Journal
ORGANIC LETTERS
Volume 16, Issue 9, Pages 2330-2333Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol500572t
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- Region Alsace
- Centre National de la Recherche Scientifique (CNRS)
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Both symmetrical and unsymmetrical alpha-fused dithienyl-BODIPY dyes have been prepared by oxidative ring closure induced by anhydrous FeCl3. Extension of the pi-system in the fused BODIPY leads to a progressive shift to 579 and 665 rim respectively for the absorption wavelength maxima of the mono- and difused dyes relative to the unfused species (lambda(abs) = 502 nm). Linking such dyes to an NIR emitting module provides a panchromatic chromophore with a large absorption cross section in the visible range associated with efficient intramolecular cascade energy transfer.
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