Title: Poly(ethylene oxide) Functionalized Graphene Nanoribbons with Excellent Solution Processability
Authors: Huang, Yinjuan ×
Mai, Yiyong
Beser, Uliana
Teyssandier, Joan
Velpula, GM
Van Gorp, Hans
Straaso, Lasse Arnt
Hansen, Michael Ryan
Rizzo, Daniele
Casiraghi, Cinzia
Yang, Rong
Zhang, Guangyu
Wu, Dongqing
Zhang, Fan
Yan, Deyue
De Feyter, Steven
Muellen, Klaus
Feng, Xinliang #
Issue Date: 2016
Publisher: American Chemical Society
Series Title: Journal of the American Chemical Society vol:138 issue:32 pages:10136-10139
Abstract: Structurally well-defined graphene nanoribbons (GNRs) have attracted great interest as nextgeneration semiconductor materials. The functionalization of GNRs with polymeric side chains, which can widely broaden GNR-related studies on physiochemical properties and potential applications, has remained unexplored. Here, we demonstrate the bottom-up solution synthesis of defect-free GNRs grafted with flexible poly(ethylene oxide) (PEO) chains. The GNR backbones possess an armchair edge structure with a width of 1.0−1.7 nm and mean lengths of 15−60 nm, enabling near-infrared absorption and a low bandgap of 1.3 eV. Remarkably, the PEO grafting renders the GNRs superb dispersibility in common organic solvents, with a record concentration of ∼1 mg mL−1 (for GNR backbone) that is much higher than that (<0.01 mg mL−1) of reported GNRs. Moreover, the PEO-functionalized GNRs can be readily dispersed in water, accompanying with supramolecular helical nanowire formation. Scanning probe microscopy reveals raft-like self-assembled monolayers of uniform GNRs on graphite substrates. Thin-film-based field-effect transistors (FETs) of the GNRs exhibit a high carrier mobility of ∼0.3 cm2 V−1 s−1, manifesting promising application of the polymerfunctionalized GNRs in electronic devices.
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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