Limosani F, Kaur R, Cataldo A, Bellucci S, Micciulla F, Zanoni R, Lembo A, Wang B, Pizzoferrato R, Guldi DM, Tagliatesta P (2020)
Publication Type: Journal article
Publication year: 2020
A novel family of nanocarbon-based materials was designed, synthesized, and probed within the context of charge-transfer cascades. We integrated electron-donating ferrocenes with light-harvesting/electron-donating (metallo)porphyrins and electron-accepting graphene nanoplates (GNP) into multicomponent conjugates. To control the rate of charge flow between the individual building blocks, we bridged them via oligo-p-phenyleneethynylenes of variable lengths by β-linkages and the Prato–Maggini reaction. With steady-state absorption, fluorescence, Raman, and XPS measurements we realized the basic physico-chemical characterization of the photo- and redox-active components and the multicomponent conjugates. Going beyond this, we performed transient absorption measurements and corroborated by single wavelength and target analyses that the selective (metallo)porphyrin photoexcitation triggers a cascade of charge transfer events, that is, charge separation, charge shift, and charge recombination, to enable the directed charge flow. The net result is a few nanosecond-lived charge-separated state featuring a GNP-delocalized electron and a one-electron oxidized ferrocenium.
APA:
Limosani, F., Kaur, R., Cataldo, A., Bellucci, S., Micciulla, F., Zanoni, R.,... Tagliatesta, P. (2020). Designing Cascades of Electron Transfer Processes in Multicomponent Graphene Conjugates. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202008820
MLA:
Limosani, Francesca, et al. "Designing Cascades of Electron Transfer Processes in Multicomponent Graphene Conjugates." Angewandte Chemie International Edition (2020).
BibTeX: Download