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Symmetry‐Breaking Charge‐Transfer Chromophore Interactions Supported by Carbon Nanodots
Author(s) -
Cacioppo Michele,
Scharl Tobias,
Đorđević Luka,
Cadranel Alejandro,
Arcudi Francesca,
Guldi Dirk M.,
Prato Maurizio
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202004638
Subject(s) - chromophore , chemical physics , electron transfer , absorption (acoustics) , absorption spectroscopy , photochemistry , acceptor , ultrafast laser spectroscopy , materials science , electronic structure , spectroscopy , chemistry , computational chemistry , physics , optics , condensed matter physics , quantum mechanics , composite material
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.