Colorimetric sensor and its preparation procedure
AssigneeMATERIAS S.r.l.
InventorsLuca DE STEFANO, Selene DE MARTINO, Mario BATTISTI, Bruno MIRANDA
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Abstract
A process for the preparation of a colorimetric device (sensor) for detecting oxidizing agents, in particular for detecting the presence of oxygen comprising or consisting of—subjecting, to UV irradiation comprised between 200 and 400 nm, a pre-polymer solution comprising at least one redox dye, at least one semiconductor material and at least one di- or tri-acrylate monomer. Such device and its use in the packaging field, e.g. for packaging food or pharmaceutical products, represent aspects of the application of said devices.
Claims21
A process for the preparation and activation of a sensor, comprising
- subjecting to UV irradiation of 200 to 400 nm a pre-polymeric solution comprising at least one redox dye, at least one semiconductor material and at least one di- or tri-acrylate monomer.
A single-layer sensor, comprising
- at least one redox dye in its leuco form,
- at least one semiconductor material, and
- a polymer matrix based on at least one di- or tri-acrylate monomer.
10-11. (canceled)
Dependencies are inferred from the claim text.