US 2011/0236986 A1 · SENSOR MATERIAL AND USES THEREOF TO SIMULTANEOUSLY SENSE TWO ANALYTES

Abstract

A sensor material of the type comprising a long-decay photoluminescent, protonable dye embedded in a suitable polymeric matrix, is used for generating a specific optical response to two different analytes present in a sample, thus allowing selective determination of the two analytes in the sample. Also described is a method for the simultaneous sensing of a first and second analyte in a sample. The method comprises the steps of irradiating a sensor material of the type comprising a long-decay photoluminescent protonable dye embedded in a suitable polymeric matrix with light of one or two wavelengths, determining photoluminescence intensity and lifetime signals originating from the sensor, and correlating the photoluminescence intensity signal with a concentration of the first analyte and the photoluminescence lifetime signal(s) with the concentration of the second analyte.

Claims16

Dependent claims

A method for the simultaneous quantitative sensing/determination of two analytes in a sample, in which a first analyte is oxygen and a second analyte is selected from pH(H+ or OH−) and acidic/basic gaseous ions, which method comprises the steps of:

irradiating a sensor material with light of one or two wavelengths,
determining photoluminescence lifetime and intensity signals originating from the sensor, and
correlating the photoluminescence intensity signal with a concentration of the oxygen in the sample and the photoluminescence lifetime signal with the pH or the concentration of the acidic/basic gaseous ions,
wherein the sensor comprises a long decay photoluminescent protonable dye embedded in a polymer, in which the dye in a phosphorent platinum (II) or palladium(II) porphyrin dye substituted with a pH-responsive Schiff base.

1 more element

A system for the simultaneous quantitative sensing/determination of two analytes in a sample, in which a first analyte is oxygen and a second analyte is selected from pH(H+ or OH−) and acidic/basic gaseous ions, the system comprising:

a sensor comprising a long decay photoluminescent protonable dye embedded in a polymer, in which the dye in a phosphorent platinum (II) or palladium(II) porphyrin dye substituted with a pH-responsive Schiff base;
means for irradiating the sensor material with light of one or two wavelengths;
means for measuring a photoluminescence lifetime signal of light originating from the sensor material;
means for measuring a photoluminescence intensity signal of light originating from the sensor material;
and
optionally, processing means for correlating the photoluminescence lifetime signal with a concentration of the second analyte and for correlating the photoluminescence intensity signal(s) with a concentration of the first analyte,

3 more elements

Dependencies are inferred from the claim text.

Sensor material and uses thereof to simultaneously sense two analytes

Life of this patent

Sensor material and uses thereof to simultaneously sense two analytes

Life of this patent

Abstract

Claims16