A tripodal coumarin derivative shows complex photoreactivity, changing from intra- to intermolecular photodimerization with increasing concentration. At high concentration, the compound undergoes efficient photopolymerization, resulting in the formation of polymeric submicron-sized particles. The size of these particles can be precisely increased through photoirradiation, without affecting their polydispersity.
J. Avó, J. C. Lima and A. J. Parola, Photochem. Photobiol. Sci., 2019, 18, 993 DOI: 10.1039/C9PP00086K
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