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RESEARCH PRODUCT

Synthesis of Nonplanar Graphene Nanoribbon with Fjord Edges

Hai I. WangMischa BonnWenhao ZhengKlaus MüllenKlaus MüllenBeate MüllerShuai FuDavid BeljonneZijie QiuXuelin YaoSilvio OsellaDieter SchollmeyerAkimitsu NaritaAkimitsu Narita

subject

Terahertz radiationCrystallography X-RayBiochemistryCatalysislaw.inventionchemistry.chemical_compoundsymbols.namesakeColloid and Surface ChemistrylawSpectroscopy Fourier Transform InfraredPolycyclic CompoundsDensity Functional TheoryPyrenesbusiness.industryGrapheneCommunicationStereoisomerismGeneral ChemistryNanostructuresSemiconductorHelicenechemistryNanoelectronicsChemical physicssymbolsDensity functional theoryGraphitebusinessRaman spectroscopyGraphene nanoribbons

description

As a new family of semiconductors, graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have appeared as promising candidates for next-generation nanoelectronics. Out-of-plane deformation of π-frames in GNRs brings further opportunities for optical and electronic property tuning. Here we demonstrate a novel fjord-edged GNR (FGNR) with a nonplanar geometry obtained by regioselective cyclodehydrogenation. Triphenanthro-fused teropyrene 1 and pentaphenanthro-fused quateropyrene 2 were synthesized as model compounds, and single-crystal X-ray analysis revealed their helically twisted conformations arising from the [5]helicene substructures. The structures and photophysical properties of FGNR were investigated by mass spectrometry and UV-vis, FT-IR, terahertz, and Raman spectroscopic analyses combined with theoretical calculations.

yearjournalcountryeditionlanguage
2021-04-07
10.1021/jacs.1c01882https://hdl.handle.net/21.11116/0000-0008-87AD-D21.11116/0000-0008-87AF-B