜儀介紹及量測 23
第4章 25
4.1純PFO 各項儀器量測 25
4.2純P3HT各項儀器量測 33
4.3 PFO/P3HT UV和PL光譜量測 40
4.4純PQT各項儀器量測 48
4.5 PFO /PQT UV光譜和PL量測 56
4.6 PFO/P3HT能量轉移效率圖表 63
4.7 PFO/PQT能量轉移效率圖表 68
第5章 73
結論 73
參考文獻 75

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