頁籤選單縮合
題 名 | Fabrication and Morphology of Mixed Copper Tetra-tert-Butyl Phthalocyanine/Arachidic Acid Langmuir-Blodgett Films=銅阩花青/二十碳酸混合Langmuir-Blodgett膜的製備及表面形態 |
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作 者 | 許靜雯; 張鑑祥; 李玉郎; 楊毓民; 馬哲儒; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 33:6 2002.11[民91.11] |
頁 次 | 頁573-580 |
分類號 | 460.023 |
關鍵詞 | 銅阩花青; 二十碳酸; Langmuir-Blodgett膜; Langmuir-blodgett film; Mixed LB film; Mixed monolayer; Phthalocyanine; Transfer promoter; |
語 文 | 英文(English) |
中文摘要 | 此研究藉由Langmuir-Blogett (LB)沈積轉移率的量測及LB膜形態的原子力顯微鏡觀察,探討在親水性玻璃基板及經矽烷改質過的疏水性玻璃基板,銅?花青/二十碳酸混合LB膜的沈積行為。當在銅?花青單分子層中添加20或50 mol%二十碳酸,並進行LB膜的連續沈積時,所得的沈積品質並不佳,這是語顧在向下進行沈積時,已被沈積的分子層會離基板而回到氣液界面上。若在向上拉起積後均靜置一小時乾燥再進行沈積,則可減緩已沈積LB膜的剝落情形,而得到雖不完整但為Y型的LB膜。然而。藉由相同的沈積程序,則可在經矽烷改質過的玻璃基板上,製備具有良好沈積品質的Y型銅?花青/二十碳酸混合LB膜。此外,原子力顯微鏡的分析顯示20 mol%二十碳酸的存在,可使得銅?花青LB膜中的聚集變小。此一結果說明二十碳酸不僅可促進銅?花青分子層的LB轉移,且有助於銅?花青LB膜均勻性。但若將二十碳酸的量提高到50 mol%,在混合LB膜中的聚集則明顯變大,這可能與二十碳酸分子本身的聚集特性有關。 |
英文摘要 | Deposition characteristics of mixed copper tetra-tert-butyl phthalocyanine (CuTTBc)/arachidic acid Langmuir-Blodgett (LB) films on hydrophilic glass and hydrophobic silanized-glass substrates were investigated. Transfer ratios for the LB deposition were measured, and morphology of the LB films was analyzed by atomic force microscopy (AFM). With the addition 20 or 50 mol% arachidic acid in a CuTTBPc monolayer, poor deposition quality was found for the continuous LB transfer on a glass substrate due to the return of the deposited layer to the air/water interface during down-stroke deposition. With a l-h drying period at the end of up-stroke deposition, the extent of peeling of the films became less significant, and imperfect Y-type LB films may be prepared. However, by the same deposition approach, Y-type mixed CuTTBPc/arachidic acid LB films with good deposition quality could be fabricate on a silanized-glass substrate. Moreover, the AFM analysis demonstrated that the existence of 20 mol% arachidic acid caused aggregates in a CuTTBPc LB film to become smaller. This result suggests that arachidic acid not only promoted the LB transfer of a CuTTBPc layer, but also had a dispersion effect on the film. With a higher archidic acid molar fraction of 0.5, aggregates in the mixed LB film became larger, which may be related to the accumulation characteristic of arachidic acid. |
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