Designing Cascades of Electron Transfer Processes in Multicomponent Graphene Conjugates
Abstract: 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.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Designing Cascades of Electron Transfer Processes in Multicomponent Graphene Conjugates ; volume:59 ; number:52 ; year:2020 ; pages:23706-23715 ; extent:10
Angewandte Chemie / International edition. International edition ; 59, Heft 52 (2020), 23706-23715 (gesamt 10)
- Urheber
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Limosani, Francesca
Kaur, Ramandeep
Cataldo, Antonino
Bellucci, Stefano
Micciulla, Federico
Zanoni, Robertino
Lembo, Angelo
Wang, Bingzhe
Pizzoferrato, Roberto
Guldi, Dirk M.
Tagliatesta, Pietro
- DOI
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10.1002/anie.202008820
- URN
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urn:nbn:de:101:1-2022052511023707551409
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:34 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Limosani, Francesca
- Kaur, Ramandeep
- Cataldo, Antonino
- Bellucci, Stefano
- Micciulla, Federico
- Zanoni, Robertino
- Lembo, Angelo
- Wang, Bingzhe
- Pizzoferrato, Roberto
- Guldi, Dirk M.
- Tagliatesta, Pietro
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