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Metal-organic interface functionalization via acceptor end groups: PTCDI on coinage metals

DOI: 10.1103/PhysRevMaterials.1.013001 DOI Help

Authors: Antoni Franco-canellas (Universität Tübingen) , Qi Wang (Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University) , Katharina Broch (Fritz-Haber-Institut der Max-Planck-Gesellschaft) , David A. Duncan (Diamond Light Source) , Pardeep Kumar Thakur (Diamond Light Source) , Lijia Liu (Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University) , Satoshi Kera (Institute for Molecular Science) , Alexander Gerlach (Universität Tübingen) , Steffen Duhm (Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University) , Frank Schreiber (Universität Tübingen)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review Materials , VOL 1 , PAGES 013001(R)

State: Published (Approved)
Published: June 2017
Diamond Proposal Number(s): 12797 , 9523

Abstract: We present a comprehensive study of the complex interface between perylene-3,4,9,10-tetracarboxylic diimide (PTCDI) and the (111) surfaces of the three coinage metals. The specific structural, electronic, and chemical properties of the interface rendered by the different substrate reactivities are monitored with low-energy electron diffraction (LEED), x-ray standing waves (XSW), and ultraviolet and x-ray photelectron spectroscopy (UPS and XPS). In particular, the balance between molecule-substrate and molecule-molecule interactions is considered when interpreting the core-level spectra of the different interfaces. By presenting additional adsorption distances of the unsubstituted perylene, we show that the molecular functionalization via end groups with acceptor character facilitates the charge transfer from the substrate but it is not directly responsible for the associated short adsorption distances, demonstrating that this frequently assumed correlation is not necessarily correct.

Subject Areas: Physics, Materials


Instruments: I09-Surface and Interface Structural Analysis