[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.
Li
Ke
K
Department of Chemistry, New York University, New York, New York 10003, USA.
Bracher
Paul J
PJ
Guldi
Dirk M
DM
Herranz
M Angeles
MA
Echegoyen
Luis
L
Schuster
David I
DI