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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

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.

Verlagsausgabe §
DOI: 10.5445/IR/1000086793
Veröffentlicht am 22.10.2018
DOI: 10.1038/s41467-018-06829-3
Zitationen: 33
Web of Science
Zitationen: 31
Zitationen: 33
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Institut für Mikrostrukturtechnik (IMT)
Institut für Nanotechnologie (INT)
Lichttechnisches Institut (LTI)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2018
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000086793
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in Nature Communications
Verlag Nature Research
Band 9
Heft 1
Seiten Art.Nr. 4332
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 18.10.2018
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Nachgewiesen in Dimensions
Web of Science
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