2010-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/712143摘要：軟性奈米薄膜如有機太陽能薄膜電池、有機電晶體等具低成本易加工等特性，故深具發展潛力，然而目前有機奈米薄膜相較於傳統薄膜效率仍偏低，如何提升效率是當前的主要課題，而適當控制薄膜內部的微結構會是一個有效的途徑。嵌狀共聚物具週期性的微觀相分離結構，若能發展出有效控制其微結構的方式，如規整度、尺寸、方向性等，將非常適合於薄膜的應用。本計畫目的即在於以嵌段共聚物為基礎，用新發展的超分子概念來調控薄膜微結構與功能，設計出新型奈米薄膜，期能有效提升薄膜效率甚至發展新的應用。超分子是指分子間以非共價鍵方式自組裝所形成的複合體，依此概念，具特殊官能基與功能的分子或奈米微粒將非常容易加入嵌段高分子中以提升其功能性，而可省去合成新高分子的麻煩。目前雖然已發展出非常多的嵌段共聚物超分子系統，但還沒有一個有效的方式可控制薄膜中微結構的方向性。本計畫首先將發展以基板表面改質的技術來調控超分子薄膜的微結構，皆下來將合成一系列具光敏、導體、半導體性質的小分子與奈米微粒，將其以氫鍵與嵌段高分子結合後製成薄膜，並利用發展出的技術來調控其分散與方向。透過本計畫的進行，我們預期達成兩項目標：(1) 獲得如何調控薄膜方向性的知識與技術；(2) 製備具高規整性與方向性的多功能複合薄膜。這不僅極具學術價值，更可為新一代的奈米材料奠定基礎。<br> Abstract: Thin films formed by organic materials, due to their superior processability and low costs, are potential candidates for replacing conventional silicon-based thin films, such as solar cells and transistors. One major difficulty of organic thin films is that the efficiency is relatively low and a number of studies have been dedicated to improving their efficiency, among which one effective way is the control of their nanostructures, such as domain size and orientation. Block copolymers (BCPs) can phase separate into well-defined arrays of microdomains and thus are good materials for such applications. In this proposal, we plan to adopt the concept of BCP-based supramolecular assembly to manipulate the nanostructures and functionalities of thin films. BCP-based supramolecular assemblies can be readily constructed by attaching additives to the blocks via non-covalent bonds, which can circumvent some challenges of synthesizing new polymers. Many BCP-based supramolecular systems have been developed but a general method to manipulate their nanostructures in thin films is still absent. We propose to firstly develop the techniques of surface modifications to control the orientation of microdomains in thin films and subsequently, we will synthesize a series of photosensitive, conducting and semiconducting small molecules and nanoparticles which will then be incorporate into BCPs. Our goals are to (1) obtain the knowledge of nano-scaled orientation control and (2) fabricate new classes of multi-functional composite thin films. The studies described in this proposal are not only significant from scientific standpoints but also potentially practical in a variety of applications.