Electron transfer in a supramolecular associate of a fullerene fragment.
Herein, we investigate the association of a fullerene fragment, hemifullerene C30H12, with an electron-donating bowl-shaped tetrathiafulvalene derivative (truxTTF). UV/Vis titrations and DFT calculations support formation of the supramolecular complex, for which an association constant of log Ka = 3.6±0.3 in CHCl3 at room temperature is calculated. Remarkably, electron transfer from truxTTF to C30H12 to form the fully charge-separated species takes place upon irradiation of the associate with light, constituting the first example in which a fullerene fragment mimics the electron-accepting behavior of fullerenes within a supramolecular complex.
Departamento de Química Orgánica, Fac. C.C. Químicas, Universidad Complutense de Madrid, Av. Complutense s/n, 28040 Madrid (Spain) http://www.ucm.es/info/fullerene/
María
M
Gallego
Joaquín
J
Calbo
Juan
J
Aragó
Rafael M
RM
Krick Calderon
Fernando H
FH
Liquido
Takahiro
T
Iwamoto
Allison K
AK
Greene
Edward A
EA
Jackson
Emilio M
EM
Pérez
Enrique
E
Ortí
Dirk M
DM
Guldi
Lawrence T
LT
Scott
Nazario
N
Martín
density functional calculations; donor-acceptor systems; fullerenes; photoinduced electron transfer; supramolecular chemistry