Polyaromatic cores for the exfoliation of popular 2D materials

Marina Garrido; Myriam Barrejón; José Augusto Berrocal; Zois Syrgiannis; Maurizio Prato

doi:10.1039/D2NR00894G

Polyaromatic cores for the exfoliation of popular 2D materials†

Marina Garrido,

*^a Myriam Barrejón,

^ab José Augusto Berrocal,

^c Zois Syrgiannis^ade and Maurizio Prato

^afg

Author affiliations

* Corresponding authors

^a Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste, Università degli Studi di Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy
E-mail: mgarrido@units.it

^b Neural Repair and Biomaterials Laboratory, Hospital Nacional de Parapléjicos (SESCAM), Finca la Peraleda s/n, 45071 Toledo, Spain

^c Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland

^d Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA

^e Department of Chemistry, Northwestern University, Evanston, IL 60208, USA

^f Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón 194, Donostia-San Sebastián 20014, Spain

^g Ikerbasque, Basque Foundation for Science, Bilbao 48013, Spain

Abstract

Two-dimensional (2D) nanomaterials have attracted interest from the scientific community due to their unique properties. The production of these materials has been carried out by diverse methodologies, the liquid phase exfoliation being the most promising one due to its simplicity and potential scalability. The use of several stabilizers allows to obtain dispersions of these 2D nanomaterials in solvents with low boiling points. Herein we describe a general exfoliation method for different 2D materials employing a biphasic water/dichloromethane system and two different (poly)aromatic hydrocarbons (PAHs). This method allows us to obtain dispersions of the exfoliated 2D materials with high concentrations in the organic solvent. Due to the low boiling point of dichloromethane, and therefore its easy removal, the obtained dispersions can be employed as additives for different composites. We corroborate that the exfoliation efficiency is improved due to the π–π and van der Waals interactions between the PAHs and the layers of the 2D materials.

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Article information

DOI: https://doi.org/10.1039/D2NR00894G
Article type: Paper
Submitted: 15 Feb 2022
Accepted: 27 May 2022
First published: 14 Jun 2022

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Nanoscale, 2022,14, 8986-8994

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Polyaromatic cores for the exfoliation of popular 2D materials

M. Garrido, M. Barrejón, J. A. Berrocal, Z. Syrgiannis and M. Prato, Nanoscale, 2022, 14, 8986 DOI: 10.1039/D2NR00894G

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Nanoscale

Polyaromatic cores for the exfoliation of popular 2D materials†

Abstract

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Polyaromatic cores for the exfoliation of popular 2D materials

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