Fluorescence based oxygen sensor systems
US6664111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2001 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Oct 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/209163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sensing elements, sensor systems and methods for determining the concentration of oxygen and oxygen-related analytes in a medium are provided. The sensing element comprises a solid polymeric matrix material that is permeable to oxygen or an oxygen related analyte and an indicator that is covalently bonded to the solid polymeric matrix material. The indicator is a luminescent platinum group metal polyaromatic chelate complex capable of having its luminescence quenched by the presence of oxygen. The polyaromatic complex comprises three ligands, at least one of which is a bidentate diphenylphenanthroline. The polyaromatic complex is distributed substantially homogenously throughout the matrix material and is covalently bonded to the matrix material via a linker arm. The linker arm is attached to a phenyl group of a diphenylphenanthroline ligand and to the backbone of the polymeric matrix material. The sensor systems comprise the present sensing element, an excitation assembly, a detector assembly, and a processor assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.