J. Am. Chem. Soc.: Hierarchical Dehydrogenation Reactions on a Copper Surface

Title：

Hierarchical Dehydrogenation Reactions on a Copper Surface

Authors：

Qing Li^1,‡, Biao Yang^1,‡, Jonas Björk², Qigang Zhong^1,3, Huanxin Ju⁴, Junjie Zhang¹, Nan Cao¹, Ziliang Shi⁵, Haiming Zhang¹, Daniel Ebeling³, Andre Schirmeisen³, Junfa Zhu⁴, Lifeng Chi^1,*

Institutions：

¹Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials &devices Soochow University, Suzhou 215123, China

²Department of Physics, Chemistry and Biology, IFM, Linköping University, 58183 Linköping, Sweden

³Institute of Applied Physics (IAP), Justus Liebig University Giessen, Heinrich-Buff-Ring, 16, 35392 Giessen, Germany

⁴National Synchrotron Radiation Laboratory and Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei, Anhui 230029, China

⁵The Center for Soft Condensed Matter Physics & Interdisciplinary Research, Department of Physics, Soochow University, Suzhou 215006, China

Abstract：

Hierarchical control of chemical reactions is being considered as one of the most ambitious and challenging topics in modern organic chemistry. In this study, we have realized the one-by-one scission of the X-H bonds (X=N and C) of aromatic amines in a controlled fashion on the Cu(111) surface. Each dehydrogenation reaction leads to certain metal-organic supramolecular structures, which were monitored in single-bond resolution via scanning tunneling microscopy and non-contact atomic force microscopy. Moreover, the reaction pathways were elucidated from X-ray photoelectron spectroscopy measurements and density functional theory calculations. Our insights pave the way for connecting molecules into complex structures in a more reliable and predictable manner, utilizing carefully tuned step-wise on-surface synthesis protocols.

IF：

13.858

Link：

https://pubs.acs.org/doi/10.1021/jacs.7b12278