Sol-gel encapsulated hexanuclear clusters for oxygen sensing...

Chemistry: analytical and immunological testing – Oxygen containing

Reexamination Certificate

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C073S114730, C250S459100, C356S041000, C436S136000, C516S013000, C422S091000

Reexamination Certificate

active

07858380

ABSTRACT:
A light modifying ceramic composition comprises an oxygen permeable sol-gel matrix and a lumophore held on the matrix. In particular, the lumophore of the invention is a hexanuclear molybdenum/tungsten core having 12 anionic ligands and two ligands that are uncharged. Uncharged ligands include organic nitriles, organic phosphines, and organic arsines. In one embodiment, the ceramic composition containing the lumophore and the sol-gel matrix is applied to the end of an optical fiber to provide a remote oxygen sensor. The sensors are useful for in situ biological monitoring of oxygen either in vivo or in vitro, and in time dependent control of combustion processes such as an automobile or power plant.

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