含二脲有機自組裝分子之合成及奈米結構之鑑定與應用

本論文中，我們調控核心共軛結構的能階，設計出以芴之衍生物為發光中心的二脲自組裝分子，分別為放藍光的T2BUdiC12、綠光的BTDFBUdiC12、紅光的TPDFBUdiC12，藉由掃描式電子顯微鏡（SEM）與穿透式電子顯微鏡（TEM）鑑定，分子可於四氫呋喃和甲醇混合之溶劑中自組裝形成實心奈米球。而透過共聚焦雷射掃描螢光顯微鏡（CLSM）我們觀察到二脲自組裝分子形成的螢光奈米球。此外我們製作出具有親疏水性網格的圖樣化基板，並將二脲自組裝分子溶液灑佈於圖樣化基板上。透過SEM及CLSM的鑑定，我們觀察到二脲自組裝分子在圖樣化基板上選擇性分布於疏水區，且奈米球全數瓦解轉而在該區形成分子膜。透過改變光罩為網格較密集之銅網製作出親疏水區面積相當的圖樣化基板，我們觀察到二脲自組裝分子在其上親疏水區域分布的選擇性提升。另外我們也以改變溶劑組成或加入溶劑進行退火來操控二脲自組裝分子在圖樣化基板上的分布，發現兩種方式都會使其在圖樣化基板上分布的選擇性產生改變。

關鍵字

自組裝；奈米球；二脲；圖樣化基板；奈米製作

並列摘要

In this thesis, we designed and synthesized three emissive fluorene derivatives, T2BUdiC12, BTDFBUdiC12 and TPDFBUdiC12, on which the self-assembling bis-urea motifs were introduced. By the use of electron microscopes (SEM and TEM) and confocal laser scanning microscope (CLSM), the molecules were found to spontaneously assemble into nano-sphere in specific solvent compositions. Furthermore, the selective distribution of bis-urea molecules on patterned substrates was investigated. We immersed patterned silicon wafer substrates into bis-urea nano-spheres solution for several minutes (or dropped-casting the solution onto slides). Under the characterization of SEM and CLSM, bis-urea molecules showed selective distribution to the hydrophobic zones on patterned silicon or slide substrates. Also, we found the tendency of bis-urea molecules to hydrophobic zones could be changed by changing solvent composition or introducing solvent annealing.

並列關鍵字

self-assembly ； nano-sphere ； bis-urea ； patterned substrate ； nano fabrication

參考文獻

(1) Whitesides, G. M.; Grzybowski, B. Science 2002, 295, 2418.

(2) Whitesides, G. M.; Boncheva, M. Proc. Natl. Acad. Sci. USA 2002, 99, 4769.

(5) Lehn, J. M. Pure Appl. Chem. 1978, 50, 871.

(6) Jonathan W. Steed, J. L. A. Supramolecular Chemistry, 2nd Edition; John Wiley & Sons, Inc.: Chichester, 2009.

(7) Veaceslav Coropceanu, J. C., Demetrio A. da Silva Filho ,Yoann Olivier, Robert Silbey, and Jean-Luc Brédas Chem. Rev. 2007, 107, 926.

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含二脲有機自組裝分子之合成及奈米結構之鑑定與應用

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