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Anisotropic energy transfer in crystalline chromophore assemblies

Haldar, Ritesh; Jakoby, Marius; Mazel, Antoine; Zhang, Qiang; Welle, Alexander; Mohamed, Tawheed; Krolla, Peter; Wenzel, Wolfgang; Diring, Stéphane; Odobel, Fabrice; Richards, Bryce S.; Howard, Ian A.; Wöll, Christof

Abstract:
An ideal material for photon harvesting must allow control of the exciton diffusion length and directionality. This is necessary in order to guide excitons to a reaction center, where their energy can drive a desired process. To reach this goal both of the following are required; short- and long-range structural order in the material and a detailed understanding of the excitonic transport. Here we present a strategy to realize crystalline chromophore assemblies with bespoke architecture. We demonstrate this approach by assembling anthracene dibenzoic acid chromophore into a highly anisotropic, crystalline structure using a layer-by-layer process. We observe two different types of photoexcited states; one monomer-related, the other excimer-related. By incorporating energy-accepting chromophores in this crystalline assembly at different positions, we demonstrate the highly anisotropic motion of the excimer-related state along the [010] direction of the chromophore assembly. In contrast, this anisotropic effect is inefficient for the monomer-related excited state.

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Verlagsausgabe §
DOI: 10.5445/IR/1000086793
Veröffentlicht am 22.10.2018
Originalveröffentlichung
DOI: 10.1038/s41467-018-06829-3
Scopus
Zitationen: 6
Web of Science
Zitationen: 3
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Institut für Funktionelle Grenzflächen (IFG)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2041-1723
urn:nbn:de:swb:90-867938
KITopen-ID: 1000086793
HGF-Programm 43.22.01 (POF III, LK 01)
Erschienen in Nature Communications
Band 9
Heft 1
Seiten Article: 4332
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 18.10.2018
Schlagworte ih ToF-SIMS
Nachgewiesen in Scopus
Web of Science
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