Dodecacene Generated on Surface: Reopening of the Energy Gap

Eisenhut F, Kuehne T, Garcia F, Fernandez S, Guitian E, Perez D, Trinquier G, Cuniberti G, Joachim C, Pena D, Moresco F (2020)

Publication Type: Journal article

Publication year: 2020

Journal

ACS nano American Chemical Society

Book Volume: 14

Pages Range: 1011-1017

Journal Issue: 1

DOI: 10.1021/acsnano.9b08456

Abstract

The acene series represents a model system to investigate the intriguing electronic properties of extended π-electron structures in the one-dimensional limit, which are important for applications in electronics and spintronics and for the fundamental understanding of electronic transport. Here, we present the on-surface generation of the longest acene obtained so far: dodecacene. Scanning tunneling spectroscopy gives access to the energy position and spatial distribution of its electronic states on the Au(111) surface. We observe that, after a progressive closing of the gap and a stabilization to about 1 eV at the length of decacene and undecacene, the energy gap of dodecacene unexpectedly increases to 1.4 eV. Considering the acene series as an exemplary general case, we discuss the evolution with length of the single tunneling resonances in comparison with ionization energy, electronic affinity, and optical gap.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Universidade de Santiago Compostela (USC) ES Spain (ES) Université Toulouse III - Paul Sabatier FR France (FR) National Center for Scientific Research / Centre national de la recherche scientifique (CNRS) FR France (FR)

How to cite

APA:

Eisenhut, F., Kuehne, T., Garcia, F., Fernandez, S., Guitian, E., Perez, D.,... Moresco, F. (2020). Dodecacene Generated on Surface: Reopening of the Energy Gap. ACS nano, 14(1), 1011-1017. https://doi.org/10.1021/acsnano.9b08456

MLA:

Eisenhut, Frank, et al. "Dodecacene Generated on Surface: Reopening of the Energy Gap." ACS nano 14.1 (2020): 1011-1017.

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