Photoredox Reactions of Mixed-Valence Compounds Induced by Intervalence Excitation

Vogler, Arnd; Osman, Ahmed H.; Kunkely, Horst

doi:10.1016/0010-8545(85)80048-5

Cited by 98 publications

(31 citation statements)

References 41 publications

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“…In order to check our approach further we have obtained the redox potential for the couple Co(NH 3 ) 6 3ϩ/2ϩ using the data for the MMCT band within the ion pair Co(NH 3 ) 6 3ϩ ؒRu(CN) 6 4Ϫ . 23 By the previous procedure a value of E Њ = 0.19 V is obtained in a reasonable agreement with the published value for this redox potential E Њ Co(NH 3 ) 6 3ϩ/2ϩ = 0.11 V. 24 Notice that, according to this result, the error in our procedure is of the same order as those of Savéant's method. 2a In conclusion, the possibility of using an optical method to determine redox potentials of chemically or electrochemically irreversible systems has been shown.…”

Section: E Opsupporting

confidence: 85%

Procedure for the determination of redox potentials of chemically (and electrochemically) irreversible inorganic redox couples from spectroscopic data

Sánchez¹,

Pérez‐Tejeda²,

Pérez³

et al. 1999

J. Chem. Soc., Dalton Trans.

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Section: E Opsupporting

confidence: 85%

Procedure for the determination of redox potentials of chemically (and electrochemically) irreversible inorganic redox couples from spectroscopic data

Sánchez¹,

Pérez‐Tejeda²,

Pérez³

et al. 1999

J. Chem. Soc., Dalton Trans.

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“…47–49 In these complexes, reactivity is confined to single electron oxidations and reductions of the constituent M n and M n+1 centers, respectively. 50–55 Extrapolating from this one-electron formalism, two-electron mixed valency of bimetallic cores provides entry into a multi electron oxidation-reduction chemistry (Scheme 2). 56 Redox cooperativity may be established between the individual metal centers of a M n ⋯M n+2 mixed-valence core such that two-electron oxidations may be promoted at a M n+2 center and two-electron reductions may be promoted at a M n center.…”

Section: A Chemist’s Toolbox For Catalysis Of Consequence To Renewmentioning

confidence: 99%

Chemistry of Personalized Solar Energy

2009

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Personalized energy (PE) is a transformative idea that provides a new modality for the planet’s energy future. By providing solar energy to the individual, an energy supply becomes secure and available to people of both legacy and non-legacy worlds, and minimally contributes to increasing the anthropogenic level of carbon dioxide. Because PE will be possible only if solar energy is available 24 hours a day, 7 day a week, the key enabler for solar PE is an inexpensive storage mechanism. HX (X = halide or OH−) splitting is a fuel-forming reaction of sufficient energy density for large scale solar storage but the reaction relies on chemical transformations that are not understood at the most basic science level. Critical among these are multielectron transfers that are proton-coupled and involve the activation of bonds in energy poor substrates. The chemistry of these three italicized areas is developed, and from this platform, discovery paths leading to new HX and H2O splitting catalysts are delineated. For the case of the water splitting catalyst, it captures many of the functional elements of photosynthesis. In doing so, a highly manufacturable and inexpensive method has been discovered for solar PE storage.

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“…Während es eine Vielzahl an Übersicht-artikeln über anorganische MV-Verbindungen gibt, [21,27,61,62] wurden organische MV-Verbindungen bisher nicht über-sichtsartig behandelt. [326] Wir wollen keinen allumfassenden Überblick über organische MV-Verbindungen geben, sondern uns vielmehr auf einige Familien eher prominenterer Vertreter konzentrieren, die es uns erlauben, StrukturEigenschafts-Beziehungen in systematischer Weise abzuleiten.…”

Section: Gemischtvalente Verbindungenunclassified

Organische gemischtvalente Verbindungen: ein Spielplatz für Elektronen und Löcher

2011

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Gemischtvalente (MV) Verbindungen sind ausgezeichnete Modellsysteme, um grundlegende Elektronentransport(ET)‐ und Ladungstransfer(CT)‐Phänomene zu untersuchen. Diese sind in komplexen biophysikalischen Prozessen wie der Photosynthese, aber auch in artifiziellen elektronischen Bauteilen von großer Bedeutung. So sind organische MV‐Verbindungen effiziente Lochtransportmaterialien in organischen lichtemittierenden Dioden (OLEDs), Solarzellen und photochromen Fenstern. Die Bedeutung der organischen gemischtvalenten Chemie sollte jedoch weniger in ihrer direkten Anwendbarkeit gesehen werden, als vielmehr in dem riesigen Kenntnisschatz über Elektronentransferphänomene, der durch ihr Studium gewonnen wurde. Die große Vielfalt an organischen Redoxzentren und Brückeneinheiten, die zu MV‐Verbindungen kombiniert werden können, sowie die stete Weiterentwicklung von ET‐Theorien und ET‐Untersuchungsmethoden förderten das enorme Interesse an organischen MV‐Verbindungen in den letzten Jahrzehnten und zeigen das große Potential dieser Verbindungsklasse auf. Das Ziel dieses Aufsatzes ist es, das letzte Jahrzehnt der organischen gemischtvalenten Chemie zusammenzufassen und ihren Einfluss auf moderne funktionelle Materialien hervorzuheben.

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Photoredox Reactions of Mixed-Valence Compounds Induced by Intervalence Excitation

Abstract: ABSTRACT

Cited by 98 publications

References 41 publications

Procedure for the determination of redox potentials of chemically (and electrochemically) irreversible inorganic redox couples from spectroscopic data

Procedure for the determination of redox potentials of chemically (and electrochemically) irreversible inorganic redox couples from spectroscopic data

Chemistry of Personalized Solar Energy

Organische gemischtvalente Verbindungen: ein Spielplatz für Elektronen und Löcher

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