| 作者： | Junjie Zhang+,[a] Chun-ran Chang+,[b] Biao Yang,[a] Nan Cao,[a] ChenchengPeng,[a]Haiming Zhang,[a] Dan-Tam D. Tang,[c] Frank Glorius,[c] Gerhard Erker,[c]Harald Fuchs,[d] Qing Li,*[a] and Lifeng Chi*[a] |
| 单位： | [a] J. Zhang,+ B. Yang, N. Cao, C. Peng, Dr. H. Zhang, Dr. Q. Li, Prof. L. Chi, Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials &devices, Soochow University, Suzhou 215123 (P. R. China) [b] Dr. C.-r. Chang+, Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049 (P. R. China) [c] D.-T. D. Tang, Prof. F. Glorius, Prof. G. Erker, Organisch-Chemisches Institut, Universität Münster Corrensstrasse 40, 48149 Münster (Germany) [d] Prof. H. Fuchs, Physikalisches Institut, Universit Münster Corrensstrasse 40, 48149 Münster (Germany) [+] These authors contribute equally to this work. |
| 摘要： | Direct coupling of alkanes via C-H activation ofterminal methyl groups has acquired tremendous interestsboth scientifically and technically. Herein we present the results of linear alkane-coupling at the step edges of Cu surfaces at modulated temperatures. Combining the observationsof scanning tunneling microscopy (STM) with density functional theory plus dispersion (DFT-D) calculations, we elucidate the mechanism of the reaction and demonstrate thatthe low activation barrier relies on heterogeneous catalysisat the upper step edges, where low-coordinated surfaceatoms are present. We further reveal the generality of the reaction, so that it can be applied on the step edges of different facets of surfaces. |
