Browsing by Subject "Electron transfer"

Conference Object

Coherence in electron transfer pathways

Skourtis, Spiros S.; Beratan, David N.; Waldeck, D. H. (2011)

Central to the view of electron-transfer reactions is the idea that nuclear motion generates a transition state geometry at which the electron/hole amplitude propagates coherently from the electron donor to the electron ...

Article

Electron transfer through fluctuating bridges: On the validity of the superexchange mechanism and time-dependent tunneling matrix elements

Skourtis, Spiros S.; Archontis, Georgios Z.; Xie, Q. (2001)

An attempt is made to find the most general description of the superexchange mechanism that is valid for time-dependent donor-bridge-acceptor systems. Time-dependent electron-transfer probabilities that involve single MD ...

Article

Floquet analysis for vibronically modulated electron tunneling

Carias, H.; Beratan, David N.; Skourtis, Spiros S. (2011)

Electron tunneling provides the primary reaction channel for electron transfer (ET) in many molecular systems. The analysis of such systems therefore requires the consideration of electronic coherence and interference ...

Article

Fluctuations in biological and bioinspired electron-transfer reactions

Skourtis, Spiros S.; Waldeck, D. H.; Beratan, David N. (2010)

Central to theories of electron transfer (ET) is the idea that nuclear motion generates a transition state that enables electron flow to proceed, but nuclear motion also induces fluctuations in the donor-acceptor (DA) ...

Article

The protein effect in the structure of two ferryl-oxo intermediates at the same oxidation level in the heme copper binuclear center of cytochrome c oxidase

Pinakoulaki, Eftychia; Daskalakis, Vangelis; Ohta, T.; Richter, O. -M H.; Budiman, K.; Kitagawa, T.; Ludwig, B.; Varotsis, Constantinos (2013)

Identification of the intermediates and determination of their structures in the reduction of dioxygen to water by cytochrome c oxidase (CcO) are particularly important to understanding both O2 activation and proton pumping ...

Article

Size-dependent charge transfer in blends of Pbs quantum dots with a low-gap silicon-bridged copolymer

Itskos, Grigorios; Papagiorgis, Panagiotis; Tsokkou, Demetra; Othonos, Andreas S.; Hermerschmidt, F.; Economopoulos, Solon P.; Yarema, M.; Heiss, W.; Choulis, Stelios A. (2013)

The photophysics of bulk heterojunctions of a high-performance, low-gap silicon-bridged dithiophene polymer with oleic acid capped PbS quantum dots (QDs) are studied to assess the material potential for light harvesting ...

Article

Steady-state theory of current transfer

Ben-Moshe, V.; Nitzan, A.; Skourtis, Spiros S.; Beratan, David N. (2010)

Current transfer is defined as a charge-transfer process where the transferred charge carries information about its original motion. We have recently suggested that such transfer causes the asymmetry observed in electron ...

Article

Turning charge transfer on and off in a molecular interferometer with vibronic pathways

Xiao, D.; Skourtis, Spiros S.; Rubtsov, I. V.; Beratan, David N. (2009)

Inelastic electron-transfer kinetics in molecules with electron donor and acceptor units connected by a bridge is expected to be sensitive to bridge-localized vibronic interactions. Here, we show how inelastic electron ...

Article

Vanadium(iv/v)-p-dioxolene temperature induced electron transfer associated with ligation/deligation of solvent molecules

Drouza, Chryssoula; Vlasiou, Manolis; Keramidas, Anastasios D. (2013)

Reaction of an aqueous solution of NaVO3 or a methanol solution of [VO(acac)2] with 2,5-bis((bis(2-hydroxyethyl)amino)methyl) hydroquinone, H6bdeah, results in the formation of two major vanadium species characterized by ...