We thank Prof. A. G. MacDiarmid, Dr. G. R. Dieckmann and Dr. M. Chen of Wyatt Technology Corp. for helpful discussions and The University of Texas at Dallas for financial support.
Fibrillar Growth in Polyaniline†
Article first published online: 26 MAY 2006
Copyright © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 16, Issue 9, pages 1145–1152, June, 2006
How to Cite
Zhang, X., Kolla, H. S., Wang, X., Raja, K. and Manohar, S. K. (2006), Fibrillar Growth in Polyaniline. Adv. Funct. Mater., 16: 1145–1152. doi: 10.1002/adfm.200500478
- Issue published online: 26 MAY 2006
- Article first published online: 26 MAY 2006
- Manuscript Accepted: 7 FEB 2006
- Manuscript Received: 23 JUL 2005
- Microstructures, polymeric;
- Polymeric materials;
Large, colorless aggregates are observed during the induction period of a chemical oxidative polymerization of aniline in dilute aqueous acids using an ammonium peroxydisulfate oxidant. Observed for the first time by static and dynamic light-scattering (LS) measurements, these aggregates are believed to be anilinium–peroxydisulfate ion clusters whose shape (spherical or rodlike) plays an important role in the overall morphology of the emeraldine salt formed (granular or fibrillar). The role of these aggregates in influencing the morphology of polyaniline is further evaluated under a variety of reaction conditions, for example, varying ionic strength, concentration, temperature, nitrogen substitution, and so forth.