Photochemistry and Photophysics of Coordination Compounds: Ruthenium

Campagna, Sebastiano; Puntoriero, Fausto; Nastasi, Francesco; Bergamini, Giacomo; Balzani, Vincenzo

doi:10.1007/128_2007_133

Cited by 802 publications

(971 citation statements)

References 436 publications

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“…The {Ru(tpy)2} chromophore (tpy = 2,2':6',2''-terpyridine) is one of the most 31 extensively studied domains 1 essentially non-emissive, 3 judicious choice of electron-donating or accepting 38 substituents can lead to significant enhancement of emission properties. 4 …”

Section: Introduction 30mentioning

confidence: 99%

Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes

et al. 2014

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Section: Introduction 30mentioning

confidence: 99%

Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes

et al. 2014

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“…Such a system would extend current synthetic routes and avoid the use of the acetylenic spacer unit, previously used to augment solar-to-electrical energy conversion efficiency. 6 In this way two essentially isoenergetic triplet excited states would be provided: a 3 MLCT ([Ru(terpy) 2 ] 2+ , λ ∼ 629 nm) 14,15 and a HBC-localised 3 ππ* excited state (HBC, λ ∼ 578 nm). 10,16,17 Excitation into one of these might then give rise to efficient energy equilibration between the two complementary energy levels and substantially prolong the excited state lifetimes.…”

Section: Introductionmentioning

confidence: 99%

Terpyridine-fused polyaromatic hydrocarbons generated via cyclodehydrogenation and used as ligands in Ru(ii) complexes

et al. 2012

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A series of novel fused 4′-substituted 2,2′ : 6′,2′′-terpyridine ligands and their ruthenium(II) complexes were prepared. The unusual 4′-substituents comprised 2,3,4,5-pentaphenylbenzene and its tert-butyl derivative (1 and 2) and the products from oxidative cyclodehydrogenation, i.e. polyaromatic fragments consisting of ten or thirteen fused benzene rings (3 and 4). The syntheses of all the ligands are discussed in terms of the demands and limitations of the Scholl reaction. The optical properties of the ligands, along with the single-crystal X-ray structures of 1 and 2, are presented. The latter show that the pentaphenylbenzene and terpyridine appendages of 1 and 2 are perpendicular in the solid state. Despite the inclusion of the large organic chromophore the absorption and emission properties of the Ru(II) bis-terpy complexes (of ligands 1, 2 and 3) were found to be comparable to those of [Ru(terpy) 2 ] 2+ . They are non-emissive at room temperature but emit at 77 K with excited state lifetimes of 11-12 μs.

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“…Since the decay of triplet excited state to singlet ground state is a spin-forbidden process, the triplet excited states of transition metal compounds commonly have a lifetime in the microsecond range, which is long-lived enough to allow for bimolecular reactions/processes such as energy transfer and/or electron transfer to occur. Perhaps the most extensively studied class of metal compounds in this regard is tris(2,2 -bipyridine)ruthenium(II) ([Ru(bpy) 3 ] 2+ ) and its derivatives [7]. The wide scope of photochemistry demonstrated by [Ru(bpy) 3 ] 2+ has subsequently stimulated immense research activities on the photophysical and photochemical properties of other transition metal compounds including those of platinum [8], iridium [9], osmium [10,11] and more recently gold [12].…”

Section: Introductionmentioning

confidence: 99%

Light-induced catalytic and cytotoxic properties of phosphorescent transition metal compounds with a d ⁸ electronic configuration

Zou

Sun

et al. 2013

Phil. Trans. R. Soc. A.

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Transition metal compounds are well documented to have diverse applications such as in catalysis, light-emitting materials and therapeutics. In the areas of photocatalysis and photodynamic therapy, metal compounds of heavy transition metals are highly sought after because they can give rise to triplet excited states upon photoexcitation. The long lifetimes (more than 1 μs) of the triplet states of transition metal compounds allow for bimolecular reactions/processes such as energy transfer and/or electron transfer to occur. Reactions of triplet excited states of luminescent metal compounds with oxygen in cells may generate reactive oxygen species and/or induce damage to DNA, leading to cell death. This article recaps the recent findings on photochemical and phototoxic properties of luminescent platinum(II) and gold(III) compounds both from the literature and experimental results from our group.

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Photochemistry and Photophysics of Coordination Compounds: Ruthenium

Cited by 802 publications

References 436 publications

Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes

Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes

Terpyridine-fused polyaromatic hydrocarbons generated via cyclodehydrogenation and used as ligands in Ru(ii) complexes

Light-induced catalytic and cytotoxic properties of phosphorescent transition metal compounds with a d ⁸ electronic configuration

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Photochemistry and Photophysics of Coordination Compounds: Ruthenium

Cited by 802 publications

References 436 publications

Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes

Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′:6′,2″-terpyridine) complexes

Terpyridine-fused polyaromatic hydrocarbons generated via cyclodehydrogenation and used as ligands in Ru(ii) complexes

Light-induced catalytic and cytotoxic properties of phosphorescent transition metal compounds with a d 8 electronic configuration

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Light-induced catalytic and cytotoxic properties of phosphorescent transition metal compounds with a d ⁸ electronic configuration