含末端炔類分子之合成及其在電極表面修飾的應用

Synthesis of Functional Alkyne Molecules and Application for Electrode Surface Modification

鄭莘卉(Hsin-Hui Cheng)

指導教授 ： 汪根欉

國立臺灣大學/理學院/化學研究所/碩士(2013年)

https://doi.org/10.6342/NTU.2013.01833

摘要

自從發現分子有自組裝（self-assembly）能力後，分子自組裝單層膜（self-assembled monolayer, SAMs）的探討與研究開始引起關注。本論文設計與合成一系列的末端炔類分子，分別為Cz1、Triph2、Diphpy3，並利用速配化學（click chemistry）將末端炔類分子和修飾上疊氮分子單層膜的ITO表面反應。再者，藉由末端炔類分子其另一端具有化學活性的官能基團，可於電極表面進行後修飾行為。
本文中我們使用氧化還原法將上述完成的自組裝單層膜進行電化學聚合，以咔唑（carbazole）基團為例，利用循環伏安法即可在低電位下進行電致聚合反應，並以原子力顯微鏡和X光光電子光譜儀等儀器鑑定修飾過的ITO表面。

除了單層膜的表面修飾外，我們也應用了微接觸顯影技術（microcontact printing, µCP）進行表面區域性修飾，並以表面電位式顯微鏡（surface potential microscope, SPoM）進行鑑定，成功觀測到表面呈現柵狀圖形，如下所示。

關鍵字

末端炔類分子 ； 電極表面修飾

並列摘要

In this work, the simple terminal alkyne molecule, Cz1; Triph2; Diphpy3, was used to modify the ITO surfaces. As has been studied, carbazole is easily electropolymerized by cyclic voltammetry at low oxidation potential. After electroactive self-assembled monolayers (SAMs) of carbazolyl alkanesilane are successfully designed and applied to modify ITO electrode, the analysis of the SAMs by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) provide consistent results indicating the SAM molecules are packed and standing upright on the ITO surface.
In addition, we described the microstructured immobilization of molecule Cz1 on azide-terminated SAMs on ITO substrates by microcontact printing (µCP). The immobilization reaction by µCP was verified by surface potential microscopy (SPoM). Under optimized conditions all reactions lead to dense microarrays of addition products within hours of printing time.

並列關鍵字

Alkyne Molecules ； Electrode Surface Modification

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