Enhancement of two-photon absorption cross-section and singlet-oxygen generation in porphyrins upon beta-functionalization with donor-acceptor substituents.
The microwave-enhanced synthesis, comparative singlet oxygen sensitization efficiency, and nonlinear optical characterization of a new beta-functionalized porphyrin and its copper complex are described. We show that the introduction of a donor-acceptor push-pull conjugated fragment in the beta position strongly perturbs the porphyrin electronic structure leading to a remarkable one- and two-photon NIR absorption enhancement.
Morone
Marika
M
Department of Materials Science and INSTM, University of Milano-Bicocca, Italy.
Beverina
Luca
L
Abbotto
Alessandro
A
Silvestri
Fabio
F
Collini
Elisabetta
E
Ferrante
Camilla
C
Bozio
Renato
R
Pagani
Giorgio A
GA