TITLE

Electrical conductivity of hollow polyaniline microspheres synthesized by a self-assembly method

AUTHOR(S)
Long, Yunze; Chen, Zhaojia; Ma, Yongjun; Zhang, Ze; Jin, Aizi; Gu, Changzhi; Zhang, Lijuan; Wei, Zhixiang; Wan, Meixiang
PUB. DATE
March 2004
SOURCE
Applied Physics Letters;3/22/2004, Vol. 84 Issue 12, p2205
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this letter, we report the electrical properties of hollow polyaniline (PANI) microspheres. β-naphthalene sulfonic acid (NSA) and salicylic acid (SA) doped PANI microspheres were synthesized by a self-assembly method. The room-temperature conductivity is 8.6×10[sup -2] S/cm for PANI–NSA microspheres (0.8–2 μm in outer diameter) and 5.6×10[sup -4] S/cm for PANI–SA microspheres (3–7 μm in outer diameter). The conductivity of an individual PANI–SA microsphere is measured directly by a two-probe technique, about 8×10[sup -2] S/cm (which is two orders of magnitude higher than that of a PANI–SA microsphere’s pellet). The measurements of conductivity, I–V curve, and magnetoresistance demonstrate that the electrical properties of PANI microspheres are dominated by the intersphere contacts due to the sample’s microscopic inhomogeneity. © 2004 American Institute of Physics.
ACCESSION #
12530464

 

Related Articles

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics