Summary
1,3- and 1,4-Bis-dipyrrin-benzenes and their various zinc and difluoroboryl chelates are prepared. Their absorption and fluorescence spectra are compared with those of the corresponding mono-dipyrrin derivatives. The conformations of these compounds are analyzed using the ring current model and absorption spectra. Dipole-dipole type transfer of excitation energy is discussed to represent a main photophysical channel in these compounds.
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Falk, H., Schoppel, G. Beiträge zur Chemie der Pyrrolpigmente, 84. Mitt.: Darstellung und Lumineszenz bichromophorer 5-Aryl-dipyrrinderivate. Monatsh Chem 121, 67–76 (1990). https://doi.org/10.1007/BF00810296
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DOI: https://doi.org/10.1007/BF00810296