In Situ Synthesis of Thermochemically Reduced Graphene Oxide Conducting Nanocomposites
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- 作者：Ok-Kyung Park ; Myung Gwan Hahm ; Sungho Lee ; Han-Ik Joh ; Seok-In Na ; Robert Vajtai ; Joong Hee Lee ; Bon-Cheol Ku ; Pulickel M. Ajayan
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：April 11, 2012
- 年：2012
- 卷：12
- 期：4
- 页码：1789-1793
- 全文大小：323K
- 年卷期：v.12,no.4(April 11, 2012)
- ISSN：1530-6992
文摘
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鈥?00 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.