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- W2103786540 abstract "Abstract The excited‐state photophysical behavior of a spiral perylene bisimide (PBI) folda‐octamer ( F8 ) tethered to an oligophenylene–ethynylene scaffold is comprehensively investigated. Solvent‐dependent UV/Vis and fluorescence studies reveal that the degree of folding in this foldamer is extremely sensitive to the solvent, thus giving rise to an extended conformation in CHCl 3 and a folded helical aggregate in methylcyclohexane (MCH). The exciton‐deactivation dynamics are largely governed by the supramolecular structure of F8 . Femtosecond transient absorption (TA) in the near‐infrared region indicates a photoinduced electron‐transfer process from the backbone to the PBI core in the extended conformation, whereas excitation power‐ and polarization‐dependent TA measurements combined with computational modeling showed that excitation energy transfer between the unit PBI chromophores is the major deactivation pathway in the folded counterpart." @default.
- W2103786540 created "2016-06-24" @default.
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- W2103786540 date "2015-03-31" @default.
- W2103786540 modified "2023-10-18" @default.
- W2103786540 title "Folding-Induced Modulation of Excited-State Dynamics in an Oligophenylene-Ethynylene-Tethered Spiral Perylene Bisimide Aggregate" @default.
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- W2103786540 doi "https://doi.org/10.1002/cphc.201500156" @default.
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