Conductive, electroactive polymers provide a unique platform upon which to construct intelligent materials. These polymers are capable of monitoring and respond ing to the chemical environment in which they are operational. They have properties which simplify the design and development of sensors, based on the principles of molec ular recognition. The conductive nature of the materials enables a range of electrical sig nals to be produced and this inherent electroactivity provides a unique means of triggering chemical responses. This article reviews the accomplishments of various workers in this field to demonstrate that conductive, electroactive polymers provide a basis for intelligent chemical systems. © 1991, Sage Publications. All rights reserved.