Organic compounds sensors based on light-activated gels

CARLOS A. RINALDI; SUSANA BOEYKENS; DANIEL RODRIGUEZ; JUAN BONAPARTE; MAXIMILIANO PEREZ; ALFREDO BOSELLI; ALBERTO LAMAGNA; ALEJANDRO FRACAROLI; ALEJANDRO GRANADOS,; R.HOYOS DE ROSSI

SENSORS

MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI

Año: 2010

1424-8220

Some polymers are intrinsically responsible for a sensor function; otherpolymers are made to augment the sensing operation through modification ofthe polymer by functionalization. Polymeric thin film deposition technology andthe design of more active and sensor specific polymers will lead to successfulminiature, multiple sensor arrays. A sensor was fabricated for the detection oforganic compounds (alcohol, acetone, toluene, xylene) from a polysaccharidegel combined with a chromium pentacarbonyl complex of 5-methyl-3H-1,2-dithiol-3-thione. It was deposited a film on an Ti- Au electrode and thencharacterised the resistance response. The UV, V and IR irradiation lightactivates the gel sensors and the results exhibited a procedure for detectingsaturated vapour of organic compounds at room temperature.