Optical sensors with reflective materials and methods for...

G - Physics – 01 – N

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G01N 21/64 (2006.01)

Patent

CA 2318948

Provided is an optical sensor including a support and a detection layer, wherein the detection layer includes: (a) a luminescent material wherein the luminescence intensity of the luminescent material varies as the amount of an analyte varies; (b) a reflective material having a highly efficient reflectance of the wavelengths of excitation and of emission of the luminescent material; and (c) a polymeric binder to support and hold together the luminescent material and the reflective material. Such an optical sensor can be advantageously used in the detection of gaseous, ionic, and nonionic analytes in highly scattering samples. Also provided are methods for the manufacture of such optical sensors.

Cette invention concerne un capteur optique qui comprend un support ainsi qu'une couche de détection, laquelle couche comprend les éléments suivants: (a) un matériau luminescent dont l'intensité de luminescence varie au fur et à mesure que varie la quantité d'un analyte; (b) un matériau réfléchissant qui possède une grande efficacité de réflectance des longueurs d'ondes d'excitation et d'émission du matériau luminescent; et enfin (c), un adhésif polymère qui va supporter le matériau luminescent et le matériau réfléchissant et les maintenir ensemble. Ce capteur optique peut être utilisé avantageusement lors de la détection d'analytes gazeux, ioniques et non ioniques dans des échantillons à diffusion élevée. Cette invention concerne également des procédés de fabrication de ces capteurs optiques.

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