Synthesis and Structural Analysis of Thiophene-Pyrrole-Based S,N-Heteroacenes

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• 作者：Christoph Wetzel ; Amaresh Mishra ; Elena Mena-Osteritz ; Andreas Liess ; Matthias Stolte ; Frank Würthner ; Peter B?uerle
• 刊名：Organic Letters
• 出版年：2014
• 出版时间：January 17, 2014
• 年：2014
• 卷：16
• 期：2
• 页码：362-365
• 全文大小：291K
• ISSN：1523-7052

文摘

Fused S,N-heterohexacene 4 was synthesized by applying Pd-catalyzed tandem Buchwald鈥揌artwig coupling and further functionalized to corresponding acceptor-capped derivatives 5 and 6 showing bond length equalization in the 蟺-conjugated backbone and intense optical transitions. Organic thin film transistors (OTFTs) based on a vacuum-deposited film of 6 exhibit p-channel charge-carrier mobilities as high as 0.021 cm² V^鈥? s^鈥? and current on/off ratios of 10⁵.