Fluorinated fullerenes: sources of donor-acceptor dyads with [18]trannulene acceptors for energy- and electron-transfer reactions.
Fine-tuned control over the donor strength in a series of trannulenes-based donor-acceptor ensembles is used to alter the deactivation path of the photoexcited-state chromophore and to modulate the rates of intramolecular electron transfer. For the first time, a detailed analysis of emission spectra, time-dependent spectroscopic measurements, and electrochemistry prove spectroscopically and kinetically that trannulenes can serve, in a manner similar to C(60) and C(60) monoadducts, as both electron and also as energy acceptor in donor-acceptor ensembles, producing widely different electron-transfer regimes. This investigation also shows that the integration of trannulenes, as a versatile electron-acceptor building block, consistently produces charge recombination in the inverted Marcus region.
Guldi
Dirk M
DM
Institute for Physical and Theoretical Chemistry, Universität Erlangen, 91058 Erlangen, Germany. dirk.guldi@chemie.uni-erlangen.de
Marcaccio
Massimo
M
Paolucci
Francesco
F
Paolucci
Demis
D
Ramey
Jeff
J
Taylor
Roger
R
Burley
Glenn A
GA