Anisotropic energy transfer in crystalline chromophore assemblies

• DOI: 10.1038/s41467-018-06829-3
• Publication Date: 2018-10-12T11:00:08Z
• Authors: Ritesh Haldar; Marius Jakoby; Antoine Mazel; Qiang Zhang; Alexander Welle; Tawheed Mohamed; Peter Krolla; Wolfgang Wenzel; Stéphane Diring; Fabrice Odobel; Bryce S. Richards; Ian A. Howard; Christof Wöll
• Keywords: Chromophore; Excimer

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