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
提供了用于确定介质中
氧气和与氧有关的分析物浓度的传感元件、传感器系统和方法。传感元件包括一个对
氧气或与氧有关的分析物具有渗透性的固态聚合物基质材料和一个共价键结合到固态聚合物基质材料上的指示剂。指示剂是一种发光的
铂族
金属聚芳香螯合物复合物,能够通过
氧气的存在来熄灭其发光。聚芳香复合物包括三个
配体,其中至少一个是一个双齿二苯基
菲咯啉。聚芳香复合物在基质材料中分布基本均匀,并通过连接臂与基质材料共价键结合。连接臂连接到二苯基
菲咯啉
配体的苯基和聚合物基质材料的骨架上。传感器系统包括本发明的传感元件、激发装置、检测器装置和处理器装置。