Hollow Poly(aniline- co -pyrrole)–Fe 3 O 4 Composite Nanospheres: Synthesis and Characterization

Yaofeng Zhu1, Qing-Qing Ni2 3 ∗, Li Zhang4, and Toshiaki Natsuki3 1Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda 386-8576, Japan 2Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education, Zhejiang Sci.-Tech. University, Hangzhou 310018, P. R. China 3Department of Functional Machinery and Mechanics, Shinshu University, 3-15-1 Tokida, Ueda 386-8576, Japan 4Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan