Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session F66: Towards Application: Organics and Surfaces
8:00 AM–10:48 AM,
Tuesday, March 15, 2022
Room: Hyatt Regency Hotel -Grant Park D
Chair: Andreas Riemann, Western Washington University
Abstract: F66.00002 : Heterotriangulene-based covalent networks on noble metal surfaces studied through STM and TOF-SIMS*
8:12 AM–8:24 AM
Presenter:
Harshavardhan Murali
(Georgia Institute of Technology)
Authors:
Harshavardhan Murali
(Georgia Institute of Technology)
Zachery Enderson
(Georgia Institute of Technology)
Raghunath Dasari
(School of Chemistry and Biochemistry, Georgia Institute of Technology)
Timothy C Parker
(School of Chemistry and Biochemistry, Georgia Institute of Technology)
Seth R Marder
(Department of Chemical and Biological Engineering, Department of Chemistry, Materials Science and Engineering, University of Colorado Boulder)
Hong Li
(Department of Chemistry and Biochemistry, University of Arizona)
Qingqing Dai
(Department of Chemistry and Biochemistry, University of Arizona)
Jean-Luc E Bredas
(University of Arizona)
Phillip N First
(Georgia Institute of Technology)
Two dimensional covalent organic frameworks can be synthesized on noble metal surfaces using the Ullmann coupling reaction. The growth of the network can be controlled by careful design of the molecular precursors and other factors such as the presence of a controlled amount of atomic hydrogen[1,2]. We study the surface synthesis of triphenylamine-based organic networks on Ag(111) and Au(111) surfaces grown under different conditions using Scanning Tunneling Microscopy/Spectroscopy (STM/STS) and Time-of-flight Secondary Ion Mass spectroscopy (TOF-SIMS) to analyze the on-surface reaction products. We also study the electronic properties of these materials by comparing STS to both first-principles and semi-empirical calculations.
[1] Zuzak et al. ACS Nano, 14(10) 13316 (2020)
[2] Enderson et al., Probing the evolution of electronic structure from a triarylamine monomer to a 2D conjugated covalent organic framework, through on-surface synthesis, Submitted
*Funded by United States Army Research Office grant number W911NF-15-1-0447 (MURI) and NASA-SSERVI (Cooperative Agreement No. NNA17BF68A)
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