In Situ Synthesis of Thermochemically Reduced Graphene Oxide Conducting Nanocomposites

Title
In Situ Synthesis of Thermochemically Reduced Graphene Oxide Conducting Nanocomposites
Authors
박옥경함명관이성호조한익나석인Robert Vajtai이중희구본철Pulickel M. Ajayan
Keywords
graphene; thermochemical reduction; electrical conductivity; polyimide composites; nanoelectromechanical sensor
Issue Date
2012-04
Publisher
Nano letters
Citation
VOL 12, NO 4, 1789-1793
Abstract
Highly conductive reduced graphene oxide (GO) polymer nanocomposites are synthesized by a well-organized in situ thermochemical synthesis technique. The surface functionalization of GO was carried out with aryl diazonium salt including 4-iodoaniline to form phenyl functionalized GO (I-Ph-GO). The thermochemically developed reduced GO (R-I-Ph-GO) has five times higher electrical conductivity (42 000 S/m) than typical reduced GO (R-GO). We also demonstrate a R-I-Ph-GO/polyimide (PI) composites having more than 104 times higher conductivity (~1 S/m) compared to a R-GO/PI composites. The electrical resistances of PI composites with R-I-Ph-GO were dramatically dropped under ~3% tensile strain. The R-I-Ph-GO/PI composites with electrically sensitive response caused by mechanical strain are expected to have broad implications for nanoelectromechanical systems.
URI
http://pubs.kist.re.kr/handle/201004/42197
ISSN
15306984
Appears in Collections:
KIST Publication > Article
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