Di Santo, Giovanni, Miletic, Tanja, Schwendt, Mathias, Zhou, Yating, Kariuki, Benson M. ![]() ![]() ![]() ![]() |
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Abstract
Semiconducting O-doped polycyclic aromatic hydrocarbons constitute a class of molecules whose optoelectronic properties can be tailored by acting on the π-extension of the carbon-based frameworks and on the oxygen linkages. Although much is known about their photophysical and electrochemical properties in solution, their self-assembly interfacial behavior on solid substrates has remained unexplored so far. In this paper, we have focused our attention on the on-surface self-assembly of O-doped bi-perylene derivatives. Their ability to assemble in ordered networks on Cu(111) single-crystalline surfaces allowed a combination of structural, morphological, and spectroscopic studies. In particular, the exploitation of the orbital mapping methodology based on angle-resolved photoemission spectroscopy, with the support of scanning tunneling microscopy and low-energy electron diffraction, allowed the identification of both the electronic structure of the adsorbates and their geometric arrangement. Our multi-technique experimental investigation includes the structure determination from powder X-ray diffraction data for a specific compound and demonstrates that the electronic structure of such large molecular self-assembled networks can be studied using the reconstruction methods of molecular orbitals from photoemission data even in the presence of segregated chiral domains.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Chemistry Advanced Research Computing @ Cardiff (ARCCA) |
Publisher: | American Chemical Society |
ISSN: | 1932-7447 |
Funders: | EU Horizon 2020 |
Date of First Compliant Deposit: | 8 November 2021 |
Date of Acceptance: | 5 October 2021 |
Last Modified: | 06 Jan 2024 04:45 |
URI: | https://orca.cardiff.ac.uk/id/eprint/145365 |
Citation Data
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