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Article: Toward Cove-Edged Low Band Gap Graphene Nanoribbons

TitleToward Cove-Edged Low Band Gap Graphene Nanoribbons
Authors
Issue Date2015
Citation
Journal of the American Chemical Society, 2015, v. 137, n. 18, p. 6097-6103 How to Cite?
Abstract© 2015 American Chemical Society. Graphene nanoribbons (GNRs), defined as nanometer-wide strips of graphene, have attracted increasing attention as promising candidates for next-generation semiconductors. Here, we demonstrate a bottom-up strategy toward novel low band gap GNRs (Eg = 1.70 eV) with a well-defined cove-type periphery both in solution and on a solid substrate surface with chrysene as the key monomer. Corresponding cyclized chrysene-based oligomers consisting of the dimer and tetramer are obtained via an Ullmann coupling followed by oxidative intramolecular cyclodehydrogenation in solution, and much higher GNR homologues via on-surface synthesis. These oligomers adopt nonplanar structures due to the steric repulsion between the two C-H bonds at the inner cove position. Characterizations by single crystal X-ray analysis, UV-vis absorption spectroscopy, NMR spectroscopy, and scanning tunneling microscopy (STM) are described. The interpretation is assisted by density functional theory (DFT) calculations. (Figure Presented).
Persistent Identifierhttp://hdl.handle.net/10722/276687
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, Junzhi-
dc.contributor.authorLi, Bo Wei-
dc.contributor.authorTan, Yuan Zhi-
dc.contributor.authorGiannakopoulos, Angelos-
dc.contributor.authorSanchez-Sanchez, Carlos-
dc.contributor.authorBeljonne, David-
dc.contributor.authorRuffieux, Pascal-
dc.contributor.authorFasel, Roman-
dc.contributor.authorFeng, Xinliang-
dc.contributor.authorMüllen, Klaus-
dc.date.accessioned2019-09-18T08:34:21Z-
dc.date.available2019-09-18T08:34:21Z-
dc.date.issued2015-
dc.identifier.citationJournal of the American Chemical Society, 2015, v. 137, n. 18, p. 6097-6103-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/276687-
dc.description.abstract© 2015 American Chemical Society. Graphene nanoribbons (GNRs), defined as nanometer-wide strips of graphene, have attracted increasing attention as promising candidates for next-generation semiconductors. Here, we demonstrate a bottom-up strategy toward novel low band gap GNRs (E<inf>g</inf> = 1.70 eV) with a well-defined cove-type periphery both in solution and on a solid substrate surface with chrysene as the key monomer. Corresponding cyclized chrysene-based oligomers consisting of the dimer and tetramer are obtained via an Ullmann coupling followed by oxidative intramolecular cyclodehydrogenation in solution, and much higher GNR homologues via on-surface synthesis. These oligomers adopt nonplanar structures due to the steric repulsion between the two C-H bonds at the inner cove position. Characterizations by single crystal X-ray analysis, UV-vis absorption spectroscopy, NMR spectroscopy, and scanning tunneling microscopy (STM) are described. The interpretation is assisted by density functional theory (DFT) calculations. (Figure Presented).-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleToward Cove-Edged Low Band Gap Graphene Nanoribbons-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1021/jacs.5b03017-
dc.identifier.pmid25909566-
dc.identifier.pmcidPMC4456008-
dc.identifier.scopuseid_2-s2.0-84929359075-
dc.identifier.volume137-
dc.identifier.issue18-
dc.identifier.spage6097-
dc.identifier.epage6103-
dc.identifier.eissn1520-5126-
dc.identifier.isiWOS:000354910500037-
dc.identifier.issnl0002-7863-

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