title: In situ synthesis of thermochemically reduced graphene oxide conducting nanocomposites.
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 10(4) 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.
authors.affiliation: Institute of Advanced Composites Materials, Korea Institute of Science and Technology 864-9 Dunsan-ri, Bongdong-eup, Wanju-gun, Jeollabuk-do, 565-902, Korea.
authors.forename: Ok-Kyung
authors.initials: OK
authors.lastname: Park
authors.forename: Myung Gwan
authors.initials: MG
authors.lastname: Hahm
authors.forename: Sungho
authors.initials: S
authors.lastname: Lee
authors.forename: Han-Ik
authors.initials: HI
authors.lastname: Joh
authors.forename: Seok-In
authors.initials: SI
authors.lastname: Na
authors.forename: Robert
authors.initials: R
authors.lastname: Vajtai
authors.forename: Joong Hee
authors.initials: JH
authors.lastname: Lee
authors.forename: Bon-Cheol
authors.initials: BC
authors.lastname: Ku
authors.forename: Pulickel M
authors.initials: PM
authors.lastname: Ajayan
mesh_terms: D004553:Electric Conductivity; D006108:Graphite / Q000737:chemistry*; D015394:Molecular Structure; D053761:Nanocomposites / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000138:chemical synthesis* / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature
chemical_list: D010087:Oxides; D011108:Polymers; D006108:Graphite