Synthesis of Nonplanar Graphene Nanoribbon with Fjord Edges.
Xuelin YaoWenhao ZhengSilvio OsellaZijie QiuShuai FuDieter SchollmeyerBeate MüllerDavid BeljonneMischa BonnHai I WangKlaus MüllenAkimitsu NaritaPublished in: Journal of the American Chemical Society (2021)
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.
Keyphrases
- high resolution
- mass spectrometry
- carbon nanotubes
- room temperature
- walled carbon nanotubes
- molecular dynamics
- density functional theory
- liquid chromatography
- molecular dynamics simulations
- single cell
- magnetic resonance imaging
- magnetic resonance
- high speed
- computed tomography
- high performance liquid chromatography
- capillary electrophoresis
- aqueous solution
- monte carlo