ASPECTS ON FUNDAMENTS AND APPLICATIONS OF CONDUCTING POLYMERS Edited by Artur de Jesus Motheo           Aspects on Fundaments and Applications of Conducting Polymers Edited by Artur de Jesus Motheo Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2011 InTech All chapters are Open Access distributed under the Creative Commons Attribution 3.0 license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. As for readers, this license allows users to download, copy and build upon published chapters even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book. Publishing Process Manager Molly Kaliman Technical Editor Teodora Smiljanic Cover Designer InTech Design Team First published January, 2012 Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechweb.org Aspects on Fundaments and Applications of Conducting Polymers, Edited by Artur de Jesus Motheo p. cm. ISBN 978-953-51-0385-1 free online editions of InTech Books and Journals can be found at www.intechopen.com   Contents  Preface IX Part 1 Fundaments 1 Chapter 1 Triplet Paramagnetic Centers in Conducting Polymers – Study by ESR and SQUID 3 A.V. Kulikov Part 2 Metallic Corrosion 17 Chapter 2 Adhesion of Polyaniline on Metallic Surfaces 19 Artur de Jesus Motheo and Leandro Duarte Bisanha Part 3 Sensors 41 Chapter 3 Application of Conducting Polymers in Electroanalysis 43 Mohammed ElKaoutit Chapter 4 Ionophore/Lipid Bilayer Assembly on Soft Organic Electrodes for Potentiometric Detection of K + Ions 67 Osvaldo Abreu, Jeannine Larrieux and Kalle Levon Chapter 5 Biomimetic Sensing – Actuators Based on Conducting Polymers 87 Joaquín Arias-Pardilla, Toribio F. Otero, José G. Martínez and Yahya A. Ismail Part 4 Nanotechnology 113 Chapter 6 Comparative Studies of Chemically Synthesized Polymers Aniline and o-Toluidine Nanocomposite Using Algerian Montmorillonite 115 Benyoucef Adelghani, Yahiaoui Ahmed, Hachemaoui Aicha, Sanchís Carlos and Morallon Emilia VI Contents Chapter 7 Electrodeposition of Polypyrrole Films: Influence of Fe 3 O 4 Nanoparticles and Platinum Co-Deposition 137 Paula Montoya, Tiffany Marín, Jorge A. Calderón and Franklin Jaramillo Chapter 8 Conducting Polypyrrole Shell as a Promising Covering for Magnetic Nanoparticles 159 Alexandrina Nan, Izabell Craciunescu and Rodica Turcu Part 5 Membranes 183 Chapter 9 Ion Conductive Polymer Electrolyte Membranes and Fractal Growth 185 Shahizat Amir, Nor Sabirin Mohamed and Siti Aishah Hashim Ali   Preface  It's been 35 years since MacDiarmid performed chemical and electrochemical doping of polyacetylene, initiating an era of polymer materials with properties hitherto attributed to metals, the conducting polymers or, more precisely, intrinsically conducting polymers (ICPs). In this period there have been many advances in both fundamental aspects of these materials and in the discoveries of new applications.Given the dynamics in this area, we understand that updates on the different aspects involved are necessary to follow these developments taking place around the world. With this objective we drew upon a number of distinguished authors, to contribute to this publication. The chapters within this book have been classified according to their characteristics in fundaments and applications. Therefore, the first two chapters are dedicated to studies about permittivity, conductivity and triplet paramagnetic centers in conducting polymers. The applied aspects were organized covering the following subjects: the use of conducting polymers to minimize metallic corrosion, different points of view on the use of conducting polymers in various sensors, the use of conducting polymers to obtain nanomaterials, and finally, a fractal view of a conducting polymer membrane. Finally, it was a privilege to interact with the researchers who contributed to this book. I would like to take this opportunity to thank everyone for their dedication and for meeting deadlines. Special thanks must be made to Ms. Molly Kaliman, Publishing Process Manager, for the attention and commitment to this task.  Professor Artur de Jesus Motheo Interfacial Electrochemistry Group, Department of Physical Chemistry, Institute of Chemistry of Sao Carlos, University of São Paulo Brazil . ASPECTS ON FUNDAMENTS AND APPLICATIONS OF CONDUCTING POLYMERS Edited by Artur de Jesus Motheo           Aspects on Fundaments and Applications of Conducting Polymers. function F(E), which is constant between E 1 and E 2 and zero at other values of E, was used. Fig. 2 Aspects on Fundaments and Applications of Conducting Polymers 6 shows both linear and. metallic corrosion, different points of view on the use of conducting polymers in various sensors, the use of conducting polymers to obtain nanomaterials, and finally, a fractal view of a conducting