臺灣博碩士論文加值系統

本研究合成了兩個系列的高分子，一為使用非線性光學係數高的DR-19發色團與奈環合成聚酯高分子，另一則由DR-19與光架橋基團（cinnamylidenemalonic acid）的合成來進行光架橋。
研究結果顯示，含奈環的高分子系列有良好的加工性和成膜性，且該材料為非晶性，有良好的透光度。由於含奈環高分子的Tg不高，故以光架橋基團取代奈環，希望以架橋的形成來穩定分子鏈的移動，目前已完成架橋前的高分子性質，可為架橋高分子的延續基礎。
將上述三種高分子利用電暈極化（corona poling），使其發色團（chromophore）產生配向（orientation）形成不對稱中心，接著利用反射式電光係數檢測儀器來測量r33值，測得的值為1.75∼3.17 pm/V之間，所得之值是偏低，推測材料的表面需要蒸鍍法鍍上一層鋁膜，在此高溫的環境下，擾亂了發色團的配向，故也使電光系數值偏低，所以需要以其他儀器來測量，如測定d33才能確定真正的值。

In this research, two series of polymers were prepared. One polymer containing DR-19 as a nonlinear optically active chromophore with naphthalene group have been synthesized. The other polymer containing DR-19 with photo-cross-linkable group (cinnamylidenemalonic acid) have been syntheaized.
The results show that the polymer containing naphthalene group have good processibility and can be easily casting as thin film. Those polymers have no crystalline and exhibit good opacity. Because of the polymers containing naphthalene do not have high Tg, so we have used cinnamylidenemalonic acid instead of naphthalene group . In order to prevent rotation and translation of the chromophore molecules. , we have synthesized and characterized the polymer containing crosslinkable group.
In order to make the polymer consist of chromophores oriented. We used corona poling technique to form noncentrosymmetry. The electro-optical (EO) measurement was set up by a reflection method. The EO coefficient r33 range from 1.75~3.17pm/V was obtained after poling . The measurement were not expected values .Because of the thin film of NLO material deposited in vacuum. We supposed the high temperature environment disturbed the orientation of chromophores. It made the chromophores relaxation., and reduced the EO value.

中文摘要
英文摘要
圖目錄

第一章 緒論1
1-1非線性光學概述1
1-2非線性光學的微觀現象1
1-3波克效應（Pockels effects）4
1-4分子結構的設計5
1-5有機與無機非線性光學材料的比較9

第二章 文獻回顧10
2-1 非線性光學材料的發展10
2-2非線性光學材料的性質11
2-3 非線性光學材料的應用12
2-4材料實際應用的條件13
2-5二次非線性光學材料的類型15
2-6 研究動機19

第三章 實驗部分20
3-1實驗儀器20
3-2實驗藥品22
3-3實驗步驟23
3-4實驗儀器的裝置與簡介29
第四章 結果與討論35
4-1 MNR的分析鑑定35
4-2 IR的分析鑑定37
4-3 NLO發色團（DR-19）部分的討論38
4-3-1發色團之非線性光學性質38
4-3-2液晶相的討論39
4-4高分子部分的探討40
4-4-1熱性質的敘述40
4-4-2高分子成膜性的探討43
4-4-3高分子薄膜電暈極化（Corona poling）之條件44
4-4-4 極化前後在紫外/可見(UV/Vis)光圖譜的討論45
4-5電光係數（r33）的測定探討46
4-6熱穩定性的探討47
4-7光架橋高分子的討論48
4-6-1紫外/可見光譜儀的討論49
4-6-2 UV光的照射時間討論49
4-8混摻系統51
4-8-1熱分析的敘述51
4-8-2分子間的作用力52
4-8-3混摻濃度的探討53

第五章 結論74
參考文獻76

參考文獻
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