Luminescence lifetime temperature sensing based on sol-gels and poly(acrylonitrile)s dyed with ruthenium metal-ligand complexes

Communication: Temperature-sensitive materials based on the temperature pro be ruthenium-tris-1,10-phenathroline (Ru(phen)) are presented. As its lumin escence, the intensity and decay time of which are both temperature sensiti ve, is quenched by oxygen, Ru(phen) needs to be encapsulated in materials w ith very low permeability to molecular oxygen. Its incorporation into sol-g els and poly(acrylonitrile)s (PANs) is investigated here and it is shown th at the resulting materials can be deposited onto optical fibers for use as temperature optodes.