Synthesis of Nonplanar Graphene Nanoribbon with Fjord Edges.
J Am Chem Soc
; 143(15): 5654-5658, 2021 04 21.
Article
em En
| MEDLINE
| ID: mdl-33825484
ABSTRACT
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.
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Base de dados:
MEDLINE
Assunto principal:
Nanoestruturas
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Grafite
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Alemanha