Porphyrins based optical-sensors for volatile compounds detection

Detection of volatile compounds is important in many applications and in general for the analysis of the headspaces of solid or liquid samples. For this applications sensors based on mass transduction (QMB and SAW) coated with some adsorbent material have been proposed. These sensors suffers of very poor selectivity and also when some mechanism to enhance selectivity is utilized the always present weak interactions are sufficiently large to broad the selectivity.