title: Light-harvesting antennae based on photoactive silicon nanocrystals functionalized with porphyrin chromophores.
abstract: Silicon nanocrystals functionalized with tetraphenylporphyrin Zn(II) chromophores at the periphery perform as light harvesting antennae: excitation of the porphyrin units in the visible spectral region yields sensitized emission of the silicon nanocrystal core in the near infrared with a long lifetime (λ(max) = 905 nm, τ = 130 μs). This result demonstrates that this hybrid material has a potential application as a luminescent probe for bioimaging.
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy. paola.ceroni@unibo.it.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fermi
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy. paola.ceroni@unibo.it.
authors.forename: Mirko
authors.initials: M
authors.lastname: Locritani
authors.affiliation: Department of Chemistry, University of Milan, INSTM Research Unit, via C. Golgi 19, 20133 Milano, Italy.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Di Carlo
authors.affiliation: Department of Chemistry, University of Milan, INSTM Research Unit, via C. Golgi 19, 20133 Milano, Italy.
authors.forename: Maddalena
authors.initials: M
authors.lastname: Pizzotti
authors.affiliation: Dipartimento di Scienze Chimiche e Farmaceutiche, INSTM UdR Ferrara, Via Fossato di Mortara 17, 44121 - Ferrara, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Caramori
authors.affiliation: Department of Chemical Engineering, Texas Materials Institute, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, TX 78712, USA. korgel@che.utexas.edu.
authors.forename: Yixuan
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Department of Chemical Engineering, Texas Materials Institute, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, TX 78712, USA. korgel@che.utexas.edu.
authors.forename: Brian A
authors.initials: BA
authors.lastname: Korgel
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy. paola.ceroni@unibo.it and INSTM UdR Bologna, Via Selmi 2, 40126 Bologna, Italy. giacomo.bergamini@unibo.it.
authors.forename: Giacomo
authors.initials: G
authors.lastname: Bergamini
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy. paola.ceroni@unibo.it and Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SOLAR-CHEM), Italy.
authors.forename: Paola
authors.initials: P
authors.lastname: Ceroni