- 學位論文
熱交聯電荷傳輸材料的設計、合成與應用
Design, Synthesis, and Exploitation of Thermally Cross-Linkable Charge Transporting Materials
摘要
本論文的研究目的，在於探討並開發可用於濕式製程的可熱交聯電荷傳輸材料，以投入有機光電領域，如螢光或磷光有機發光二極體，或有機太陽能電池…等應用。 為了開發濕式製程在有機光電應用的解決方案，我們設計並合成適合用作濕式塗佈的小分子電荷傳輸材料，再以分子間的交聯反應將它們轉換為高分子薄膜，冀望能克服多層結構之有機光電應用於濕式製程中的問題。在本論文中，我們選定苯乙烯為可熱交聯的官能基團，將其修飾在具有電荷傳輸能力的有機材料上，希望能藉其不須添加起始劑即可在高溫下自行啟動分子間熱交聯的特性，達到抗溶劑侵蝕的效果；且經由適當的分子設計，我們能夠讓交聯後的材層盡可能保存小分子前驅物的性質。 我們成功合成了包含電洞傳輸材料、高三重態能量之電洞傳輸材料，及具有電洞傳輸性質的主體材料，和電子傳輸材料…等數個系列的可熱交聯分子，它們多具有良好的材料成膜性質、熱穩定性與可達10^(-4) cm^2/Vs數量級之電洞傳輸率。
並列摘要
The overall theme of this dissertation is to examine thermally cross-linkable charge transporting materials for their potential use in solution-processable organic light-emitting diodes (OLEDs) and solar cells. In order to overcome the interfacial mixing problem, the approach is the use of an organic-soluble precursor that becomes insoluble through crosslinking reaction. Low temperature-curing styrene is moe attractive for long-term application. Styryl moiety has the advantages because it is easier to be synthesized and can undergo mild thermal polymerization in the absence of an initiator. With such a concept, the design and synthesis of various functional materials including thermally crosslinkable hole injection materials (HIMs) and/or hole-transport materials (HTMs), high-triplet-energy hole-transport materials, hole-transporting–type host materials, and electron transport materials (ETMs) were systematically performed.