GAS SENSOR COMPRISING A GAS SENSITIVE CYCLODEXTRIN LAYER COVALENTLY BONDED TO A SEMICONDUCTING SUBSTRATE AND METHOD FOR ITS PREPARATION

摘要

A chemical sensor for gases, comprising a layer of semiconductor material, a layer of organic molecules bound covalently to the surface of the semiconductor layer by a direct carbon-semiconductor surface atom bond, and a layer of porous material, characterised in that the organic molecule layer comprises cyclodextrin derivatives.