Carbon Nanodots: Supramolecular Electron Donor-Acceptor Hybrids Featuring Perylenediimides
Strauß V, Margraf J, Dirian K, Syrgiannis Z, Prato M, Wessendorf C, Hirsch A, Clark T, Guldi DM (2015)
Publication Status: Published
Publication Type: Journal article
Publication year: 2015
Journal
Publisher: Wiley-VCH Verlag
Book Volume: 54
Pages Range: 8292-8297
Journal Issue: 28
Abstract
We describe the formation of charge-transfer complexes that feature electron-donating carbon nanodots (CND) and electron-accepting perylenediimides (PDI). The functionalities of PDIs have been selected to complement those of CNDs in terms of electrostatic and -stacking interactions based on oppositely charged ionic head groups and extended -systems, respectively. Importantly, the contributions from electrostatic interactions were confirmed in reference experiments, in which stronger interactions were found for PDIs that feature positively rather than negatively charged head groups. The electronic interactions between the components in the ground and excited state were characterized in complementary absorption and fluorescence titration assays that suggest charge-transfer interactions in both states with binding constants on the order of 8x10(4)M(-1) (25Lg(-1)). Selective excitation of the two components in ultrafast pump probe experiments gave a 210ps lived charge-separated state.
Authors with CRIS profile
Volker Strauß
Lehrstuhl für Physikalische Chemie I
Johannes Margraf
Lehrstuhl für Theoretische Chemie
Konstantin Dirian
Lehrstuhl für Physikalische Chemie I
Andreas Hirsch
Lehrstuhl für Organische Chemie II
Timothy Clark
Computer-Chemie-Centrum
Dirk Michael Guldi
Lehrstuhl für Physikalische Chemie I
Additional Organisation(s)
Involved external institutions
Italy (IT)How to cite
APA:
Strauß, V., Margraf, J., Dirian, K., Syrgiannis, Z., Prato, M., Wessendorf, C.,... Guldi, D.M. (2015). Carbon Nanodots: Supramolecular Electron Donor-Acceptor Hybrids Featuring Perylenediimides. Angewandte Chemie International Edition, 54(28), 8292-8297. https://dx.doi.org/10.1002/anie.201502482
MLA:
Strauß, Volker, et al. "Carbon Nanodots: Supramolecular Electron Donor-Acceptor Hybrids Featuring Perylenediimides." Angewandte Chemie International Edition 54.28 (2015): 8292-8297.
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