Enhancement of two-photon absorption cross-section and singlet-oxygen generation in porphyrins upon beta-functionalization with donor-acceptor substituents |
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| Authors: | Morone Marika Beverina Luca Abbotto Alessandro Silvestri Fabio Collini Elisabetta Ferrante Camilla Bozio Renato Pagani Giorgio A |
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| Institution: | Department of Materials Science and INSTM, University of Milano-Bicocca, Italy. |
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| 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. |
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