Excited States of Metal Complexes and their Reactions

Fleischauer, Paul D.; Adamson, Arthur W.; Sartori, G.

doi:10.1002/9780470166185.ch1

Cited by 46 publications

(9 citation statements)

References 141 publications

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“…[46][47][48][49][50] Rapid thermal equilibrium between this manifold of states, okT in energy apart, happens such that PL occurs from what appears to be a single thermally equilibrated excited state, or thexi state. 51,52 Yersin et al discovered evidence for two more highest-energy states by temperature-dependent emission polarization experiments and labeled them per the D 3 0 double symmetry group, which takes into account the spin-orbit Fig. 4(b).…”

Section: A Orbitals and Electronic Transitionsmentioning

confidence: 99%

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO₂semiconductor surfaces

2009

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A critical review of light-driven interfacial charge-transfer reactions of transition-metal compounds anchored to mesoporous, nanocrystalline TiO2 (anatase) thin films is described. The review highlights molecular insights into metal-to-ligand charge transfer (MLCT) excited states, mechanisms of interfacial charge separation, inter- and intra-molecular electron transfer, and interfacial charge-recombination processes that have been garnered through various spectroscopic and electrochemical techniques. The relevance of these processes to optimization of solar-energy-conversion efficiencies is discussed (483 references).

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Section: A Orbitals and Electronic Transitionsmentioning

confidence: 99%

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO₂semiconductor surfaces

2009

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“…In Ru(II) polypyridine complexes, the cascade of photoinduced elementary events, as well as their timescales, are now well established : following light absorption into a 1 MLCT state, ultrafast and quantitative intersystem crossing occurs to populate a vibrationally hot 3 MLCT manifold (<300 fs) [36], followed by internal conversion to the lowest 3 MLCT state and vibrational cooling to the thermally equilibrated (THEXI) [37] 3 MLCT state (10-20 ps) [38] , [39]. Fluorescence of the 1 MLCT state of Ru(bpy) 3 2+ has also been observed on very short timescales [40].…”

Section: Summary Of Experimental Luminescence Datamentioning

confidence: 99%

DFT rationalization of the room-temperature luminescence properties of Ru(bpy) 3 2+ and Ru(tpy) 2 2+ : 3MLCT–3MC minimum energy path from NEB calculations and emission spectra from VRES calculations

et al. 2018

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Extensive experimental data covering 40 years of research are available on Ru(bpy) 3 2+ and Ru(tpy) 2 2+ , which are the archetypes of inorganic photochemistry. The last decade has enabled computational chemists to tackle this topic through density functional theory and to shed some new light on our old friends. For the first time, this theoretical study maps the minimum energy path linking the 3 MLCT (metal-to-ligand charge transfer) and the 3 MC (metal centred) states with the nudged elastic band (NEB) method, also providing the calculation of the corresponding energy barrier. Remarkably, the obtained data are in very good agreement with the experimental activation energies reported from variable temperature luminescence measurements. Calculation of vibrationally resolved electronic spectra (VRES) is also in excellent agreement with the experimental emission maximum and bandshape of Ru(bpy) 3 2+. Additionally, the 3 MC-GS minimum energy crossing point (MECP) was optimized for each complex. The combination of these data rationalizes the room-temperature luminescence of the bpy complex and non-luminescence of the tpy complex.

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“…For more comprehensive discussions of the photochemistry and photophysics of transition metal complexes, mostly organized according to the identity of the specific metals, the reader is directed to several excellent reviews [13][14][15][16][17][18][19][20]. In addition, Balzani and Carassiti's monograph on the photochemistry of coordination compounds [21], as well as the multi-authored volume edited by Adamson and Fleischauer [22] remain excellent introductions to the subject nearly 40 years after their publication.…”

Section: Introductionmentioning

confidence: 99%

Metal centered ligand field excited states: Their roles in the design and performance of transition metal based photochemical molecular devices

Wagenknecht¹,

Ford²

2011

Coordination Chemistry Reviews

285

292

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Excited States of Metal Complexes and their Reactions

Cited by 46 publications

References 141 publications

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO₂semiconductor surfaces

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO₂semiconductor surfaces

DFT rationalization of the room-temperature luminescence properties of Ru(bpy) 3 2+ and Ru(tpy) 2 2+ : 3MLCT–3MC minimum energy path from NEB calculations and emission spectra from VRES calculations

Metal centered ligand field excited states: Their roles in the design and performance of transition metal based photochemical molecular devices

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Excited States of Metal Complexes and their Reactions

Cited by 46 publications

References 141 publications

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO2semiconductor surfaces

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO2semiconductor surfaces

DFT rationalization of the room-temperature luminescence properties of Ru(bpy) 3 2+ and Ru(tpy) 2 2+ : 3MLCT–3MC minimum energy path from NEB calculations and emission spectra from VRES calculations

Metal centered ligand field excited states: Their roles in the design and performance of transition metal based photochemical molecular devices

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Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO₂semiconductor surfaces

Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO₂semiconductor surfaces