Ruthenium(II) MLCT excited states. Stabilization toward ligand loss in rigid media

Adelt M; Devenney M; Meyer TJ; Thompson DW; Treadway JA

Inorganic Chemistry, Vol.37, No.11, 2616-2617, 1998

Adelt M, Devenney M, Meyer TJ, Thompson DW, Treadway JA

Photosubstitution and/or photoisomerization in cis-[Ru(bpy)(2)(py)(2)](PF6)(2) and trans-[Ru(bpy)(2)(4Etpy)(2)](PF6)(2) or the molecular assemblies cis-[Ru(bpy)(2)(MQ(+))(2)](PF6)(4) and trans-[Ru(bpy)(2)(MQ(+))(2)](PF6)(4) are greatly inhibited in the rigid matrixes poly(methyl methacrylate) (PMMA) films and silica sol-gel monoliths. There can also be profound changes in photophysical properties as illustrated below for emission from cis-[Ru(bpy)(2)(py)(2)](PF6)(2) in CH3CN and in the silica sol-gel.

Keywords:PHOTOSUBSTITUTION REACTIONS;COMPLEXES;TEMPERATURE;PHOTOPHYSICS;RU(II)-POLYPYRIDINE;PHOTOCHEMISTRY;LUMINESCENCE;RU(BPY)32+;INCREASE