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The factors affecting electron transfer at semiconductor electrodes sensitised with molecules and in contact with redox electrolytes have been studied for decades. Here, the influence of molecular structural factors enhancing or slowing down electron transfer rates at dye-sensitised electrode interfaces are analysed by Marcus theory. Back electron transfer between TiO2 electrons and oxidised redox mediators are slowed down by reducing electronic coupling using alkyl chains or by minimising attractive intermolecular forces. Electron transfer between surface-bound molecules and the electron dono...

Manipulating the coordination environment of the active center via anion modulation to reveal tailored activity and selectivity has been widely achieved, especially for carbon-based single-atom site catalysts (SACs). However, tuning ligand fields of the active center by single-site metal cation regulation and identifying the effects on the resulting electronic configuration is seldom explored. Herein, we propose a single-site Ru cation coordination strategy to engineer the electronic properties by constructing a Ru/LiCoO2 SAC with atomically dispersed Ru−Co pair sites. Benefitting from the s...

Electron transfer is one of the fundamentally important reactions in physics, chemistry, and biology. Numerous chemical and electrochemical reactions require fast electron transfer between an electron donor and an acceptor to successfully convert energy from one form to another. In particular, interfacial electron transfer dyenamics at a substrate decorated with surface-bound dye molecules and immersed in an electrolyte containing redox molecules have obtained great attention, arising in dye-sensitised solar cells and catalytic systems. At such semiconductor-liquid interfaces, efficient conver...