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

Angewandte Chemie International Edition Wiley

Publisher: Wiley-VCH Verlag

Book Volume: 54

Pages Range: 8292-8297

Journal Issue: 28

DOI: 10.1002/anie.201502482

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 (CCC) Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

Università degli Studi di Trieste IT 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://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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