A diazatriptycene‐based tetrapodal scaffold with thiol anchors enforces a nearly upright orientation of functional groups, introduced to its quinoxaline subunit, with respect to the substrate upon formation of self‐assembled monolayers (SAMs). Substitution with electron‐withdrawing fluorine and cyano as well as electron‐rich dimethylamino substituents allows tuning of the molecular dipole and, consequently, of the work function of gold over a range of 1.0 eV (from 3.9 to 4.9 eV). The properties of the SAMs are comprehensively investigated by infrared reflection absorption spectroscopy, near edge X‐ray absorption fine structure spectroscopy, and X‐ray photoelectron spectroscopy. As prototypical examples for the high potential of the presented SAMs in devices, organic thin‐film transistors are fabricated.

中文翻译：

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用于n型有机薄膜晶体管中静电偶极工程的功能化四足二氮杂肽

在形成自组装单分子膜（SAMs）时，带有硫醇锚的基于二氮杂并四苯的四足脚手架可将引入其喹喔啉亚基的官能团几乎垂直定向。用吸电子的氟和氰基以及富电子的二甲基氨基取代基取代可以调节分子偶极子，从而调节金的功函数在1.0 eV（从3.9到4.9 eV）范围内。通过红外反射吸收光谱，近边缘X射线吸收精细结构光谱和X射线光电子能谱全面研究了SAM的特性。作为所展示的SAM在设备中具有很高潜力的典型示例，制造了有机薄膜晶体管。