Graphene nanoribbons and nanoflakes from functionalized carbon precursors
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , , , |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/30128 |
Resumo: | The process of formation of graphene by exfoliation of carbon nanotubes (CNT) or graphite originates graphene nanoribbons (GNR) and graphene nanoflakes (GNF), respectively. These nanoparticles are expected to present interesting electronic properties, depending on their shape, size, and on their edge shape. Several methods for the unzipping of nanotubes were described in the literature [1]. The major limitations to the application of these methods are related to low yield, or to the formation of highly oxidized GNRs. The present work was motivated by the observation of the unzipping of functionalized CNT under ultra-high vacuum scanning tunneling microscopy (UHV STM) [2]. The CNTs under observation were functionalized by the 1,3-dipolar cycloaddition reaction [3], a potential route for the production of GNRs without oxidation. The formation of graphene flakes was observed when functionalized graphite was exfoliated under similar conditions as the CNT. The graphite was functionalized by the same procedure as the CNT. |
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7160 |
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Graphene nanoribbons and nanoflakes from functionalized carbon precursorsGraphene nanoribbonsGraphene nanoflakesCiências Naturais::Ciências QuímicasThe process of formation of graphene by exfoliation of carbon nanotubes (CNT) or graphite originates graphene nanoribbons (GNR) and graphene nanoflakes (GNF), respectively. These nanoparticles are expected to present interesting electronic properties, depending on their shape, size, and on their edge shape. Several methods for the unzipping of nanotubes were described in the literature [1]. The major limitations to the application of these methods are related to low yield, or to the formation of highly oxidized GNRs. The present work was motivated by the observation of the unzipping of functionalized CNT under ultra-high vacuum scanning tunneling microscopy (UHV STM) [2]. The CNTs under observation were functionalized by the 1,3-dipolar cycloaddition reaction [3], a potential route for the production of GNRs without oxidation. The formation of graphene flakes was observed when functionalized graphite was exfoliated under similar conditions as the CNT. The graphite was functionalized by the same procedure as the CNT.Fundação para a Ciência e a Tecnologia (FCT)Universidade do MinhoPaiva, M. C.Cunha, Eunice Paula FreitasRocha, HelenaProença, M. Fernanda R. P.Alves, N. M.Mano, J. F.Melle-Franco, M.Deepak, Francis LeonardGonzález-Debs, MariamLopes, P. E.20142014-01-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/30128enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-11T06:06:05Zoai:repositorium.sdum.uminho.pt:1822/30128Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T06:06:05Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
title |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
spellingShingle |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors Paiva, M. C. Graphene nanoribbons Graphene nanoflakes Ciências Naturais::Ciências Químicas |
title_short |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
title_full |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
title_fullStr |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
title_full_unstemmed |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
title_sort |
Graphene nanoribbons and nanoflakes from functionalized carbon precursors |
author |
Paiva, M. C. |
author_facet |
Paiva, M. C. Cunha, Eunice Paula Freitas Rocha, Helena Proença, M. Fernanda R. P. Alves, N. M. Mano, J. F. Melle-Franco, M. Deepak, Francis Leonard González-Debs, Mariam Lopes, P. E. |
author_role |
author |
author2 |
Cunha, Eunice Paula Freitas Rocha, Helena Proença, M. Fernanda R. P. Alves, N. M. Mano, J. F. Melle-Franco, M. Deepak, Francis Leonard González-Debs, Mariam Lopes, P. E. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Paiva, M. C. Cunha, Eunice Paula Freitas Rocha, Helena Proença, M. Fernanda R. P. Alves, N. M. Mano, J. F. Melle-Franco, M. Deepak, Francis Leonard González-Debs, Mariam Lopes, P. E. |
dc.subject.por.fl_str_mv |
Graphene nanoribbons Graphene nanoflakes Ciências Naturais::Ciências Químicas |
topic |
Graphene nanoribbons Graphene nanoflakes Ciências Naturais::Ciências Químicas |
description |
The process of formation of graphene by exfoliation of carbon nanotubes (CNT) or graphite originates graphene nanoribbons (GNR) and graphene nanoflakes (GNF), respectively. These nanoparticles are expected to present interesting electronic properties, depending on their shape, size, and on their edge shape. Several methods for the unzipping of nanotubes were described in the literature [1]. The major limitations to the application of these methods are related to low yield, or to the formation of highly oxidized GNRs. The present work was motivated by the observation of the unzipping of functionalized CNT under ultra-high vacuum scanning tunneling microscopy (UHV STM) [2]. The CNTs under observation were functionalized by the 1,3-dipolar cycloaddition reaction [3], a potential route for the production of GNRs without oxidation. The formation of graphene flakes was observed when functionalized graphite was exfoliated under similar conditions as the CNT. The graphite was functionalized by the same procedure as the CNT. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014-01-01T00:00:00Z |
dc.type.driver.fl_str_mv |
conference object |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/30128 |
url |
http://hdl.handle.net/1822/30128 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
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1817544852209926144 |