Solution-processable conductive micro-hydrogels of nanoparticle/graphene platelets produced by reversible self-assembly and aqueous exfoliation

Title
Solution-processable conductive micro-hydrogels of nanoparticle/graphene platelets produced by reversible self-assembly and aqueous exfoliation
Authors
박성진
Issue Date
2013
Publisher
JOURNAL OF MATERIALS CHEMISTRY
Series/Report no.
JOURNAL OF MATERIALS CHEMISTRY ; Vol1 no.41 Startpage 12900 Endpage 12908
Abstract
Preventing the π?π restacking of graphene-based platelets is essential to advance their fundamental attributes in a wide range of scalable chemical processes. Using macroscopic hydrogels of waterintercalated metal-oxide/graphene platelets is a novel approach to produce microscopic hydrogels with extraordinary surface accessibility and electronic properties. Nanoparticle decoration and surface hydration prevent irreversible π?π stacking, paving the way for reversible self-assembly and aqueousphase exfoliation. The hydrophilic nanoparticle coating facilitates the colloidal stability of hybrid microgels in aqueous and organic media without the assistance of surfactants. This allows these materials to versatilely function as basic building blocks as well as applied nanomaterials in wetchemistry applications. The preservation of unique properties of SnO2-decorated graphene platelets leads to significantly enhanced adsorptive and photocatalytic activities. By exploiting the fluorescence quenching effect, a dye?hydrogel complex can be utilized as a supramolecular sensor for sensitive DNA detection. This study also initiates an innovative synthetic strategy to synthesize high-quality graphenebased nanomaterials.
URI
http://dspace.inha.ac.kr/handle/10505/33180
ISSN
0959-9428
Appears in Collections:
College of Natural Science(자연과학대학) > Chemistry (화학) > Journal Papers, Reports(화학 논문, 보고서)
Files in This Item:
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