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Poly(ethylene oxide) Functionalized Graphene Nanoribbons with Excellent Solution Processability Yinjuan Huang, Yiyong Mai, Uliana Beser, Joan Teyssandier, Gangamallaiah Velpula, Hans van Gorp, Lasse Arnt Straasø, Michael Ryan Hansen, Daniele Rizzo, Cinzia Casiraghi, Rong Yang, Guangyu Zhang, Dongqing Wu, Fan Zhang, Deyue Yan, Steven De Feyter, Klaus Müllen, and Xinliang Feng J. Am. Chem. Soc., Just Accepted Manuscript • DOI: 10.1021/jacs.6b07061 • Publication Date (Web): 27 Jul 2016 Downloaded from http://pubs.acs.org on August 1, 2016
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Journal of the American Chemical Society
Poly(ethylene oxide) Functionalized Graphene Nanoribbons with Excellent Solution Processability Yinjuan Huang1, Yiyong Mai1*, Uliana Beser2, Joan Teyssandier3, Gangamallaiah Velpula3, Hans van Gorp3, Lasse Arnt Straasø4, Michael Ryan Hansen5, Daniele Rizzo6, Cinzia Casiraghi6, Rong Yang7, Guangyu Zhang7, Dongqing Wu1, Fan Zhang1, Deyue Yan1, Steven De Feyter3, Klaus Müllen2, Xinliang Feng1,8* 1
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Shanghai 2 3 200240, China; Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany; Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, 4 Belgium; Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Den5 mark; Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstr. 28/30, D-48149 6 Münster, Germany; School of Chemistry, Manchester University, Oxford Road, Manchester M139PL, United King7 8 dom; Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China; Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062 Dresden, Germany Supporting Information ABSTRACT: Structurally well-defined graphene nanoribbons (GNRs) have attracted great interest as next-generation 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. In this work, 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 -1 -1 record concentration of ∼1 mg mL (for GNR backbone) that is much higher than that (
