Fluorescent tetraruthenated porphyrins embedded in monolithic SiO2 gels by the sol-gel process

Tetraruthenated porphyrins have been embedded in SiO2 gels by the sol-gel process, with preservation of the fluorescence emission properties. No aggregation, protonation, or decomposition has been observed during the sol-gel process, owing to the chemical nature of the tetraruthenated porphyrins, which are compatible with the reaction medium of the sol-gel process.