Heterostructures through Divergent Edge Reconstruction in Nitrogen-Doped Segmented Graphene Nanoribbons.

Autor: Marangoni T; Department of Chemistry, University of California Berkeley, 699 Tan Hall, Berkeley, CA, 94720, U.S.A., Haberer D; Department of Chemistry, University of California Berkeley, 699 Tan Hall, Berkeley, CA, 94720, U.S.A., Rizzo DJ; Department of Physics, University of California Berkeley, 345 Birge Hall, Berkeley, CA, 94720, United States., Cloke RR; Department of Chemistry, University of California Berkeley, 699 Tan Hall, Berkeley, CA, 94720, U.S.A., Fischer FR; Department of Chemistry, University of California Berkeley, 699 Tan Hall, Berkeley, CA, 94720, U.S.A.. ffischer@berkeley.edu.; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, United States. ffischer@berkeley.edu.; Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, United States. ffischer@berkeley.edu.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2016 Sep 05; Vol. 22 (37), pp. 13037-40. Date of Electronic Publication: 2016 Aug 09.
DOI: 10.1002/chem.201603497
Abstrakt: Atomically precise engineering of defined segments within individual graphene nanoribbons (GNRs) represents a key enabling technology for the development of advanced functional device architectures. Here, the bottom-up synthesis of chevron GNRs decorated with reactive functional groups derived from 9-methyl-9H-carbazole is reported. Scanning tunneling and non-contact atomic force microscopy reveal that a thermal activation of GNRs induces the rearrangement of the electron-rich carbazole into an electron-deficient phenanthridine. The selective chemical edge-reconstruction of carbazole-substituted chevron GNRs represents a practical strategy for the controlled fabrication of spatially defined GNR heterostructures from a single molecular precursor.
(© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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