Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 79: Surface Reactions and Heterogeneous Catalysis 3
O 79.4: Vortrag
Freitag, 9. September 2022, 11:30–11:45, H4
Real-space Imaging of Unprecedented Phenyl Group Migration Reaction on Metal Surfaces — •Zilin Ruan1,2, Baijin Li2, Shijie Sun2, Yong Zhang2, Lei Gao3, Jianchen Lu2, Michael Gottfried1, and Jinming Cai2 — 1Department of Chemistry, Philipps University Marburg, Hans-Meerwein-Straße 4, 35037 Marburg (Germany) — 2Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093 (China) — 3Department of Chemistry, Philipps University Marburg, Hans-Meerwein-Straße 4, 35037 Marburg (Germany)
We report on-surface identification and visualization of an unprecedented and universal phenyl group migration reaction of 1,4-dimethyl-2,3,5,6-tetraphenyl benzene (DMTPB)a precursor on Au(111), Cu(111) and Ag(110) substrates by a combination of bond-resolved scanning tunneling microscopy (BR-STM) and density functional theory (DFT) calculations. The phenyl group migration reaction of DMTPB precursor results in formations of variously unprecedented polycyclic aromatic hydrocarbons on the substrates. DFT calculations reveal that the multiple-steps phenyl group migration reactions are facilitated by the radical attack and rearomatization of the DMTPB precursor. Our study provides unprecedented insights into complex surface reaction mechanisms at the single molecule level, which may guide the design of chemical species.