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Rapid energy transfer in cascade-type bodipy dyes

Lookup NU author(s): Emeritus Professor Anthony Harriman, Dr Guillaume Izzet


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Three new molecular dyads, comprising a bora-3a,4a-diaza-s-indacene (Bodipy) dye linked to two aromatic polycycles via the boron center, have been synthesized and fully characterized. The polycyclic compounds are either pyrene or perylene, or a mixture of both. Whereas the absorption spectral profiles contain important contributions from each of the subunits, fluorescence occurs exclusively from the Bodipy fragment. Intramolecular excitation energy transfer is extremely efficient in each case, even though spectral overlap integrals for the pyrene-based system are modest. Although these polycycles are sterically congested, molecular dynamics simulations indicate that they are in dynamic motion, and this hinders proper computation of the orientation factors for Förster-type energy transfer. These new dyes, especially the mixed polycycle system, greatly extend the range of excitation wavelengths that can be used for fluorescence microscopy. © 2006 American Chemical Society.

Publication metadata

Author(s): Harriman A, Izzet G, Ziessel R

Publication type: Article

Publication status: Published

Journal: Journal of the American Chemical Society

Year: 2006

Volume: 128

Issue: 33

Pages: 10868-10875

ISSN (print): 0002-7863

ISSN (electronic): 1943-2984

Publisher: American Chemical Society


DOI: 10.1021/ja0631448


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