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• W3089291856 endingPage "18085" @default.
• W3089291856 startingPage "18073" @default.
• W3089291856 abstract "Natural light-harvesting antennae employ a dense array of chromophores to optimize energy transport via the formation of delocalized excited states (excitons), which are critically sensitive to spatio-energetic variations of the molecular structure. Identifying the origin and impact of such variations is highly desirable for understanding and predicting functional properties yet hard to achieve due to averaging of many overlapping responses from individual systems. Here, we overcome this problem by measuring the heterogeneity of synthetic analogues of natural antennae–self-assembled molecular nanotubes–by two complementary approaches: single-nanotube photoluminescence spectroscopy and ultrafast 2D correlation. We demonstrate remarkable homogeneity of the nanotube ensemble and reveal that ultrafast (∼50 fs) modulation of the exciton frequencies governs spectral broadening. Using multiscale exciton modeling, we show that the dominance of homogeneous broadening at the exciton level results from exchange narrowing of strong static disorder found for individual molecules within the nanotube. The detailed characterization of static and dynamic disorder at the exciton as well as the molecular level presented here opens new avenues in analyzing and predicting dynamic exciton properties, such as excitation energy transport." @default.
• W3089291856 created "2020-10-01" @default.
• W3089291856 creator A5009630669 @default.
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• W3089291856 date "2020-09-26" @default.
• W3089291856 modified "2023-10-15" @default.
• W3089291856 title "Molecular versus Excitonic Disorder in Individual Artificial Light-Harvesting Systems" @default.
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• W3089291856 doi "https://doi.org/10.1021/jacs.0c07392" @default.
• W3089291856 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7582617" @default.
• W3089291856 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32985187" @default.
• W3089291856 hasPublicationYear "2020" @default.
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