https://www.selleckchem.com/
Eumelanin is responsible for photoprotection in living organisms. It is made of 5,6-dihydroxyindole (DHI) oligomers. However, lack of detailed structural knowledge limits understanding its function and exploiting its potential in material science. To uncover the relationship between structural stability and optical properties, we have studied a virtual library of 830 DHI dimers. We find a preference for oxidized, polycyclic structures which speaks in favor of graphite-like structures for the larger oligomers, and propose an electrocyclic formation mechanism
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