Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride complex 

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Luminescent oxygen probe in optic sensors^1,2; Studies on oxygen in skin^3,4

Ruthenium-tris(4,7-diphenyl-1,10-phenanthroline) dichloride (Ru(dpp)) and Tris(4,7-diphenyl-1,10-phenanthroline)-ruthenium hexafluorophosphate (Ru(dpp)₃(PF₆)₂) have been widely used as probes for luminescent detection and quantitation of oxygen.
The fluorescence of both dyes (abs. λ_max 455 nm, luminescence λ_max 613 nm) is strongly reduced by molecular oxygen due to dynamic quenching. Therefore, it is a viable oxygen probe based on either measurement of intensity or decay time.
Ruthenium-tris(4,7-diphenyl-1,10-phenanthroline) dichloride has been used for (fiber) optic sensors, studies on oxygen in skin and skin tumors, measurement of oxygen flux through skin and for oxygen imaging.

for fluorescence

BioChemika

λ_ex 455 nm; λ_em 615 nm in 0.1 M phosphate pH 7.0

DMF: soluble

chloroform: soluble

ethanol: soluble

methanol: soluble

1. J.R. Bacon, J.N. Demas Anal. Chem. 59, 2780, (1987)

2. I. Klimant, O.S. Wolfbeis Anal. Chem. 67, 3160, (1995)

3. W.L. Rumsey et al. Science 241, 1649, (1988) abstract

4. G. Liebsch et al. Appl. Spectroscopy 54, 548, (2000)

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