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Title

On‐Surface Bottom‐Up Synthesis of Azine Derivatives Displaying Strong Acceptor Behavior

AuthorsRuiz del Árbol, Nerea ; Palacio, Irene ; Otero, Gonzalo ; Martínez, José I. ; Andrés, Pedro L. de ; Stetsovych, Oleksander; Moro-Lagares, María; Mutombo, Pingo; Švec, Martin ; Jelinek, Pavel; Cossaro, Albano; Floreano, Luca; Ellis, Gary James ; López, María Francisca ; Martín-Gago, José A.
KeywordsAb initio calculations
Charge transfer
Photoelectron spectroscopy
Scanning probe microscopy
Surface chemistry
Issue Date9-Jul-2018
PublisherJohn Wiley & Sons
CitationAngewandte Chemie - International Edition 57(28): 8582-8586 (2018)
AbstractOn‐surface synthesis is an emerging approach to obtain, in a single step, precisely defined chemical species that cannot be obtained by other synthetic routes. The control of the electronic structure of organic/metal interfaces is crucial for defining the performance of many optoelectronic devices. A facile on‐surface chemistry route has now been used to synthesize the strong electron‐acceptor organic molecule quinoneazine directly on a Cu(110) surface, via thermally activated covalent coupling of para‐aminophenol precursors. The mechanism is described using a combination of in situ surface characterization techniques and theoretical methods. Owing to a strong surface‐molecule interaction, the quinoneazine molecule accommodates 1.2 electrons at its carbonyl ends, inducing an intramolecular charge redistribution and leading to partial conjugation of the rings, conferring azo‐character at the nitrogen sites.
Publisher version (URL)https://doi.org/10.1002/anie.201804110
URIhttp://hdl.handle.net/10261/167949
DOI10.1002/anie.201804110
ISSN1433-7851
E-ISSN1521-3773
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(ICTP) Artículos
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