AVS 66th International Symposium & Exhibition
    Applied Surface Science Division Thursday Sessions
       Session AS-ThP

Paper AS-ThP5
Controlling Surfaced-catalyzed Coupling of Aryl Halides for Preparation of Two-dimensional Covalent Networks

Thursday, October 24, 2019, 6:30 pm, Room Union Station B

Session: Applied Surface Science Poster Session
Presenter: Margaret Wolf, University of Connecticut
Authors: M. Wolf, University of Connecticut
C.R. Gerber, University of Connecticut
R.C. Quardokus, University of Connecticut
Correspondent: Click to Email
Formation and design of two-dimensional carbon-based materials can be controlled through surface-catalyzed reactions of small molecules. We use low-temperature scanning tunneling microscopy (LT-UHV STM) to monitor and characterize the surface-catalyzed reaction of dibromobenzene and dibromobithiophene. The Ullmann-like and Yamamoto-like coupling on Au(111) lifts the gold herringbone reconstruction and the gold atoms and coupled adsorbate are mobile at 4 K. Annealing results in two-dimensional covalent networks and restores the gold herringbone reconstruction.