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Symmetry-Breaking Charge-Transfer Chromophore Interactions Supported by Carbon Nanodots.

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 ?-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.

SUBMITTER: Cacioppo M

PROVIDER: S-EPMC7496469 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Symmetry-Breaking Charge-Transfer Chromophore Interactions Supported by Carbon Nanodots.

Cacioppo Michele M Scharl Tobias T Đorđević Luka L Cadranel Alejandro A Arcudi Francesca F Guldi Dirk M DM Prato Maurizio M

Angewandte Chemie (International ed. in English) 20200520 31

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 a ...[more]

PMID: 32282973

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