| 研究生: |
黃美珍 Huang, Mei- Jhen |
|---|---|
| 論文名稱: |
含芴及1,3,4-二唑之聚醯胺醯亞胺或聚酯醯亞胺的合成與性質探討 Synthesis and Characterization of Poly(amide-imide)s and Poly(ester-imide)s Containing Fluorene and 1,3,4-Oxadiazole |
| 指導教授: |
葉茂榮
Yeh, Mou-Yung |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系 Department of Chemistry |
| 論文出版年: | 2007 |
| 畢業學年度: | 95 |
| 語文別: | 中文 |
| 論文頁數: | 137 |
| 中文關鍵詞: | 二唑 、聚醯胺醯亞胺 、聚酯醯亞胺 、芴 |
| 外文關鍵詞: | fluorene, oxadiazole, poly(amide-imide)s, poly(ester-imide)s |
| 相關次數: | 點閱:61 下載:0 |
| 分享至: |
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由於目前有機二極體(OLEDs)在顯示器上的貢獻,因此倍受學界及產業界的注目,然而高分子發光二極體(PLED)此種發光元件仍有一些問題尚需克服。目前,許多學者倡導合成具有孤立發光團的有機光分子,改善由於聚合度不一影響發光純度的問題。
由於聚醯胺醯亞胺及聚酯醯亞胺不僅改善了聚醯亞胺溶解度及加工性不佳的缺點,並且保有聚醯亞胺的熱穩定性佳等優點,是著名的高性能高分子材料。故本論文使用直接聚縮合法及低溫溶液聚合法,將含有醯亞胺的單體及雙胺或雙醇合成聚醯胺醯亞胺及聚酯醯亞胺,並將孤立發光團1,3,4-二唑及芴基導入。
將這些高分子進行性質測試,其本性黏度介於0.14~0.31dL/g之間。在溶解度測定方面,這些高分子皆能溶於非質子極性溶劑如NMP、DMF、DMSO中,甚至有些可溶於一般有機溶劑。在熱性質的測試方面,這些高分子在氮氣下損失10%重量的溫度在613~811K之間。而由高分子溶於NMP所得的放射光譜,發現高分子的放射波長在403~490nm,皆在可見光藍光範圍。 從UV/Vis與CV測試,得到P1~P15的HOMO介於-8.19~-7.38eV之間,LUMO介於-4.44~-3.88eV之間; 在XRD測試方面,除了P7、P8、P12、P13呈現半結晶狀態之外,其他的高分子均屬非結晶的狀態。
Orangic lignt-emitting diodes (OLEDs) have recently attracted attention of their potential use in display technology, and then intrigued interests in both academic and industrial circles. However, polymer lignt-emitting diodes (PLED) have some aspects need further improvement. Now, many literator have synthesized some polymer containing isolated luminescent functional groups in order to improve color impurity because the effective length of conjugation
Poly(amide-imide)s and poly(ester-imide)s are well known as high-perfor-mance polymeric materials because of they not only modified polyimides to improve processability and solubility, but also hold excellent thermal stable. In this work, poly(amide-imide)s and poly(ester-imide)s have preparated by direct polycondensation and low temperature solution polymerization from imide-containing monomers and diol or diamine, and 1,3,4
-oxadiazole and fluorene moieties by introducing into the polymer backbone.
Test properties of the synthesized polymers, these polymers having intrinsic viscosity of 0.14~0.31dL/g were obtained. These polymers were soluble in aprotic polar solvents such as NMP, DMF, DMSO, even some of
there were soluble in organic solvents. The temperature of 10% weight loss of these polymers were in the range of 613~811K under nitrogen atmosphere.The emittive wavelengths of these polymers in NMP are located at 403~490 nm in the blue visible region. From cyclic voltammetric and optical investigations, and HOMO and LUMO level of P1~P15 are estimated to be-8.19~-7.38eV and -4.44~-3.88eV, respectively; except P7、P8、P12 and P13 show semicrystalline state, other polymers are were amorphous, as evidenced by the wide-angle X-ray diffraction measurements.
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