Efficient utilization of higher-lying excited states to trigger charge-transfer events

Bouit PA, Spänig F, Kuzmanich G, Krokos E, Oelsner C, Garcia-Garibay MA, Delgado JL, Martin N, Guldi DM (2010)

Publication Type: Journal article, Original article

Publication year: 2010

Journal

Chemistry - A European Journal Wiley-VCH Verlag

Original Authors: Bouit P.-A., Spänig F., Kuzmanich G., Krokos E., Oelsner C., Garcia-Garibay M.A., Delgado J.L., Martin N., Guldi D.M.

Publisher: Wiley-VCH Verlag

Book Volume: 16

Pages Range: 9638-9645

Journal Issue: 31

DOI: 10.1002/chem.201001613

Abstract

Several new fullerene-heptamethine conjugates, which absorb as far as into the infrared spectrum as 800 nm, have been synthesized and fully characterized by physicochemical means. In terms of optical and electrochemical characteristics, appreciable electronic coupling between both electroactive species is deduced. The latter also reflect the excited-state features. To this end, time-resolved, transient absorption measurements revealed that photoexcitation is followed by a sequence of charge-transfer events which evolve from higher singlet excited states (i.e., S-fast charge transfer) and the lowest singlet excited state of the heptamethine cyanine (i.e., S - slow charge transfer), as the electron donor, to either a covalently linked C or C as the electron acceptor. Finally, charge transfer from photoexcited C/ C completes the charge-transfer sequence. The slow internal conversion within the light-harvesting heptamethine cyanine and the strong electronic coupling between the individual constituents are particularly beneficial to this process. © 2010 Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim.

Authors with CRIS profile

Christian Oelsner Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

IMDEA-Nanociencia ES Spain (ES) University of California Los Angeles (UCLA) US United States (USA) (US)

How to cite

APA:

Bouit, P.-A., Spänig, F., Kuzmanich, G., Krokos, E., Oelsner, C., Garcia-Garibay, M.A.,... Guldi, D.M. (2010). Efficient utilization of higher-lying excited states to trigger charge-transfer events. Chemistry - A European Journal, 16(31), 9638-9645. https://doi.org/10.1002/chem.201001613

MLA:

Bouit, Pierre-Antoine, et al. "Efficient utilization of higher-lying excited states to trigger charge-transfer events." Chemistry - A European Journal 16.31 (2010): 9638-9645.

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