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Self-assembled functionalized graphene nanoribbons from carbon nanotubes
Graphene nanoribbons (GNR) weregenerated in ethanol solu-tion by unzipping pyrrolidine-functionalized carbon nanotubesunder mild conditions. Evaporation of the solvent resulted inregularfew-layer stacks of graphene nanoribbons observed bytransmission electron microscopy (TEM) and X-ray diffraction.The experimental interlayer distance (0.49–0.56 nm) was con-firmed by computer modelling (0.51 nm). Computer modellingshowedthat the large interlayer spacing (compared withgraphite) is due to the presence of the functional groups anddepends on their concentration.Stacked nanoribbons wereobserved to redissolve upon solvent addition. This preparationmethodcould allow the fine-tuning of the interlayer distancesby controlling the number and/orthe nature of the chemicalgroups in between the graphene layers. ; 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.
Self-assembled functionalized graphene nanoribbons from carbon nanotubes
Graphene nanoribbons (GNR) weregenerated in ethanol solu-tion by unzipping pyrrolidine-functionalized carbon nanotubesunder mild conditions. Evaporation of the solvent resulted inregularfew-layer stacks of graphene nanoribbons observed bytransmission electron microscopy (TEM) and X-ray diffraction.The experimental interlayer distance (0.49–0.56 nm) was con-firmed by computer modelling (0.51 nm). Computer modellingshowedthat the large interlayer spacing (compared withgraphite) is due to the presence of the functional groups anddepends on their concentration.Stacked nanoribbons wereobserved to redissolve upon solvent addition. This preparationmethodcould allow the fine-tuning of the interlayer distancesby controlling the number and/orthe nature of the chemicalgroups in between the graphene layers. ; 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.
Self-assembled functionalized graphene nanoribbons from carbon nanotubes
Cunha, Eunice Paula Freitas (author) / Proença, M. Fernanda R. P. (author) / Costa, Florinda (author) / Fernandes, António J. (author) / Ferro, Marta A. C. (author) / Lopes, P. E. (author) / González-Debs, Mariam (author) / Melle-Franco, M. (author) / Deepak, Francis Leonard (author) / Paiva, M. C. (author)
2015-01-01
doi:10.1002/open.201402135
Article (Journal)
Electronic Resource
English
DDC:
690
Graphene nanoribbons have the edge: Carbon
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