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- W4214659180 endingPage "1541" @default.
- W4214659180 startingPage "1530" @default.
- W4214659180 abstract "A boron dipyrromethene (BODIPY) derivative bearing a cis-proline residue at the meso-position crystallizes in the form of platelets with strong (i.e., ΦF = 0.34) red fluorescence, but the absorption and emission spectra differ markedly from those for dilute solutions. A key building block for the crystal is a pseudo-dimer where hydrogen bonding aligns the proline groups and separates the terminal chromophores by ca. 25 Å. Comparison with a covalently linked bichromophore suggests that one-dimensional (1D) excitonic coupling between the terminals is too small to perturb the optical properties. However, accretion of the pseudo-dimer forms narrow channels possessing a high density of chromophores. The resultant absorption spectrum exhibits strong excitonic splitting, which can be explained quantitatively using the extended dipole approach and allowing for coupling between ca. 30 BODIPY units. Fluorescence, which decays with a lifetime of 2.2 ns, is assigned to a delocalized and (slightly) super-radiant BODIPY dimer situated at the interface and populated via electronic energy transfer from the interior." @default.
- W4214659180 created "2022-03-02" @default.
- W4214659180 creator A5018060801 @default.
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- W4214659180 creator A5052629022 @default.
- W4214659180 creator A5070194029 @default.
- W4214659180 creator A5089193953 @default.
- W4214659180 date "2022-03-01" @default.
- W4214659180 modified "2023-09-26" @default.
- W4214659180 title "Light-Harvesting Crystals Formed from BODIPY-Proline Biohybrid Conjugates: Antenna Effects and Excitonic Coupling" @default.
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