OPTICAL OXYGEN SENSOR-BASED ON METALLOORGANIC COMPOUND IMMOBILIZED BYSOL-GEL TECHNIQUE

Optical sensors suitable for monitoring of O-2 in wafer medium were pr epared by immobilization of metallo-organic complexes in xerogels crea ted by sol-gel technique and applied to optical fibre tip or glass sli des by dipping. Tris (1, 10-phenanthroline)ruthenium (II) chloride was immobilized on the tip of optical fibre. The fluorescence spectra of the complex were sensitive to O-2 in water solution. The sensitivity o f absorption spectra of bis(histidinato)cobalt (II) to O-2 and pH was examinated both in the solution of precursors of silica sol-gel glasse s and in the complex-containing coating of glass slides.