Synthesis, characterization, and photoinduced energy and electron transfer in a supramolecular tetrakis (ruthenium(II) phthalocyanine) perylenediimide pentad
Jimenez AJ, Grimm B, Gunderson VL, Vagnini MT, Krick Calderon S, Salome Rodriguez-Morgade M, Wasielewski MR, Guldi DM, Torres T (2011)
Publication Type: Journal article, Original article
Publication year: 2011
Journal
Original Authors: Jimenez A.J., Grimm B., Gunderson V.L., Vagnini M.T., Krick Calderon S., Rodriguez-Morgade M.S., Wasielewski M.R., Guldi D.M., Torres T.
Publisher: Wiley-VCH Verlag
Book Volume: 17
Pages Range: 5024-5032
Journal Issue: 18
Abstract
Metal coordination was probed as a versatile approach for designing a novel electron donor/acceptor hybrid [PDIpy {Ru(CO)Pc} ] (1), in which four pyridines placed at the bay region of a perylenediimides (PDIpy ) coordinate with four ruthenium phthalocyanine units [Ru(CO)Pc]. This structural motif was expected to promote strong electronic coupling between the electron donors and the electron acceptor, a hypothesis that was confirmed in a full-fledged physicochemical investigation focusing on the ground and excited state reactivities. As far as the ground state is concerned, absorption and electrochemical assays indeed reveal a notable redistribution of electron density, that is, from the electron-donating [Ru(CO)Pc] to the electron-accepting PDIpy . The most important thing to note in this context is that both the [Ru(CO)Pc] oxidation and the PDIpy reduction are rendered more difficult in 1 than in the individual building blocks. Likewise, in the excited state, strong electronic communication is the inception for a rapid charge-transfer process in photoexcited 1. Regardless of exciting [Ru(CO)Pc] or PDIpy , spectral characteristics of the [RuPc] radical cation (broad absorptive features from 425 to 600 nm with a maximum at 575 nm, as well as a band centered at 725 nm) and of the PDI radical anion (780 nm maximum) emerge. The correspondingly formed radical ion pair state lasts for up to several hundred picoseconds in toluene, for example. On the other hand, employing more polar solvents, such as dichloromethane, destabilizes the radical ion pair state. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Authors with CRIS profile
Bruno Grimm
Graduiertenzentrum der FAU
Sandra Krick Calderon
Lehrstuhl für Physikalische Chemie II
Dirk Michael Guldi
Lehrstuhl für Physikalische Chemie I
Involved external institutions
United States (USA) (US)
Spain (ES)How to cite
APA:
Jimenez, A.J., Grimm, B., Gunderson, V.L., Vagnini, M.T., Krick Calderon, S., Salome Rodriguez-Morgade, M.,... Torres, T. (2011). Synthesis, characterization, and photoinduced energy and electron transfer in a supramolecular tetrakis (ruthenium(II) phthalocyanine) perylenediimide pentad. Chemistry - A European Journal, 17(18), 5024-5032. https://doi.org/10.1002/chem.201002963
MLA:
Jimenez, Angel J., et al. "Synthesis, characterization, and photoinduced energy and electron transfer in a supramolecular tetrakis (ruthenium(II) phthalocyanine) perylenediimide pentad." Chemistry - A European Journal 17.18 (2011): 5024-5032.
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