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Author

Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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Wedging graphite into graphene and graphene-like platelets by dendritic macromolecules

Cited 7 times inthomson ciCited 5 times inthomson ci
Title
Wedging graphite into graphene and graphene-like platelets by dendritic macromolecules
Author
Jeon, In-YupChoi, Hyun-JungBae, Seo-YoonChang, Dong WookBaek, Jong-Beom
Keywords
Chemical affinities; Common solvents; Dendritic macromolecules; In-situ; Molecular architecture; SEM; TEM; Wide-angle x-ray diffraction
Issue Date
2011
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.21, no.21, pp.7820 - 7826
Abstract
We report in situ 'direct' grafting of dendritic macromolecular wedges to the edges of 'pristine' graphite. Because of the three-dimensional molecular architectures, the solubility of dendritic macromolecules is profoundly improved compared with that of their linear analogues. As a result, the resultant macromolecular wedge grafted graphite disperses well in common solvents. On the basis of results from wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM), HPEK is selectively grafted at the edges of graphite. For the efficient delamination of graphite into graphene and graphene-like platelets, the dendritic macromolecules with numerous polar periphery groups not only acts as macromolecular wedges but provides chemical affinity to solvents.
URI
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DOI
http://dx.doi.org/10.1039/c1jm10583c
ISSN
0959-9428
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