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Mandakini Biswal
다차원 탄소재료 연구단
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Sodide and Organic Halides Effect Covalent Functionalization of Single-Layer and Bilayer Graphene

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Title
Sodide and Organic Halides Effect Covalent Functionalization of Single-Layer and Bilayer Graphene
Author(s)
Mandakini Biswal; Xu Zhang; David Schilter; Tae Kyung Lee; Dae Yeon Hwang; Manav Saxena; Sun Hwa Lee; Shanshan Chen; Sang Kyu Kwak; Christopher W. Bielawski; Wolfgang S. Bacsa; Rodney S. Ruoff
Publication Date
2017-03
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.139, no.11, pp.4202 - 4210
Publisher
AMER CHEMICAL SOC
Abstract
The covalent functionalization of single and bilayer graphene on SiO2 (300 nm)/Si was effected through sequential treatment with the alkalide reductant [K(15-crown-5)(2)]Na and electrophilic aryl or alkyl halides, of which the iodides proved to be the most reactive. The condensation reactions proceeded at room temperature and afforded the corresponding aryl- or alkyl-appended graphemes. For each sample, Raman and X-ray photoelectron spectroscopies were used to evaluate the degrees and uniformities of functionalization. Statistical analyses of the Raman data revealed that the introduction of the organic moieties was accompanied by sp(3)-rehybridization of the basal plane atoms. When bilayers consisting of C-13 and C-12 layers were treated, both the top and bottom sheets were decorated with organic groups. The reaction was followed using Raman spectroscopy, and the mechanism was studied by theoretical calculations. Indicative of its structure and reactivity, 4-pyridyl-decorated single-layer graphene was readily benzylated and appears to be an ideal platform to develop functional materials © 2017 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3553
ISSN
0002-7863
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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