具近紅外光響應之新型材料設計、合成、鑑定與應用

近年來，近紅外光波段的有機光電材料逐漸受到注目，在相關領域的應用也扮演著十分重要的地位，像是在太陽能電池中可以捕捉更多的光子，以此來提高效率，亦或是利用近紅外光波段對於組織有較深的穿透度，使之可以應用在顯影相關或是光照療法上，本論文選用強拉電子性與強醌態性質的電子受體，搭配不同的推電子基設計出一系列吸光或放光在近紅外光區的材料，並進行應用及探討。　　在論文的第一章，會簡述有機光電材料運用在太陽能電池、有機發光二極體、生醫領域的發展及其基本運作原理跟需求，第二章則是以推電子基－核心拉電子基－末端拉電子基 (即D-A-A架構) 作為設計理念，以此得到吸收在近紅外光波段的分子，並把其應用在蒸鍍型太陽能電池，第三章則是以D-A-D的架構作為設計，並選用苯并噻吩(benzothiophene,BTh)或是噻吩噻二唑(thienothiadiazole,TTD) 作為核心拉電子結構，搭配不同設計策略的推電子基去做出一系列的放光在近紅外光波段的材料，並運用在有機發光二極體中的放光客體，第四章則同樣利用D-A-A的架構去設計一系列的吸收在近紅外光波段的分子，並將其做成奈米粒子後，運用在光照療法上，並去探討光熱轉換率以及光動力療法效率與結構之關係。

關鍵字

材料；近紅外光；太陽能電池；有機發光二極體

並列摘要

In recent years, organic electronic materials with near-infrared (NIR) response have attracted special interests, and their applications also play a very important position, especially the materials absorb near-infrared wavelength have a deeper tissue penetration, so it can be used in bio-imaging and phototherapy. 　　In Chapter 1, it briefly described the development of organic electronic materials used in organic solar cells, organic light-emitting diodes, and biomedical fields. In Chapter 2, new molecules were designed with the donor-acceptor-acceptor (D-A-A) architecture, which utilizes pyridine or benzothiophene as donor and strong electron-withdrawing group to achieve NIR absorption in organic photovoltaic (OPV) application. In Chapter 3, it is divided into two part. The first part uses benzothiophene (BTh) as the acceptor to design a series of fluorescent materials with superior fluorescent quantum yield. The second part uses thienothiadiazole (TTD) as core to make a series of materials with emissions in NIR region and good PLQY. These new molecules were used as guest-emitters in the organic light-emitting diode. In Chapter 4, we use the D-A-A architecture to design a series of molecules with NIR absorption and make them into nanoparticles, then discuss the relationship between chemical structure and photothermal and photodynamic therapy efficiency structure in biological application.