Rapid Energy Transfer Enabling Control of Emission Polarization in Perylene Bisimide Donor–Acceptor Triads
- Christopher Menelaou (1347357)
- Jeroen ter Schiphorst (1355607)
- Amol M. Kendhale (1355619)
- Patrick Parkinson (1333380)
- Michael G. Debije (1355613)
- Albertus P. H. J. Schenning (1355601)
- Laura M. Herz (1315989)
DOIAbstract
Materials showing rapid intramolecular energy transfer and polarization switching are of interest for both their fundamental photophysics and potential for use in real-world applications. Here, we report two donor–acceptor–donor triad dyes based on perylene-bisimide subunits, with the long axis of the donors arranged either parallel or perpendicular to that of the central acceptor. We observe rapid energy transfer (<2 ps) and effective polarization control in both dye molecules in solution. A distributed-dipole Förster model predicts the excitation energy transfer rate for the linearly arranged triad but severely underestimates it for the orthogonal case. We show that the rapid energy transfer arises from a combination of through-bond coup...
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