Biosensors Development Based on Potential Target of Conducting Polymers by ProQuest

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In the present review an attempt has been made to describe the salient features of biosensors with conducting polymers and their wide applications. Biosensors have become indispensable modern-days which offer high performances that are superior to any other diagnostic devices. Conducting polymers (CPs) conduct electricity in their normal state due to the presence of conjugated carbon-carbon bonds. Theses conjugated polymers possess interesting and useful properties due to their delocalized electron systems. The outcome is a material that combines the electrical properties of a semiconductor or a metal with the useful mechanical or other physical properties and processing advantage of a polymer. The use of CPs is being investigated for practical applications in electronic and optoelectronic devices and although stability and processing problems still have to be overcome for worldwide acceptance, the potential for these materials is immense. [PUBLICATION ABSTRACT]

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									                      Sensors & Transducers Journal, Vol. 104, Issue 5, May 2009, pp. 1-18


                                                      Sensors & Transducers
                                                                                           ISSN 1726-5479
                                                                                            © 2009 by IFSA
                                                                               http://www.sensorsportal.com




           Biosensors Development Based on Potential Target
                       of Conducting Polymers
                               1
                                Ravindra P. Singh and 1,2Jeong-Woo Choi
                           1
                        Interdisciplinary program of Integrated Biotechnology
                       2
                      Department of Chemical and Biomolecular Engineering,
                 Sogang University, 1 Sinsoo-Dong, Mapo-Gu, Seoul 121-742, Korea
                           Tel.: +82-02-706-9838, fax: +82-02-3273-0331
                        E-mail: rpsnpl69@gmail.com, jwchoi@sogang.ac.kr


             Received: 3 April 2009 /Accepted: 19 May 2009 /Published: 25 May 2009


Abstract: In the present review an attempt has been made to describe the salient features of biosensors
with conducting polymers and their wide applications. Biosensors have become indispensable modern-
days which offer high performances that are superior to any other diagnostic devices. Conducting
polymers (CPs) conduct electricity in their normal state due to the presence of conjugated carbon-
carbon bonds. Theses conjugated polymers possess interesting and useful properties due to their
delocalized electron systems. The outcome is a material that combines the electrical properties of a
semiconductor or a metal with the useful mechanical or other physical properties and processing
advantage of a polymer. The use of CPs is being investigated for practical applications in electronic
and optoelectronic devices and although stability and processing problems still have to be overcome
for worldwide acceptance, the potential for these materials is immense. Copyright © 2009 IFSA.

Keywords: Biosensors, Conducting polymers, Polyaniline, Polypyrrole, Immunosensor



1. Introduction
A biosensor is an analytical measuring tool comprised of a biological element of known molecular
properties tightly coupled to a physical transducer responsible for converting the biological signal into
quantifiable information and useful in various fields (Fig. 1 and 2) [1]. Therefore, the biosensor
selectivity is induced by the immobilization, in the sensitive area of the detector, of the biological
component (enzyme, DNA receptor, antibody, antigen, microorganism, cell, etc.) specific to the target

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                      Sensors & Transducers Journal, Vol. 104, Issue 5, May 2009, pp. 1-18

analyte. The molecular recognition corresponds to the association of the biological element and its
target molecule
								
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