Related Experiment Video
Updated: Jul 19, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
Dynamics of electron transfer in the oxidation of water by chlorophyll a dimer
1Facultad de Física, Universidad Católica, Casilla 6177, Santiago, Chile.
Abstract:
The observed temperature dependence of the rate constant for reduction of (Chl a.2H2O)2+. by water is fitted to a theoretical expression for the rate of an intramolecular electronic radiationless transition. The theory assumes a single effective mediating mode and the best-fit value for the frequency of this mode is omega(m) = 680 cm(-1), which corresponds to high-frequency, intermolecular librations in water. From an explicit calculation of the nonadiabatic-coupling matrix element, an average electron-transfer distance of 11 A is obtained, consistent with molecular dimensions available for this system.
More Related Videos
12:08Monitoring the Reductive and Oxidative Half-Reactions of a Flavin-Dependent Monooxygenase using Stopped-Flow Spectrophotometry
Published on: March 18, 2012
09:00Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
Published on: April 16, 2018
Related Concept Videos
Electrolysis
The Z-Scheme of Electron Transport in Photosynthesis
Oxygenic Photosynthesis
Electron Transport Chain: Complex III and IV
Oxidation of Phenols to Quinones
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
Photosystem II
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment molecules...