论文标题
二乙基连接的蒽聚合物的地表合成中的空间障碍
Steric hindrance in the on-surface synthesis of diethynyl-linked anthracene polymers
论文作者
论文摘要
可以通过表面合成在金属底物上有效地获得混合SP-SP2结构。前体和底物的选择都会影响过程的有效性以及形成的结构的稳定性。在这里，我们证明，将基于蒽的分子作为前体，托管Sp碳链的聚合物的AU（111）形成受芳族基团之间的空间阻滞的影响。特别是，通过扫描隧道显微镜和密度函数理论计算，我们表明有机金属结构的去度量会诱导相邻聚合物的横向分离，从而阻止了有序域的形成。
Hybrid sp-sp2 structures can be efficiently obtained on metal substrates via on-surface synthesis. The choice of both the precursor and of the substrate impacts on the effectiveness of the process and the stability of the formed structures. Here we demonstrate that using anthracene-based molecules as precursor, the formation on Au(111) of polymers hosting sp carbon chains is affected by the steric hindrance between aromatic groups. In particular, by scanning tunneling microscopy and density functional theory calculations we show that the de-metalation of organometallic structures induces a lateral separation of adjacent polymers preventing the formation of ordered domains.
