title: Enhancement of two-photon absorption cross-section and singlet-oxygen generation in porphyrins upon beta-functionalization with donor-acceptor substituents.
abstract: 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.
authors.affiliation: Department of Materials Science and INSTM, University of Milano-Bicocca, Italy.
authors.forename: Marika
authors.initials: M
authors.lastname: Morone
authors.forename: Luca
authors.initials: L
authors.lastname: Beverina
authors.forename: Alessandro
authors.initials: A
authors.lastname: Abbotto
authors.forename: Fabio
authors.initials: F
authors.lastname: Silvestri
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Collini
authors.forename: Camilla
authors.initials: C
authors.lastname: Ferrante
authors.forename: Renato
authors.initials: R
authors.lastname: Bozio
authors.forename: Giorgio A
authors.initials: GA
authors.lastname: Pagani