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標題: | 具紅外光響應之新穎材料設計、合成與鑑定 The Design, Synthesis and Characterization of Novel Materials with Near Infrared Response |
作者: | Yuan-Chih Lo 羅元志 |
指導教授: | 汪根欉(Ken-Tsung Wong) |
關鍵字: | 有機發光二極體,有機太陽能電池,近紅外光, organic light emitting diode,organic photovoltaic,near-infrared, |
出版年 : | 2020 |
學位: | 博士 |
摘要: | 在近二十年間,有機光電材料和相關元件的發展逐漸受到重視。特別在近紅外光波段中,由於近紅外光對於生物組織具有良好的穿透性,因此開發新型具紅外光響應的光電材料在生物顯影的相關研究及應用中具有十分重要的地位。在本論文中,將透過對芳香化結構以及雙自由基的調整,設計一系列可吸收或放出近紅外光的分子,並整理出芳香化結構以及雙自由基結構對於能隙的關聯性。 在此論文的第一章中,先簡述有機光電材料及元件的基本運作原理和方式以及相關的需求。在第二章中,分別設計出點對稱以及不對稱的吸光材料,並鑑定其結構與光物理性質的相關性。此外,也將其中的幾項材料作為太陽能電池中的電子予體材料,並探討其光電轉換效率和結構的關聯性。在第三章中,透過核心結構的調整以及多樣的設計策略,合成出具有不同能隙的放光材料,部分材料也作為有機發電二極體中的放光客體,實現高效率的近紅外光有機發電二極體元件。而在第三章的末段,透過整合第三章各節的內容,歸納出芳香化結構以及雙自由基結構的調整及其與能隙的關聯,並其許此結果能作為後續材料設計的基石。 Recently, organic electronic devices show the increasing importance. Among them, the rising demand for the materials/devices with near infrared (NIR) response arouse the relating research interests, especially their potential in bio-imaging and bio-sensing. In Chapter 1, a brief introduction of organic electronics and the importance of the applications with NIR response were addressed. In Section 2-1, indeno[1,2-b]fluorene (InF)-based small molecules with quinoidal structure were synthesized and served as electron donors in organic photovoltaic (OPV) applications. In Section 2-2, InF-based small molecule was synthesized and served as the nonfullerene acceptor in OPV device. In Section 2-3, four donor-acceptor-acceptor’ (D-A-A’)-configured molecules adopting NBT as electron-withdrawing group with different electron-donating groups were synthesized and served as electron donors in OPV applications. In Section 2-4, two NBT- and TQ-based D-A-A’-configured molecules with reduced energy gap were synthesized and served as electron donors in OPV applications. In Chapter 3, to investigate the designing strategies for the molecules with reduced energy-gap, fluorophores configured as D-A-D and D-A-A’ skeletons with varying central A group were synthesized. By observing the emission shifting, one can be deduced that the diradical character of the central A group plays a crucial role determining the energy gap, providing an efficient designing principle to achieve emitter with NIR emission and beyond. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/18643 |
DOI: | 10.6342/NTU202002988 |
全文授權: | 未授權 |
顯示於系所單位: | 化學系 |
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U0001-1108202017361700.pdf 目前未授權公開取用 | 39.65 MB | Adobe PDF |
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