Photosubstitution reactions in ruthenium(II) trisdiimine complexes: Implications for photoredox catalysis

Luis, Ena T.; Iranmanesh, Hasti; Beves, Jonathon E.

doi:10.1016/j.poly.2018.11.057

Cited by 19 publications

(23 citation statements)

References 173 publications

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“…In the absence of an external quencher, the MLCT excited state lifetime relaxes to the ground state by three processes: (i) radiative decay through photoluminescence, (ii) nonradiative decay, and (iii) thermal population of ligand-field (LF) excited state(s). The latter process often leads to irreversible ligand-loss chemistry. , Equation is used to characterize the excited-state lifetime, where Δ E represents the activation energy between the MLCT state and the LF state while k r and k nr are the radiative and nonradiative rate constants. Decay through the LF states is often included in k nr , such that and the quantum yield for photoluminescence, .…”

Section: Halide Photoredox Chemistry With Metal-to-ligand Charge-tran...mentioning

confidence: 99%

“…The latter process often leads to irreversible ligandloss chemistry. 303,304 Equation 11 is used to characterize the excited-state lifetime, where ΔE represents the activation energy between the MLCT state and the LF state while k r and k nr are the radiative and nonradiative rate constants. Decay through the LF states is often included in k nr , such that…”

Section: Halide Photoredox Chemistry With Metal-to-ligand Charge-tran...mentioning

confidence: 99%

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Halide Photoredox Chemistry

et al. 2019

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Halide photoredox chemistry is of both practical and fundamental interest. Practical applications have largely focused on solar energy conversion with hydrogen gas, through HX splitting, and electrical power generation, in regenerative photoelectrochemical and photovoltaic cells. On a more fundamental level, halide photoredox chemistry provides a unique means to generate and characterize one electron transfer chemistry that is intimately coupled with X−X bond-breaking and -forming reactivity. This review aims to deliver a background on the solution chemistry of I, Br, and Cl that enables readers to understand and utilize the most recent advances in halide photoredox chemistry research. These include reactions initiated through outer-sphere, halide-to-metal, and metal-toligand charge-transfer excited states. Kosower's salt, 1-methylpyridinium iodide, provides an early outer-sphere charge-transfer excited state that reports on solvent polarity. A plethora of new inner-sphere complexes based on transition and main group metal halide complexes that show promise for HX splitting are described. Long-lived charge-transfer excited states that undergo redox reactions with one or more halogen species are detailed. The review concludes with some key goals for future research that promise to direct the field of halide photoredox chemistry to even greater heights. CONTENTS 1. Introduction, Background, and Motivation

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Section: Halide Photoredox Chemistry With Metal-to-ligand Charge-tran...mentioning

confidence: 99%

Section: Halide Photoredox Chemistry With Metal-to-ligand Charge-tran...mentioning

confidence: 99%

Halide Photoredox Chemistry

et al. 2019

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“…79 The thermal population of the 3 MC excited-state led predominantly to non-radiative deactivation back to the ground state, but also to ligand-loss. 82,83 As a consequence, a smaller population of the 3 MC induced a much higher photostability for both dinuclear complexes compared to [Ru(bpy)3] 2+ . 75,84 Photophysical schemes and PL quantum yields of the 4 th 3 MLCT…”

Section: Variable Temperature Experimentsmentioning

confidence: 99%

Tuning the excited-state deactivation pathways of dinuclear ruthenium(ii) 2,2′-bipyridine complexes through bridging ligand design

et al. 2020

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“…Ruthenium materials have proven potentially useful in water treatments [73] but have most frequently been studied in relation to hydrogen generation [179][180][181].…”

Section: Recent Results Related To Photocatalysis and Catalyzed Ozonation For Water Treatment Using Similar Catalysts To Those Studied Inmentioning

confidence: 99%

Characteristics and Behavior of Different Catalysts Used for Water Decontamination in Photooxidation and Ozonation Processes

et al. 2020

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The objective of this study was to summarize the results obtained in a wide research project carried out for more than 15 years on the catalytic activity of different catalysts (activated carbon, metal–carbon xerogels/aerogels, iron-doped silica xerogels, ruthenium metal complexes, reduced graphene oxide-metal oxide composites, and zeolites) in the photooxidation (by using UV or solar radiation) and ozonation of water pollutants, including herbicides, naphthalenesulfonic acids, sodium para-chlorobenzoate, nitroimidazoles, tetracyclines, parabens, sulfamethazine, sodium diatrizoate, cytarabine, and surfactants. All catalysts were synthesized and then texturally, chemically, and electronically characterized using numerous experimental techniques, including N2 and CO2 adsorption, mercury porosimetry, thermogravimetric analysis, X-ray diffraction, Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, diffuse reflectance UV–vis spectroscopy, photoluminescence analysis, and transmission electron microscopy. The behavior of these materials as photocatalysts and ozonation catalysts was related to their characteristics, and the catalytic mechanisms in these advanced oxidation processes were explored. Investigations were conducted into the effects on pollutant degradation, total organic carbon reduction, and water toxicity of operational variables and the presence of different chemical species in ultrapure, surface, ground, and wastewaters. Finally, a review is provided of the most recent and relevant published studies on photocatalysis and catalyzed ozonation in water treatments using similar catalysts to those examined in our project.

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Photosubstitution reactions in ruthenium(II) trisdiimine complexes: Implications for photoredox catalysis

Cited by 19 publications

References 173 publications

Halide Photoredox Chemistry

Halide Photoredox Chemistry

Tuning the excited-state deactivation pathways of dinuclear ruthenium(ii) 2,2′-bipyridine complexes through bridging ligand design

Characteristics and Behavior of Different Catalysts Used for Water Decontamination in Photooxidation and Ozonation Processes

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