Self‐Assembled Functionalized Graphene Nanoribbons from Carbon Nanotubes

ChemistryOpen

Eunice Cunha¹  Prof. Maria Fernanda Proença⁴  Prof. Florinda Costa³  António J. Fernandes³  Marta A. C. Ferro²  Dr. Paulo E. Lopes⁶  Dr. Mariam González-Debs⁷  Dr. Manuel Melle-Franco⁵  Dr. Francis Leonard Deepak⁷ 

[1] Institute for Polymers and Composites/I3N, University of Minho, Campus of Azurem, Guimarães, Portugal;CICECO, Department of Ceramics & Glass Engineering, University of Aveiro, Aveiro, Portugal;Physics of Semiconductors, Optoelectronics & Disordered Systems/I3N, University of Aveiro, Aveiro, Portugal;Department of Chemistry, University of Minho, Campus of Gualtar, Braga, Portugal;Computer Science & Technology Center, University of Minho, Braga, Portugal;PIEP-Pole for Innovation in Polymer Engineering, University of Minho, Campus of Azurém, Guimarães, Portugal;International Iberian Nanotechnology Laboratory (INL, Braga, (Portugal

关键词: graphene;    molecular modelling;    nanostructures;    self-assemble;   

DOI  :  10.1002/open.201402135

来源: Wiley

【 摘 要 】

Abstract

Graphene nanoribbons (GNR) were generated in ethanol solution by unzipping pyrrolidine-functionalized carbon nanotubes under mild conditions. Evaporation of the solvent resulted in regular few-layer stacks of graphene nanoribbons observed by transmission electron microscopy (TEM) and X-ray diffraction. The experimental interlayer distance (0.49–0.56 nm) was confirmed by computer modelling (0.51 nm). Computer modelling showed that the large interlayer spacing (compared with graphite) is due to the presence of the functional groups and depends on their concentration. Stacked nanoribbons were observed to redissolve upon solvent addition. This preparation method could allow the fine-tuning of the interlayer distances by controlling the number and/or the nature of the chemical groups in between the graphene layers.

【 授权许可】

CC BY-NC-ND   
© 2014 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

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