Core-Fluorinated Naphthalene Diimides: Synthesis, Characterization, and Application in n-Type Organic Field-Effect Transistors

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• 作者：Zhongyi Yuan ; Yingjie Ma ; Thomas Ge?ner ; Mengmeng Li ; Long Chen ; Michael Eustachi ; R. Thomas Weitz ; Chen Li ; Klaus Müllen
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：February 5, 2016
• 年：2016
• 卷：18
• 期：3
• 页码：456-459
• 全文大小：324K
• ISSN：1523-7052

文摘

A series of difluoro- and tetrafluoro-substituted naphthalene diimides (NDIs) were synthesized by halogen exchange reactions of corresponding bromo-NDIs with CsF in dioxane. Two strong electron acceptor molecules 6 and 8 with low-lying LUMO energy levels of ?4.27 and ?4.54 eV were obtained, starting from tetrafluoro-NDI. Organic field-effect transistors (OFETs) based on these fluorinated NDIs were fabricated by vapor deposition, exhibiting n-channel field-effect character under ambient conditions with the highest mobility of 0.1 cm² V^–1 s^–1.