Self-Assembled Functionalized Graphene Nanoribbons from Carbon Nanotubes


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 (0.49-0.56nm) was confirmed by computer modelling (0.51nm). 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.



subject category



Cunha, E; Proenca, MF; Costa, F; Fernandes, AJ; Ferro, MAC; Lopes, PE; Gonzalez-Debs, M; Melle-Franco, M; Deepak, FL; Paiva, MC

our authors



The authors are thankful to the Institute of Nanostructures, Nanomodelling and Nanofabrication (Associated Laboratory of the Fundacao para a Ciencia e a Tecnologia (FCT), Portugal) for funding of the project Grafitran (PEst-C/CTM/LA0025/2011). M. Melle-Franco acknowledges support from FCT through the Ciencia 2008 program and grants PEst-OE/EEI/UI0752/2014 and CONC-REEQ. E. Cunha gratefully acknowledges the FCT also for the Ph.D. grant SFRH/BD/87214/2012.

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".