In a recent molecular dynamics study [1] in collaboration with Prof. K. J. Karki (Department of Physics, Guangdong Technion-Israel Institute of Technology in China), we explored how EthylChlorophyllide a behaves when confined between two silica surfaces — a situation relevant for artificial photosynthesis, nanomaterials, and bio-inspired light-harvesting systems. Chlorophylls are among the most important molecules on Earth. They enable plants, algae, and photosynthetic bacteria to convert sunlight into chemical energy. Yet, outside their natural protein environment, chlorophyll molecules are fragile as they can easily lose their central magnesium ion (demetallation), they degrade under light, and they tend to aggregate uncontrollably in solution.

In natural photosynthetic systems, proteins protect and organize chlorophylls. Reproducing this level of control in artificial systems remains a major challenge. One promising strategy is nanoconfinement — trapping chlorophyll derivatives inside well-defined inorganic structures such as silica nanopores.