Sensors 2008, 8(4), 2331-2412; doi:10.3390/s8042331
Review

Developments in the Field of Conducting and Non-conducting Polymer Based Potentiometric Membrane Sensors for Ions Over the Past Decade

1 Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran 2 Medical Nanotechnology Research Centre, Medical Sciences/University of Tehran, Tehran, P.O. Box 14155-6451, Iran
* Author to whom correspondence should be addressed.
Received: 1 February 2008; Accepted: 2 April 2008 / Published: 3 April 2008
(This article belongs to the Special Issue Electrochemical Sensors Based on Conductive Polymers)
PDF Full-text Download PDF Full-Text [548 KB, uploaded 16 September 2008 11:02 CEST]
Abstract: Many research studies have been conducted on the use of conjugated polymers in the construction of chemical sensors including potentiometric, conductometric and amperometric sensors or biosensors over the last decade. The induction of conductivity on conjugated polymers by treating them with suitable oxidizing agents won Heeger, MacDiarmid and Shirakawa the 2000 Nobel Prize in Chemistry. Common conjugated polymers are poly(acetylene)s, poly(pyrrole)s, poly(thiophene)s, poly(terthiophene)s, poly(aniline)s, poly(fluorine)s, poly(3-alkylthiophene)s, polytetrathiafulvalenes, polynapthalenes, poly(p-phenylene sulfide), poly(p-phenylenevinylene)s, poly(3,4-ethylenedioxythiophene), polyparaphenylene, polyazulene, polyparaphenylene sulfide, polycarbazole and polydiaminonaphthalene. More than 60 sensors for inorganic cations and anions with different characteristics based on conducting polymers have been reported. There have also been reports on the application of non-conducting polymers (nCPs), i.e. PVC, in the construction of potentiometric membrane sensors for determination of more than 60 inorganic cations and anions. However, the leakage of ionophores from the membranes based on these polymers leads to relatively lower life times. In this article, we try to give an overview of Solid-Contact ISE (SCISE), Single-Piece ISE (SPISE), Conducting Polymer (CP)-Based, and also non-conducting polymer PVC-based ISEs for various ions which their difference is in the way of the polymer used with selective membrane. In SCISEs and SPISEs, the plasticized PVC containing the ionophore and ionic additives govern the selectivity behavior of the electrode and the conducting polymer is responsible of ion-to-electron transducer. However, in CPISEs, the conducting polymer layer is doped with a suitable ionophore which enhances the ion selectivity of the CP while its redox response has to be suppressed.
Keywords: Conducting polymer; sensor; ion selective electrodes; non-conducting polymer; potentiometric membrane sensor

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Faridbod, F.; Norouzi, P.; Dinarvand, R.; Ganjali, M.R. Developments in the Field of Conducting and Non-conducting Polymer Based Potentiometric Membrane Sensors for Ions Over the Past Decade. Sensors 2008, 8, 2331-2412.

AMA Style

Faridbod F, Norouzi P, Dinarvand R, Ganjali MR. Developments in the Field of Conducting and Non-conducting Polymer Based Potentiometric Membrane Sensors for Ions Over the Past Decade. Sensors. 2008; 8(4):2331-2412.

Chicago/Turabian Style

Faridbod, Farnoush; Norouzi, Parviz; Dinarvand, Rassoul; Ganjali, Mohammad R. 2008. "Developments in the Field of Conducting and Non-conducting Polymer Based Potentiometric Membrane Sensors for Ions Over the Past Decade." Sensors 8, no. 4: 2331-2412.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert