On-Surface Synthesis of a Dicationic Diazahexabenzocoronene Derivative on the Au(111) Surface

Biswas K, Urgel JI, Xu K, Ma J, Sanchez-Grande A, Mutombo P, Gallardo A, Lauwaet K, Mallada B, De La Torre B, Matej A, Gallego JM, Miranda R, Jelinek P, Feng X, Ecija D (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 60

Pages Range: 25551-25556

Journal Issue: 48

DOI: 10.1002/anie.202111863

Abstract

The atomically precise control over the size, shape and structure of nanographenes (NGs) or the introduction of heteroatom dopants into their sp2-carbon lattice confer them valuable electronic, optical and magnetic properties. Herein, we report on the design and synthesis of a hexabenzocoronene derivative embedded with graphitic nitrogen in its honeycomb lattice, achieved via on-surface assisted cyclodehydrogenation on the Au(111) surface. Combined scanning tunnelling microscopy/spectroscopy and non-contact atomic force microscopy investigations unveil the chemical and electronic structures of the obtained dicationic NG. Kelvin probe force microscopy measurements reveal a considerable variation of the local contact potential difference toward lower values with respect to the gold surface, indicative of its positive net charge. Altogether, we introduce the concept of cationic nitrogen doping of NGs on surfaces, opening new avenues for the design of novel carbon nanostructures.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Academy of Sciences of the Czech Republic (ASCR) / Akademie věd České republiky (AVČR) CZ Czech Republic (CZ) IMDEA-Nanociencia ES Spain (ES) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) ES Spain (ES)

How to cite

APA:

Biswas, K., Urgel, J.I., Xu, K., Ma, J., Sanchez-Grande, A., Mutombo, P.,... Ecija, D. (2021). On-Surface Synthesis of a Dicationic Diazahexabenzocoronene Derivative on the Au(111) Surface. Angewandte Chemie International Edition, 60(48), 25551-25556. https://doi.org/10.1002/anie.202111863

MLA:

Biswas, Kalyan, et al. "On-Surface Synthesis of a Dicationic Diazahexabenzocoronene Derivative on the Au(111) Surface." Angewandte Chemie International Edition 60.48 (2021): 25551-25556.

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