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Our existence on earth is entirely dependent on photosynthesis, the process which nature uses to convert incident solar radiation into molecular energy. The energy stored as ‘solid sunlight' is regained when photosynthetically created biomass reacts with atmospheric oxygen to form CO2. The combustion powers a myriad of processes, from the biochemical processes that keep us alive, to generating the vast amounts of heat, mechanical and electrical energy that has allowed modern societies to flourish. The price of our success has been a rapidly increasing human population and a dramatically increasing atmospheric concentration of CO2, leading to global warming. We are studying fundamental processes in both natural and artificial photosynthesis with the goal of utilizing solar energy as a source of storable energy to replace coal and oil.
Elmars Krausz received his BSc (hons) and PhD from the University of Sydney in Physical Chemistry.
Technical |
Utilising the phenomenal capacity of our new CCD spectrograph, we have been able to study weak transient absorptions in the 700-900 nm region that have been attributed to the manganese cluster of the oxygen evolving centre in Photosystem II.
We have developed a potent spectrometer system, able to accumulate extremely accurate spectra, over a wide spectral range, in less than 100msec whilst using a minimum amount of measurement light.
When Photosystem II spontaneously charge-separates, the critical pheophytin pigment is transiently reduced before metastable reduction of a plastoquinnone.
More about Primary Acceptor and Secondary Donors in Photosystem II
WSCP proteins, which bind a small number of pigments, form a wonderful system in which to study protein-pigment and pigment-pigment interactions.
More about Water-Soluble Chlorophyll-Binding Proteins (WSPC)