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Antiparallel three-component gradients in double-channel surface architectures

Publié dansChemical science, vol. 5, no. 12, p. 4610-4614
Date de publication2014
Résumé

The synthesis of multicomponent surface architectures with a thus far inaccessible level of sophistication is accomplished, and the functional relevance of this unprecedented structural complexity is demonstrated. Co-axial channels of oligothiophenes and fullerenes for the transport of holes and electrons, respectively, are equipped with antiparallel-oriented redox gradients with up to three components that drive the charges apart after their generation with light. In the resulting photosystems, charge recombination decreases with each level of sophistication from 29% to 2%, approaching complete suppression. Photocurrents increase correspondingly, and thermal activation barriers decrease. Increasing turn-on voltages for dark current indicates that charges struggle to move backwards up gradients possessing increasing numbers of components. These results demonstrate that the application of the most complex lessons from nature to organic materials is possible and worthwhile, thus supporting curiosity-driven efforts to learn how to synthesize multicomponent architectures of the highest possible sophistication with the highest possible precision.

Citation (format ISO)
HAYASHI, Hironobu et al. Antiparallel three-component gradients in double-channel surface architectures. In: Chemical science, 2014, vol. 5, n° 12, p. 4610–4614. doi: 10.1039/C4SC02092H
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Article (Published version)
accessLevelRestricted
Identifiants
ISSN du journal2041-6520
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Création29.10.2014 17:27:00
Première validation29.10.2014 17:27:00
Heure de mise à jour14.03.2023 22:11:32
Changement de statut14.03.2023 22:11:31
Dernière indexation16.01.2024 12:15:27
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