Linear Alkane Polymerization on Au-Covered Ag(110) Surfaces
Linear Alkane Polymerization on Au-Covered Ag(110) Surfaces
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Au 覆盖的 Ag(110) 表面上的直链烷烃聚合
DOI：
10.1021/acs.jpcc.8b09533
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发表时间：
2018-10-25
影响因子：
3.7
通讯作者：
Zhong, Dingyong
中科院分区：
文献类型：
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作者：
Cai, Zeying;Pang, Rongsheng;Zhong, Dingyong
由于烷烃碳氢键的惰性，有效地利用烷烃作为前驱体来实现各种化学反应过程具有挑战性。本文报道了线性烷烃在au覆盖的Ag（110）表面上的选择性C-H活化和C-C偶联反应。基于密度泛函理论计算，沉积在Ag（110）表面的具有几个原子层厚度的薄金膜类似于Au（110）表面的烷烃C-H键激活。通过扫描隧道显微镜（STM），我们观察到，在高温下，烷烃分子从Ag（110）表面解吸，而不是在非合金Au（110）上的线性C-C耦合。Au（110）表面的特征缺失行（1 x 2）重建是通过类似于20 ML (
Efficiently utilizing alkanes as the precursors to realize various chemical reaction processes is challenging due to the inertness of alkane C-H bonds. We report here the selective C-H activation and C-C coupling reaction of linear alkanes on Au-covered Ag(110) surfaces. Based on density functional theory calculations, thin gold films with a thickness of several atomic layers deposited on Ag(110) resemble the bulk Au(110) surface for alkane C-H bond activation. By using scanning tunneling microscopy (STM) we have observed that, instead of linear C-C coupling on unalloyed Au(110), alkane molecules desorb from Ag(110) surfaces at elevated temperatures. The featured missing-row (1 x 2) reconstruction of Au(110) surfaces has been obtained by deposition of similar to 20 ML (