Porous matrix materials in optical sensing of gaseous oxygen.

The review provides comparison of porous materials that act as a matrix for luminescent oxygen indicators. These include silica-gels, sol-gel materials based on silica and organically modified silica (Ormosils), aerogels, electrospun polymeric nanofibers, metal-organic frameworks, anodized alumina, and various other microstructured sensor matrices. The influence of material structure and composition on the efficiency of oxygen quenching and dynamic response times is compared and the advantages and disadvantages of the materials are summarized to give a guide for design and practical application of sensors with desired sensitivity and response time.