Symmetric Mixed Sulfur–Selenium Fused Ring Systems as Potential Materials for Organic Field‐Effect Transistors
作者:Brigitte Holzer、Barbara Dellago、Ann‐Katrin Thamm、Thomas Mathis、Berthold Stöger、Ernst Horkel、Christian Hametner、Bertram Batlogg、Johannes Fröhlich、Daniel Lumpi
DOI:10.1002/chem.201903958
日期:2020.3.2
A reliable synthetic protocol toward a series of fused chalcogenopheno[1]benzochalcogenophene (CBC) building blocks was developed based on a Fiesselmann reaction. The obtained CBC units were applied in McMurry and Stille coupling reactions toward symmetric regioisomeric ene-linked dimers. These π-conjugated compounds were characterized regarding their photophysical and electrochemical properties and
基于Fiesselmann反应,开发了一种可靠的合成方案,适用于一系列融合的硫族硫属元素[1]苯并硫属元素金属(CBC)构建基块。将获得的CBC单元应用于McMurry和Stille偶联反应中,用于对称的区域异构烯连接的二聚体。这些π-共轭化合物的光物理和电化学特性得到了表征,并且被证明是与基于硫的类似物相比具有减小的HOMO-LUMO间隙的材料。X射线单晶衍射实验表明,强分子间硒-硒和硒-碳相互作用取决于结合的硒原子的位置和数量。可以观察到良好的场效应晶体管性能,电荷载流子迁移率高达4×10-3 cm2 V-1 s-1,并且开/关比高。