Hierarchical organization of perylene bisimides and polyoxometalates for photo-assisted water oxidation

Bonchio M, Syrgiannis Z, Burian M, Marino N, Pizzolato E, Dirian K, Rigodanza F, Volpato GA, La Ganga G, Demitri N, Berardi S, Amenitsch H, Guldi DM, Caramori S, Bignozzi CA, Sartorel A, Prato M (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Nature Chemistry Nature Publishing Group

Book Volume: 11

Pages Range: 146-153

Journal Issue: 2

DOI: 10.1038/s41557-018-0172-y

Abstract

The oxygen in Earth’s atmosphere is there primarily because of water oxidation performed by photosynthetic organisms using solar light and one specialized protein complex, photosystem II (PSII). High-resolution imaging of the PSII ‘core’ complex shows the ideal co-localization of multi-chromophore light-harvesting antennas with the functional reaction centre. Man-made systems are still far from replicating the complexity of PSII, as the majority of PSII mimetics have been limited to photocatalytic dyads based on a 1:1 ratio of a light absorber, generally a Ru–polypyridine complex, with a water oxidation catalyst. Here we report the self-assembly of multi-perylene-bisimide chromophores (PBI) shaped to function by interaction with a polyoxometalate water-oxidation catalyst (Ru4POM). The resulting [PBI]5Ru4POM complex shows a robust amphiphilic structure and dynamic aggregation into large two-dimensional paracrystalline domains, a redshifted light-harvesting efficiency of >40% and favourable exciton accumulation, with a peak quantum efficiency using ‘green’ photons (λ > 500 nm). The modularity of the building blocks and the simplicity of the non-covalent chemistry offer opportunities for innovation in artificial photosynthesis.

Authors with CRIS profile

Konstantin Dirian Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

University of Padua / Universita degli Studi di Padova IT Italy (IT) Technische Universität Graz AT Austria (AT) Università degli Studi di Trieste IT Italy (IT) University of Messina / Università degli Studi di Messina IT Italy (IT) Elettra Sincrotrone Trieste S.C.p.A. IT Italy (IT) Università degli Studi di Ferrara IT Italy (IT)

How to cite

APA:

Bonchio, M., Syrgiannis, Z., Burian, M., Marino, N., Pizzolato, E., Dirian, K.,... Prato, M. (2019). Hierarchical organization of perylene bisimides and polyoxometalates for photo-assisted water oxidation. Nature Chemistry, 11(2), 146-153. https://doi.org/10.1038/s41557-018-0172-y

MLA:

Bonchio, Marcella, et al. "Hierarchical organization of perylene bisimides and polyoxometalates for photo-assisted water oxidation." Nature Chemistry 11.2 (2019): 146-153.

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