Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 113, Issue 46, Pages 12754-12762Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp906716g
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Funding
- BBSRC
- EPSRC
- Marie Curie Incoming International Fellowship
- FRRF, Daresbury Laboratory, STFC, U.K.
- Engineering and Physical Sciences Research Council [EP/G03088X/1] Funding Source: researchfish
- EPSRC [EP/G03088X/1] Funding Source: UKRI
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The photophysical properties of a series of Ru-II complexes containing benzo[i]dipyrido[3,2-a:2',3'-c]phenazine (dppn) as a ligand are reported. Transient absorption spectroscopy studies indicate that, in contrast to related Ru(dppz) complexes (dppz = dipyrido[3,2-a:2',3'-c]phenazine), the excited state of all the dppn systems is a long-lived pi pi* triplet state. Computational studies (DFT and TD-DFT) confirm that the excited state is based on the dppn ligand. Near-infrared luminescence studies reveal that the complexes are efficient singlet oxygen sensitizers with yields of 70-83%.
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