Authors
Kuldeep Singh, Anil Ohlan, Viet Hung Pham, R Balasubramaniyan, Swati Varshney, Jinhee Jang, Seung Hyun Hur, Won Mook Choi, Mukesh Kumar, SK Dhawan, Byung-Seon Kong, Jin Suk Chung
Publication date
2013
Journal
Nanoscale
Volume
5
Issue
6
Pages
2411-2420
Publisher
Royal Society of Chemistry
Description
The development of high-performance shielding materials against electromagnetic pollution requires mobile charge carriers and magnetic dipoles. Herein, we meet the challenge by building a three-dimensional (3D) nanostructure consisting of chemically modified graphene/Fe3O4(GF) incorporated polyaniline. Intercalated GF was synthesized by the in situ generation of Fe3O4 nanoparticles in a graphene oxide suspension followed by hydrazine reduction, and further in situ polymerization with aniline to form a polyaniline composite. Spectroscopic analysis demonstrates that the presence of GF hybrid structures facilitates strong polarization due to the formation of a solid-state charge-transfer complex between graphene and polyaniline. This provides proper impedance matching and higher dipole interaction, which leads to the high microwave absorption properties. The higher dielectric loss (ε′′ = 30) and …
Scholar articles
K Singh, A Ohlan, VH Pham, R Balasubramaniyan… - Nanoscale, 2013