Autor segons l'article: Mohammed MSG; Colazzo L; Robles R; Dorel R; Echavarren AM; Lorente N; de Oteyza DG
Departament: Química Analítica i Química Orgànica
Autor/s de la URV: ECHAVARREN PABLOS, ANTONIO
Paraules clau: On-surface synthesis Heptacene Graphene nanoribbons Charge-transfer Barrier Acenes
Resum: © 2020, The Author(s). On-surface synthesis is becoming an increasingly popular approach to obtain new organic materials. In this context, metallic surfaces are the most commonly used substrates. However, their hybridization with the adsorbates often hinder a proper characterization of the molecule’s intrinsic electronic and magnetic properties. Here we report a route to electronically decouple molecules from their supporting substrates. In particular, we have used a Ag(001) substrate and hydrogenated heptacene molecules, in which the longest conjugated segment determining its frontier molecular orbitals amounts to five consecutive rings. The non-planarity that sp3 atoms impose on the carbon backbone results in electronically decoupled molecules, as demonstrated by scanning tunneling spectroscopy measurements. The charging resonances of the latter imply the presence of double tunneling barriers. We further explain the existing relation between the charging resonance energy and their contrast, as well as with the presence or absence of additional Kondo resonances.
Àrees temàtiques: Physics, multidisciplinary Physics and astronomy (miscellaneous) Physics and astronomy (all) General physics and astronomy Ciencias sociales
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: antoniomaria.echavarren@urv.cat
Identificador de l'autor: 0000-0002-6418-7930
Data d'alta del registre: 2023-05-13
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.nature.com/articles/s42005-020-00425-y
Referència a l'article segons font original: Communications Physics. 3 (1):
Referència de l'ítem segons les normes APA: Mohammed MSG; Colazzo L; Robles R; Dorel R; Echavarren AM; Lorente N; de Oteyza DG (2020). Electronic decoupling of polyacenes from the underlying metal substrate by sp 3 carbon atoms. Communications Physics, 3(1), -. DOI: 10.1038/s42005-020-00425-y
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
DOI de l'article: 10.1038/s42005-020-00425-y
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2020
Tipus de publicació: Journal Publications