期刊
CHEMISTRYOPEN
卷 4, 期 2, 页码 115-119出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/open.201402135
关键词
graphene; molecular modelling; nanostructures; self-assemble
资金
- Institute of Nanostructures, Nanomodelling and Nanofabrication (Associated Laboratory of the Fundacao para a Ciencia e a Tecnologia (FCT), Portugal) [PEst-C/CTM/LA0025/2011]
- FCT [PEst-OE/EEI/UI0752/2014, CONC-REEQ, SFRH/BD/87214/2012]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/87214/2012, PEst-OE/EEI/UI0752/2014] Funding Source: FCT
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.
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