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Photosystem II is the chloroplast membrane protein complex that catalyzes the light-induced oxidation of water to dioxygen in the first step of photosynthetic electron transport. We use spectroscopic, biophysical, and molecular biological methods to probe the structure and function of the redox centers, the kinetics and yields of electron-transfer reactions, and the chemistry of water oxidation in photosystem II. Our goal is to define how Nature has solved the difficult problem of efficient light-driven, four-electron oxidation of water to dioxygen. The studies on photosystem II provide insight into the design of artificial systems that split water. In conjunction with our biophysical studies of the natural photosynthetic system, we are also investigating inorganic models of the tetramanganese active site in photosystem II. The synergism between the inorganic and biological chemistry is an important aspect of this research and yielded the first inorganic manganese water-oxidation catalyst. We are also working to develop artificial processes that use solar energy for fuel production. Our aim is to use a bioinspired approach for solar fuel production based on our water-oxidation catalysts attached to nanostructured TiO2.
Specialized Terms: photosystem II; EPR spectroscopy; metalloproteins; artificial photosynthesis
Photosystem II is the chloroplast membrane protein complex that catalyzes the light-induced oxidation of water to dioxygen in the first step of photosynthetic electron transport. We use spectroscopic, biophysical, and molecular biological methods to probe the structure and function of the redox centers, the kinetics and yields of electron-transfer reactions, and the chemistry of water oxidation in photosystem II. Our goal is to define how Nature has solved the difficult problem of efficient light-driven, four-electron oxidation of water to dioxygen. The studies on photosystem II provide insight into the design of artificial systems that split water. In conjunction with our biophysical studies of the natural photosynthetic system, we are also investigating inorganic models of the tetramanganese active site in photosystem II. The synergism between the inorganic and biological chemistry is an important aspect of this research and yielded the first inorganic manganese water-oxidation catalyst. We are also working to develop artificial processes that use solar energy for fuel production. Our aim is to use a bioinspired approach for solar fuel production based on our water-oxidation catalysts attached to nanostructured TiO2.
Specialized Terms: photosystem II; EPR spectroscopy; metalloproteins; artificial photosynthesis
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Josephine A. Jayworth,Cristina Decavoli,Matt D. Capobianco,Jan Paul Menzel, Spencer R. Adler, Conrad A. Kocoj,Jessica G. Freeze, Robert H. Crabtree,Peijun Guo,Victor S. Batista,Gary W. Brudvig
ACS APPLIED MATERIALS & INTERFACESno. 12 (2024): 14841-14851
Angewandte Chemie (International ed. in English)no. 50 (2023): e202309505-e202309505
The journal of physical chemistry lettersno. 26 (2023): 5960-5965
Josephine A. Jayworth,Matt D. Capobianco,Han-Yu Liu,Cristina Decavoli,Robert H. Crabtree,Gary W. Brudvig
Meeting abstractsno. 15 (2023): 1410-1410
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Journal of Physical Chemistry Cno. 20 (2022): 8596-8604
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