發光高分子奈米線之合成與性質探討｜國立中央大學博碩士論文系統

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研究生：	潘苡秀 Yi-Hsiu Pan
論文名稱：	發光高分子奈米線之合成與性質探討 The photoluminescence of MEH-PPV in mesoporous zeolites
指導教授：	吳春桂 Chun-Guey Wu
口試委員:
學位類別：	碩士 Master
系所名稱：	理學院 - 化學學系 Department of Chemistry
畢業學年度：	91
語文別：	中文
論文頁數：	91
中文關鍵詞：	發光高分子、奈米線、奈米
外文關鍵詞：	photoluminescence, polymer, nano, nanowire
相關次數：	點閱：14 下載：0
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由於奈米結構材料，其性質如光學、磁性、熱傳、擴散以及機械性質，隨著粒徑大小不同而有所差異，使得其各種性質逐漸受到的重視。奈米結構材料在空間上可分零維、一維以及二維奈米材料，而一維奈米材料是指直徑在1~100nm大小的管狀、線狀或柱狀材料。本實驗利用具有奈米孔徑的宿主MCM-41，來製備共軛高分子MEH-PPV奈米線。再以XRD、IR、TGA、UV/Vis、螢光光譜、N2吸附、固態NMR以及ESCA來探討共軛高分子奈米線是否形成及其聚集度對發光特性的影響。由實驗結果發現MEH-PPV經MCM-41宿主分散後其起始吸收和起始放光波長皆往短波長位移，綜合各種數據顯示在MCM-41孔隙中，而TEM證明的確有奈米線的形成，但在MCM-41孔隙內之MEH-PPV奈米線可能不發光；此外只要少量(3wt.%)的MEH-PPV分散在未煅燒的MCM-41上，即可使其螢光強度比純MEH-PPV強。所以MCM-41的功能除了作為宿主來合成MEH-PPV奈米線外，也可經由分散效用來增加MEH-PPV之螢光效率。

The present work describes the preparation and characterization of electroluminescence polymer MEH-PPV inside the mesoporous channels of MCM-41 and SBA-15 silicate molecular sieves. There is no distinguished feature was observed between zeolites and MEH-PPV loaded zeolites in both SEM and TEM micrographs. Nitrogen adsorption/desorption isotherms show that MEH-PPV loaded MCM-41 and free MCM-41 has the similar pore size, but the surface area of MEH-PPV loaded MCM-41 is smaller than that of free MCM-41. Diffusion reflectance UV/Vis spectra and Fluorescence spectra of the MEH-PPV loaded zeolite powder showed a blue shift with respect to the free MEH-PPV powder, consistent with the quantum size effect of the dispersed MEH-PPV. The luminescence efficiency of the polymer dispersed in uncalcined MCM-41 is higher than that dispersed in calcined MCM-41. For example 3wt.% MEH-PPV in uncalcined MCM-41 has the highest luminescence efficiency. This may imply that some MEH-PPV has encapsulated in the pores of calcined MCM-41 and MEH-PPV inside the pores of zeolites may have lower quantum efficiency. MEH-PPV in zeolite has better thermal stability compared to free MEH-PPV. Interestingly, when the MEH-PPV loaded MCM-41 was heated at 900℃ in air, the polymer did not combust totally to H2O and CO2, instead, it forms a carbide-like material with large surface area and high thermal stability.

目錄
中文摘要-----------------------------------------------------------------------I
英文摘要----------------------------------------------------------------------II
目錄-------------------------------------------------------------------------III
圖目錄------------------------------------------------------------------------VI
表目錄------------------------------------------------------------------------IX
壹、緒論-----------------------------------------------------------------------1
1-1 奈米材料的簡介-------------------------------------------------------------1
1-2 塊材（Bulk material）與奈米材料（nano material）的差異---------------------2
1-3 奈米線的重要性-------------------------------------------------------------3
1-4 奈米線的歷史---------------------------------------------------------------5
1-5 有孔性沸石的簡介-----------------------------------------------------------6
1-6 有孔性沸石MCM-41的簡介-----------------------------------------------------7
1-7 發光高分子的簡介-----------------------------------------------------------7
1-8  MEH-PPV的簡介-------------------------------------------------------------8
1-9 研究方向------------------------------------------------------------------10
貳、實驗內容------------------------------------------------------------------11
2-1藥品-----------------------------------------------------------------------11
2-2合成步驟-------------------------------------------------------------------13
2-3儀器分析及樣品製備---------------------------------------------------------22
參、結果與討論----------------------------------------------------------------30
3-1 MCM-41的合成--------------------------------------------------------------31
3-1-1 XRD光譜研究-------------------------------------------------------------31
3-2 MCM-41/MEH-PPV的合成及性質探討--------------------------------------------32
3-2-1 MCM-41/MEH-PPV的XRD光譜研究---------------------------------------------32
3-2-2 MCM-41/MEH-PPV的紅外線吸收光譜------------------------------------------35
3-2-3 MCM-41/MEH-PPV的計量分析與熱穩定性測試----------------------------------36
3-2-4 MCM-41/MEH-PPV的紫外光/可見光吸收光譜與螢光光圖譜-----------------------38
3-2-5氮氣吸附測試-------------------------------------------------------------52
3-2-6固態NMR------------------------------------------------------------------54
3-2-7掃瞄式電子顯微鏡(SEM)圖--------------------------------------------------56
3-2-8穿透式電子顯微鏡(TEM)圖--------------------------------------------------59
3-3 MCM-41/MEH-PPV的加熱處理--------------------------------------------------62
3-3-1 XRD圖-------------------------------------------------------------------62
3-3-2氮氣吸附-----------------------------------------------------------------64
3-3-3光電子光譜（ESCA）分析---------------------------------------------------66
3-3-4固態NMR測量--------------------------------------------------------------68
3-4 MCM-41/MEH-PPV的加氫氟酸處理----------------------------------------------71
3-5 MEH-PPV分散在不同載體上的變化---------------------------------------------73
3-5-1宿主種類對MEH-PPV螢光效率的影響------------------------------------------73
3-5-2宿主孔洞大小對MEH-PPV螢光效率的影響--------------------------------------77
3-5-2.1粉末測試---------------------------------------------------------------77
3-5-2.2薄膜測試---------------------------------------------------------------82
3-5-2.3氮氣吸附測試-----------------------------------------------------------84
肆、結論----------------------------------------------------------------------86
參考文獻----------------------------------------------------------------------88

                                

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