Department of Chemical and Pharmaceutical Sciences, University of Trieste, and INSTM, unit of Trieste, Via Licio Giorgieri 1, 34127, Trieste, Italy.
Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany.
Angew Chem Int Ed Engl. 2020 Jul 27;59(31):12779-12784. doi: 10.1002/anie.202004638. Epub 2020 May 20.
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.
碳点（CDs）及其衍生物是研究电子给体/受体相互作用及其动力学的有用平台。在此，我们将无定形 CDs 与酞菁（Pc）耦合，后者作为电子给体具有大的扩展 π 表面和在可见光谱范围内的强吸收。通过稳态和泵浦探测瞬态吸收光谱研究组分间相互作用，揭示了酞菁对中的对称破缺电荷转移/分离和复合动力学。CDs 促进了酞菁之间的电子相互作用。因此，我们的发现表明 CDs 可用于支持多生色团体系中的电子偶联，并进一步提高其在有机电子学、光子学和人工光合作用中的适用性。
