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Author

Bielawski, Christopher W.
Synthetic Materials & Macromolecules
Research Interests
  • Synthetic chemistry, materials science, polymer chemistry, catalysis, carbon-based materials

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Birch-Type Hydrogenation of Few-Layer Graphenes: Products and Mechanistic Implications

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Title
Birch-Type Hydrogenation of Few-Layer Graphenes: Products and Mechanistic Implications
Author
Zhang, XuHuang, YuanChen, ShanshanKim, Na YeonKim, WontaekSchilter, DavidBiswal, MandakiniLi, BaowenLee, ZonghoonRyu, SunminBielawski, Christopher W.Bacsa, Wolfgang S.Ruoff, Rodney S.
Issue Date
201611
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.138, no.45, pp.14980 - 14986
Abstract
Few-layer graphenes, supported on Si with a superficial oxide layer, were subjected to a Birch-type reduction using Li and H2O as the electron and proton donors, respectively. The extent of hydrogenation for bilayer graphene was estimated at 1.6–24.1% according to Raman and X-ray photoelectron spectroscopic data. While single-layer graphene reacts uniformly, few-layer graphenes were hydrogenated inward from the edges and/or defects. The role of these reactive sites was reflected in the inertness of pristine few-layer graphenes whose edges were sealed. Hydrogenation of labeled bilayer (12C/13C) and trilayer (12C/13C/12C) graphenes afforded products whose sheets were hydrogenated to the same extent, implicating passage of reagents between the graphene layers and equal decoration of each graphene face. The reduction of few-layer graphenes introduces strain, allows tuning of optical transmission and fluorescence, and opens synthetic routes to long sought-after films containing sp3-hybridized carbon.
URI
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DOI
http://dx.doi.org/10.1021/jacs.6b08625
ISSN
0002-7863
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