UNIQUE EXTRA-LONG CHEMICALLY-DERIVED GRAPHITIC PYRAMIDAL RIBBONS

Chacón-Torres JC, Andrade-Guevara D, García-Betancourt ML, Kröckel C (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Acta Microscopica Committee of Societies for Electron Microscopy (CIASEM)

Book Volume: 33

Pages Range: 26-32

Journal Issue: 1

Abstract

In this letter, unique extra-long chemically derived pyramidal graphitic ribbons (PGR) were individualized and deposited onto a SiO2 substrate via simple spin-coating. The length of the individualized PGRs was found to exceed the average length of graphene nanoribbons (GNRs) by hundreds of microns. The physicochemical individualization method resulted in the creation of a novel “graphene nanoribbon intercalation compound” (GNRIC), following a strict stoichiometric relation between the GNR powder and alkali metals. Our experiments were conducted with the use of Na and K as intercalants at NaC8, KC8, and KC24 concentrations. Furthermore, we exposed them to THF and discovered that the nanoribbon bundles obtained from CVD bottom-up bulk synthesis of GNRs can be exfoliated. The exfoliated nanoribbons (ex-GNRs) were analyzed using SEM, Raman spectroscopy, optical microscopy, and AFM, revealing the existence of ribbon-like pyramidal nanostructures that are larger than 100 µm. The morphology of these graphitic ribbons, brings a new starting point and immense potential to the development of graphene-based devices for optoelectronics and solar cells.

Authors with CRIS profile

Claudia Kröckel Lehrstuhl für Organische Chemie II

Involved external institutions

Universidad de Investigación de Tecnología Experimental (Yachay Tech) EC Ecuador (EC) Autonomous University of the State of Morelos / Universidad Autónoma del Estado de Morelos MX Mexico (MX)

How to cite

APA:

Chacón-Torres, J.C., Andrade-Guevara, D., García-Betancourt, M.L., & Kröckel, C. (2024). UNIQUE EXTRA-LONG CHEMICALLY-DERIVED GRAPHITIC PYRAMIDAL RIBBONS. Acta Microscopica, 33(1), 26-32.

MLA:

Chacón-Torres, Julio C., et al. "UNIQUE EXTRA-LONG CHEMICALLY-DERIVED GRAPHITIC PYRAMIDAL RIBBONS." Acta Microscopica 33.1 (2024): 26-32.

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