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Symmetry‐Breaking Charge‐Transfer Chromophore Interactions Supported by Carbon Nanodots
Authors:Michele Cacioppo,Tobias Scharl,Luka &#x  or&#x  evi&#x  ,Alejandro Cadranel,Francesca Arcudi,Dirk M. Guldi,Maurizio Prato
Affiliation:Michele Cacioppo,Tobias Scharl,Luka Đorđević,Alejandro Cadranel,Francesca Arcudi,Dirk M. Guldi,Maurizio Prato
Abstract:Carbon dots (CDs) and their derivatives are useful platforms for studying electron‐donor/acceptor interactions and dynamics therein. Herein, we couple amorphous CDs with phthalocyanines (Pcs) that act as electron donors with a large extended π‐surface and intense absorption across the visible range of the solar spectrum. Investigations of the intercomponent interactions by means of steady‐state and pump‐probe transient absorption spectroscopy reveal symmetry‐breaking charge transfer/separation and recombination dynamics within pairs of phthalocyanines. The CDs facilitate the electronic interactions between the phthalocyanines. Thus, our findings suggest that CDs could be used to support electronic couplings in multichromophoric systems and further increase their applicability in organic electronics, photonics, and artificial photosynthesis.
Keywords:carbon dots  charge transfer  chromophores  phthalocyanines  symmetry breaking
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