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Conducting Polymers With Chemically Sensitive Traps And Barriers: New Molecule-Based Sensors

Published online by Cambridge University Press:  16 February 2011

Timothy M. Swager  and
Michael J. Marsella
Timothy M. Swager
Affiliation:
Department of Chemistry and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA 19104–6323
Michael J. Marsella
Affiliation:
Department of Chemistry and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA 19104–6323
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Abstract

We present a general approach for the formation of conducting polymer based sensory materials which employ well-known Molecular recognition elements. These Methods are based upon impeding carrier transport through a conductive polymer's backbone with a barrier or by localizing a carrier with a trap. We have designed polythiophene derivatives which exhibit large changes in bandgap in the presence of specific ions. These Materials are based upon novel crown ether containing bithiophene monomers and we will discuss the details of the synthesis of the monomers and polymers. Sensory polymers which are selective for K+ and Na+ will be described. In such Materials, specific ions induce a twisting of the polymer's backbone.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 328: Symposium Q – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1993 , 263
Copyright
Copyright © Materials Research Society 1994

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References

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