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Symmetry-Breaking Charge-Transfer Chromophore Interactions Supported by Carbon Nanodots |
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| Authors: | Michele Cacioppo Tobias Scharl Dr Luka ?or?evi? Dr Alejandro Cadranel Dr Francesca Arcudi Prof Dirk M Guldi Prof Maurizio Prato |
| Institution: | 1. Department of Chemical and Pharmaceutical Sciences, University of Trieste, and INSTM, unit of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy;2. Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
These authors contributed equally to this work.;3. Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany |
| 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 |