Journal ArticleDOI
Energy gap dependence for intersystem crossing within charge transfer triplet exciplexes
Reads0
Chats0
TLDR
In this article, the decay kinetics of triplet exciplexes (TE) with complete charge transfer (contact radical ion pair type) formed by electron transfer from aromatic amines to the triplet excited states of quinones in benzene, chloroform and 1,1,2,2-tetrachloroethane was studied by laser photolysis.About:
This article is published in Chemical Physics.The article was published on 1989-10-15. It has received 28 citations till now. The article focuses on the topics: Intersystem crossing & Electron transfer.read more
Citations
More filters
Journal ArticleDOI
Rates of heme oxidation and reduction in ru(his33)cytochrome c at very high driving forces
Gary A. Mines,Morten J. Bjerrum,Michael G. Hill,Danilo R. Casimiro,I-Jy Chang,Jay R. Winkler,Harry B. Gray +6 more
TL;DR: In this article, the driving force dependence of Fe2+ → Ru3+ ET in RuL2(im)(His33)cyt c was measured over a driving-force range of 0.59 to 1.89 eV.
Journal ArticleDOI
Direct Observation and Structural Characterization of the Encounter Complex in Bimolecular Electron Transfers with Photoactivated Acceptors
TL;DR: In this paper, the 1:1 encounter complex between photoexcited quinones and various aromatic donors (ArH) is observed directly by time-resolved ps spectroscopy immediately before it undergoes electron transfer to the ion-radical pair [Q•-, ArH•+].
Journal ArticleDOI
Electron-Transfer Mechanisms with Photoactivated Quinones. The Encounter Complex versus the Rehm−Weller Paradigm
TL;DR: In this article, the second-order rate constants (k2) exhibit Rehm−Weller (outer-sphere) dependence on the free energy (ΔGET), despite the new findings that the quenching occurs via a series of rather strong encounter complexes [Q*, ArH] with substantial charge-transfer bonding.
Journal ArticleDOI
Magnetic field, additive and structural effects on the decay kinetics of micellized triplet radical pairs. Role of diffusion, spin-orbit coupling and paramagnetic relaxation
TL;DR: In this article, the authors examined the geminate recombination kinetics of the radical pairs produced by quenching of the triplet aromatic ketones or quinones by 4-phenylphenol and 4phenylaniline in aqueous micellar solutions of sodium alkyl sulfates in the presence of additives.
Journal ArticleDOI
Photoinduced Back Electron Transfer within Geminate Radical Ion Pairs. Observation of the Marcus Inverted Region in the System Thionine with Several Aromatic Donors
Günter Grampp,Gabriel Hetz +1 more
TL;DR: In this paper, the Inverted Region was found for back electron transfer reactions within geminate radical pairs consisting of triplet-thionine and several aromatic donors, and the standard free energy change ΔG−et0 ranges from -54.0 to -150.5 kJ/mol.
References
More filters
Journal ArticleDOI
Electron transfers in chemistry and biology
Rudolph A. Marcus,Norman Sutin +1 more
TL;DR: In this paper, the electron transfer reactions between ions and molecules in solution have been the subject of considerable experimental study during the past three decades, including charge transfer, photoelectric emission spectra, chemiluminescent electron transfer, and electron transfer through frozen media.
Journal ArticleDOI
Spin—Orbit Coupling and the Radiationless Processes in Nitrogen Heterocyclics
TL;DR: In this paper, the matrix elements of the spin-orbit operator between the zero-order (spin-free) (n, π*) states of nitrogen heterocyclics are examined.
Journal ArticleDOI
Intramolecular long-distance electron transfer in radical anions. The effects of free energy and solvent on the reaction rates
TL;DR: In this paper, a homologous series of eight compounds of the general structure A-Sp-B where B is 4-biphenylyl, Sp is a rigid saturated hydrocarbon spacer, the steroidal 5-cap alpha-androstane skeleton, and A is one of a series of 8 different molecular groups with π.. electron networks was synthesized.
Journal ArticleDOI
Exchange reactions and electron transfer reactions including isotopic exchange. Theory of oxidation-reduction reactions involving electron transfer. Part 4.—A statistical-mechanical basis for treating contributions from solvent, ligands, and inert salt
TL;DR: In this article, the mechanism for electron transfer is discussed in terms of an atomic motion on a potential energy surface in many-dimensional atomic configuration space, where a surface for the reactants intersects one for the products.
Journal ArticleDOI
The effect of intramolecular quantum modes on free energy relationships for electron transfer reactions
Jens Ulstrup,Joshua Jortner +1 more
TL;DR: In this article, a general quantum description of exothermic electron transfer reactions is formulated by treating such reactions as the nonradiative decay of a "supermolecule" consisting of the electron donor, the electron acceptor, and the polar solvent.
Related Papers (5)
Magnetic field effects in chemical kinetics and related phenomena
Ulrich Steiner,Thomas Ulrich +1 more