I&EC 23 |
| While conjugated polymers have been used as sensors, the utility of such polymers has not been fully appreciated and capitalized upon. Conjugated polymers hold advantages over traditional small molecule sensors in the ease of synthesis, multivalent nature, and built-in transduction mechanisms. Poly(thiophene)s are of interest because of their enhanced stability and sensitivity to interactions between solution phase analytes and side-chain functionality. Perturbations of the side chain can affect main-chain planarity as well as influencing polymer-polymer interactions often leading to changes in the optical absorbance. We have found that HT-2,5-poly(thiophene-3-propionic acid) can be used with standard pattern recognition protocols for the sensing and discrimination of various amines. Varying the counterion of the polymer with different metals (i.e. Cu, Ni, Co) leads to obvious color changes upon addition of various amines. The generation of the metal-polythiophene hybrid sensors and their usefulness as a detector for biogenic amines will be discussed. |
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Detection of Biological and Chemical Agents in Warfare and Food Safety (Sponsored by Novel Chemistry with Industrial Applications)
1:30 PM-4:30 PM, Sunday, 26 March 2006 Georgia World Congress Center -- B313B, Oral
Division of Industrial and Engineering Chemistry |