Institut de Chimie Moléculaire et des Matériaux d'Orsay

Laboratoire de Chimie Inorganique - LCI

Theme 1: Mimicking the Catalytic Unit of Photosystem II

Ally Aukauloo, Marie Sircoglou



 

Understanding how nature uses a Mn4Ca cluster (the Oxygen Evolving Complex in Photosystem II) to perform the four-electron four proton water oxidation on one side and how to duplicate these events in robust synthetic systems on the other are the focus of our group. We are devoting a particular effort in designing molecular based compounds with first row transition elements for the electrochemical activation of water molecules. The main challenge here is the design of ligands that can withstand the harsh oxidising conditions to perform the 4-electron oxidation of water. We are currently developing new strategies to generate high valent manganese-oxo species in order disentangle their electronic properties and with the defining aim to understand the formation of Oxygen-Oxygen bond formation.

Recent publications:
Chemical activation of a mononuclear non-porphyrinic manganese complex using water as oxygen source for the oxygen atom transfer reaction ChemSusChem 2012, 5, 2147–2150.

Implications of remote water molecules on the electron transfer coupled processes at a nonporphyrinic Mn(III)-hydroxido complex.Energy Environ. Sci. 2011, 4 (6), 2041-2044.

Dipyrrinphenol-Mn(III) complex: synthesis, electrochemistry, spectroscopic characterisation and reactivity. Dalton Trans. 2011, 40 (36), 9090-9093.

 

 

 

 

Return to the group's home page