Journal ArticleDOI
Intramolecular Long-Distance Electron Transfer in Organic Molecules
Gerhard L. Closs,John R. Miller +1 more
TLDR
Theoretical predictions of an "inverted region," where increasing the driving force of the reaction will decrease its rate, have begun to be experimentally confirmed and a predicted nonlinear dependence of ET rates on the polarity of the solvent has also been confirmed.Abstract:
Intramolecular long-distance electron transfer (EI) has been actively studied in recent years in order to test existing theories in a quantitative way and to provide the necessary constants for predicting ET rates from simple structural parameters. Theoretical predictions of an "inverted region," where increasing the driving force of the reaction will decrease its rate, have begun to be experimentally confirmed. A predicted nonlinear dependence of ET rates on the polarity of the solvent has also been confirmed. This work has implications for the design of efficient photochemical charge-separation devices. Other studies have been directed toward determining the distance dependence of ET reactions. Model studies on different series of compounds give similar distance dependences. When different stereochemical structures are compared, it becomes apparent that geometrical factors must be taken into account. Finally, the mechanism of coupling between donor and acceptor in weakly interacting systems has become of major importance. The theoretical and experimental evidence favors a model in which coupling is provided by the interaction with the orbitals of the intervening molecular fragments, although more experimental evidence is needed.read more
Citations
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Journal ArticleDOI
Signaling Recognition Events with Fluorescent Sensors and Switches.
A. Prasanna de Silva,H. Q. Nimal Gunaratne,Thorfinnur Gunnlaugsson,Allen J. M. Huxley,Colin P. McCoy,Jude T. Rademacher,Terence E. Rice +6 more
Journal ArticleDOI
Proton-Coupled Electron Transfer
David R. Weinberg,Christopher J. Gagliardi,Jonathan F. Hull,Christine Fecenko Murphy,Caleb A. Kent,Brittany C. Westlake,Amit Paul,Daniel H. Ess,Dewey G. McCafferty,Thomas J. Meyer +9 more
TL;DR: Proton-coupled electron transfer is an important mechanism for charge transfer in a wide variety of systems including biology- and materials-oriented venues and several are reviewed.
Journal ArticleDOI
Nature of biological electron transfer
TL;DR: Powerful first-order analysis of intraprotein electron transfer is developed from electron-transfer measurements both in biological and in chemical systems, finding selection of distance, free energy and reorganization energy are sufficient to define rate and directional specificity of biological electron transfer.
Journal ArticleDOI
Contemporary Issues in Electron Transfer Research
TL;DR: In this paper, a qualitative discussion of electron transfer, its time and distance scales, energy curves, and basic parabolic energy models are introduced to define the electron transfer process, and some of the important, challenging, and problematic issues in contemporary electron transfer research are discussed.
Journal ArticleDOI
Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO2 semiconductor surfaces
Shane Ardo,Gerald J. Meyer +1 more
TL;DR: A critical review of light-driven interfacial charge-transfer reactions of transition-metal compounds anchored to mesoporous, nanocrystalline TiO2 (anatase) thin films is described.
References
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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
On the Theory of Oxidation‐Reduction Reactions Involving Electron Transfer. I
TL;DR: In this paper, a mechanism for electron transfer reactions is described, in which there is very little spatial overlap of the electronic orbitals of the two reacting molecules in the activated complex, and a quantitative theory of the rates of oxidation reduction reactions involving electron transfer in solution is presented.
Journal ArticleDOI
Chemical and Electrochemical Electron-Transfer Theory
TL;DR: In this article, a review of electron transfer reactions is presented, focusing on the absence of bond rupture in the reaction step, which is a unique feature of purely electron-transfer reactions.
Journal ArticleDOI
Kinetics of Fluorescence Quenching by Electron and H‐Atom Transfer
Dieter Rehm,Albert Weller +1 more
TL;DR: In this article, the rate constants of 60 typical electron donor-acceptor systems have been measured in de-oxygenated acetonitrile and are shown to be correlated with the free enthalpy change, ΔG23, involved in the actual electron transfer process.
Journal ArticleDOI
Structure of the protein subunits in the photosynthetic reaction centre of Rhodopseudomonas viridis at 3Å resolution
TL;DR: The molecular structure of the photosynthetic reaction centre from Rhodopseudomonas viridis has been elucidated using X-ray crystallographic analysis and the first description of the high-resolution structure of an integral membrane protein is presented.