Water Dispersible Few-Layer Graphene Stabilized by a Novel Pyrene Derivative at Micromolar Concentration

Nanomaterials

卷:8

Karol Strutyński¹  Manuel Melle-Franco¹  MariaFernanda Proença²  MariaGoreti Pereira²  Eunice Cunha³  MariaJosé Fernandes³  PauloE. Lopes³  Mariada Conceição Paiva³  Mariam Gonzalez-Debs⁴  RobertJ. Young⁵ 

[1] CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;

[2] Centre of Chemistry, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal;

[3] Institute for Polymers and Composites/i3N, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal;

[4] Microfabrication and Exploratory Nanotechnology Department, International Iberian Nanotechnology Laboratory (INL), 4715-330 Braga, Portugal;

[5] National Graphene Institute and School of Materials, University of Manchester, Manchester M13 9PL, UK;

关键词: few layer graphene;    pyrene derivative;    aqueous suspension;    molecular modelling;   

DOI  :  10.3390/nano8090675

来源: DOAJ

【 摘 要 】

The search for graphene or few-layer graphene production methods that are simple, allow mass production, and yield good quality material continues to provoke intense investigation. The present work contributes to this investigation through the study of the aqueous exfoliation of four types of graphene sources, which are namely graphite and graphite nanoflakes with different morphologies and geographical origins. The exfoliation was achieved in an aqueous solution of a soluble pyrene derivative that was synthesized to achieve maximum interaction with the graphene surface at low concentration (5 × 10−5 M). The yield of bilayer and few-layer graphene obtained was quantified by Raman spectroscopic analysis, and the adsorption of the pyrene derivative on the graphene surface was studied by thermogravimetric analysis and X-ray diffraction. The whole procedure was rationalized with the help of molecular modeling.

【 授权许可】

Unknown