[60]fullerene-stoppered porphyrinorotaxanes: pronounced elongation of charge-separated-state lifetimes.
A series of Sauvage-type porphyrinorotaxanes containing [60]fullerene stoppers have been synthesized by a convergent route. Photoinduced energy transfer and electron-transfer reactions in these rotaxanes yield long-distance charge-separated radical-pair states, whose lifetimes in solution at ambient temperatures are as high as 32 mus, depending on the distance between the fullerene and zinc porphyrin chromophores.
Department of Chemistry, New York University, New York, New York 10003, USA.
Ke
K
Li
Paul J
PJ
Bracher
Dirk M
DM
Guldi
M Angeles
MA
Herranz
Luis
L
Echegoyen
David I
DI
Schuster