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研究生:許靜雯
研究生(外文):Ching-Wen Sheu
論文名稱:二十碳酸及基板改質對酞花青LB膜沈積行為的影響
論文名稱(外文):The influence of arachidic acid and substrate surface modification on the deposition of phthalocyanine LB films
指導教授:馬哲儒馬哲儒引用關係張鑑祥張鑑祥引用關係
指導教授(外文):Jer-Ru MaaChien-Hsiang chang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:化學工程學系碩博士班
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:110
中文關鍵詞:LB膜原子力顯微鏡轉移率促進劑
外文關鍵詞:atomic force microscopytransfer promotertranfer ratioLB film
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本研究主要是利用Langmuir-Blodgett (LB)沈積技術,將氣/液界面上的四第三丁基銅酞花青(tetra-tert-butyl-copper-phthalocyanine, CuTTBPc)單分子層轉移至三種不同的固體基板(玻璃基板、經二甲基二氯矽烷及經十二烷基三氯矽烷表面改質的玻璃基板)上,藉由沈積轉移率與原子力顯微鏡對LB膜表面形態的量測,探討促進劑二十碳酸與基板的表面改質對CuTTBPc LB膜沈積的影響。
結果顯示促進劑二十碳酸的加入的確有助於氣/液界面上CuTTBPc單分子層的穩定性,由沈積轉移率進一步發現,想要得到一沈積品質良好的CuTTBPc LB膜,玻璃基板的表面改質與促進劑二十碳酸的加入是必須同時進行的。在玻璃基板上進行沈積時,雖然二十碳酸的添加有利於CuTTBPc單分子層的轉移,但所沈積的LB膜品質依然不佳。在兩種經表面改質的玻璃基板上進行CuTTBPc LB膜的沈積,則發現當二十碳酸的添加量為20 mol%時,可以得到一良好品質的Y型膜。然而,當二十碳酸的添加量增加到50 mol%時,此時LB膜沈積品質的好壞似乎由二十碳酸與基板之間的附著力所主導。
利用原子力顯微鏡進行LB膜表面形態的觀察,可以發現當添加二十碳酸的量為20 mol%時,可以使得原本純CuTTBPc LB膜中的聚集體變小,推測此時二十碳酸分子是均勻分散於CuTTBPc 分子層中,而使得CuTTBPc聚集體變小。然而,當添加二十碳酸的量增加為50 mol%時,此時LB膜中的聚集體反而變大,可能是因為二十碳酸的自行聚集所造成。
This study investigated the influence of transfer promoter, arachidic acid, and substrate surface modification on the deposition of tetra-tert-butyl-copper phthalocyanine (CuTTBPc) Langmuir-Blodgett films. CuTTBPc monolayers with or without arachidic acid at the air/water interface were transferred to three kinds of substrates (glass, glass hydrophobicized by dichlorodimethylsilane, and glass hydrophobicized by dodecyltrichlorosilane) by the LB deposition technique. Transfer ratios for the deposition were measured, and the surface morphology of the LB films was then analyzed by atomic force microscopy.
The results demonstrated that the presence of arachidic acid indeed improved the stability of a CuTTBPc monolayer at the air/water interface. It was further found from the transfer ratios that both surface modification of a glass substrate and the addition of the transfer promoter, arachidic acid, were required to obtain a CuTTBPc LB film with excellent deposition quality. For the deposition on a pure glass substrate, although the LB transfer of a CuTTBPc monolayer was improved by the presence of arachidic acid, the deposition quality was not good enough. For the preparations of CuTTBPc LB films on hydrophobic silanized-glass substrates, perfect Y-type multilayer LB films could be fabricated with the addition of 20 mol% arachidic acid. However, when the molar fraction of arachidic acid was increased to 0.5, the deposition quality of the LB films was then determined by the adhesion between arachidic acid and the substrate surface.
Based on the morphology analysis of the LB films by atomic force microscopy, it was found that aggregates in a CuTTBPc LB film became smaller when 20 mol% of arachidic acid was added. This result suggests that the arachidic acid molecules were homogeneously distributed in the CuTTBPc monolayer, resulting in smaller CuTTBPc aggregates. However, when the molar fraction of arachidic acid was increased to 0.5, the aggregates in the LB films became larger, most likely due to the accumulation of arachidic acid molecules.
摘要 I
英文摘要 II
誌謝 IV
目錄 V
表目錄 VII
圖目錄 VIII
符號說明 XV
第一章 緒論 1
1-1 前言 1
1-2 研究動機與目的 1
第二章 文獻回顧 3
2-1 Langmuir單分子層的形成 3
2-2 Langmuir單分子層的穩定性 4
2-3 LB膜的製作 4
2-4 LB膜的型式 5
2-5 自聚性分子膜 6
2-6 �@花青分子 9
2-7 �@花青LB膜 10
2-8 促進劑在�@花青LB膜的應用 14
第三章 實驗 27
3-1 實驗材料與藥品 27
3-2 實驗裝置與測量原理 27
3-2-1 Langmuir 槽 27
3-2-2 原子力顯微鏡 28
3-3 實驗步驟 28
3-3-1 單分子層的等溫線與鬆弛曲線 28
3-3-2 固體基板的清洗及製備 29
3-3-3 LB膜的製作 30
3-3-4 原子力顯微鏡的測量 31
第四章 結果與討論 35
4-1 促進劑對�@花青單分子層行為的影響 35
4-1-1 單分子層的等溫線 .35
4-1-2 單分子層的鬆弛曲線 37
4-2 二十碳酸對�@花青LB膜沈積的影響 37
4-2-1 玻璃基板 37
4-2-2 矽烷改質基板 41
4-3 不同基板表面形態的觀察 47
第五章 結論 100
第六章 參考文獻 102
自述 110
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