Resistive Type Sensor for Humidity and Short Alcohols Detection

Abstract

Rh (I) and Pd (II) catalysts were used to prepare humidity sensitive organometallic polymers prepared from N,N-dimethylproparylamine (DMPA) or the corresponding chlorohydrate (DMPA·HCl) as monomers. Pristine and iodine doped polymers were characterized and their sensing properties were investigated and here discussed. The responses to relative humidity and short alcohols variations of sensors based on these polymeric membranes were investigated. An interesting response towards methanol and ethanol was found. Long term stability, fast response time and resistance to high humidity atmosphere, were achieved. Copyright © 2004 American Scientific Publishers. All rights reserved.