Artificial photosynthesis that mimics natural photosynthesis is based on oxidation of water molecules and reduction of small molecules by photocatalytic reaction. Absorption of light initiates a series of energy and electron transfer that leads to four electrons and four protons oxidation of water. These electrons are being used to reduce CO2 to hydrocarbons or protons to H2. The solar energy is then stored in O2 and H2 as fuel or in the form of chemical bonding of hydrocarbons molecules. 

Using different time-resolved spectroscopy techniques, we aim to get insight on fundamental photophysics and photochemistry of molecular systems used in artificial photosynthesis. Our studies focused  on photoinduced processes such as photoinduced electron transfer, proton-coupled electron transfer, charge accumulation or energy transfer. Wide range of techniques are being used to probe these different processes, including various multiscale optical time-resolved spectroscopic techniques with a time resolution going from few femtosecond to milliseconds as well as time-resoved X-ray spectroscopy.