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다차원 탄소재료 연구단
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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(s)
Xu Zhang; Yuan Huang; Shanshan Chen; Na Yeon Kim; Wontaek Kim; David Schilter; Mandakini Biswal; Baowen Li; Zonghoon Lee; Sumin Ryu; Christopher W. Bielawski; Wolfgang S. Bacsa; Rodney S. Ruoff
Publication Date
2016-11
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.138, no.45, pp.14980 - 14986
Publisher
AMER CHEMICAL SOC
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. © 2016 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3252
ISSN
0002-7863
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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