PT (Ⅱ) MULTULTIUCLEAR COMPLEX WITH POLY(ETHYNYLTHIOPHENE) BRIDGE AS SENSITIVE MEMBRANE FOR THE DETECTION OF CHEMICAL VAPOURS

摘要

The aim of our recent research is the synthesis of new molecules suitable for applications in gas sensors. In this work we extended our studies on the sensitive behaviour of a polymeric material (Pt-TRI) prepared from a square planar Pt(Ⅱ) complex and the organic spacer [2-ethynylthiophene]2,5 bis-ethynylthiophene. The responses to relative humidity and alcohol vapours variations of sensors based on these organometallic polymeric membrane were investigated. A interesting response towards methanol and ethanol was found. Moreover current vs temperature measurements were performed in the range from 20°C to 75°C with different applied voltage in order to evaluate the activation energy of the polymeric membrane.