title: Down shifting in poly(vinyl alcohol) gels doped with terbium complex.
abstract: Novel poly(vinyl alcohol) (PVA) based soft gels with luminescent properties are detailed in this contribution. Lanthanide complex of terbium ions with anthranilic acid, Tb(ant)3·2H2O, was synthesized and incorporated into a DMSO/water solution, followed by addition of PVA, to attain soft gels at room temperature. Morphological and thermal analyses revealed homogeneous distribution of Tb(ant)3·2H2O into the PVOH/DMSO/water gel, and that incorporation of the terbium complex does not alter the thermal properties of the gels. The gels are transparent and luminescent, as they exhibit Large Stokes shift down shifting (LSS DS) up to 400nm, with very high emission quantum yield, that was found to be function of Tb complex concentration.
authors.affiliation: Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy.
authors.forename: Maria Laura
authors.initials: ML
authors.lastname: Di Lorenzo
authors.affiliation: Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy. Electronic address: mariacristina.cocca@cnr.it.
authors.forename: Mariacristina
authors.initials: M
authors.lastname: Cocca
authors.affiliation: Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Avella
authors.affiliation: Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy.
authors.forename: Gennaro
authors.initials: G
authors.lastname: Gentile
authors.affiliation: Leitat Technological Center, C/de la Innovació, 2, 08225 Terrassa, Barcelona, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Gutierrez
authors.affiliation: Leitat Technological Center, C/de la Innovació, 2, 08225 Terrassa, Barcelona, Spain.
authors.forename: Monica
authors.initials: M
authors.lastname: Della Pirriera
authors.affiliation: Leitat Technological Center, C/de la Innovació, 2, 08225 Terrassa, Barcelona, Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: Torralba-Calleja
authors.affiliation: Dublin Energy Lab, Focas Institute & School of Physics, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland.
authors.forename: Manus
authors.initials: M
authors.lastname: Kennedy
authors.affiliation: Dublin Energy Lab, Focas Institute & School of Physics, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland.
authors.forename: Hind
authors.initials: H
authors.lastname: Ahmed
authors.affiliation: Dublin Energy Lab, Focas Institute & School of Physics, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland.
authors.forename: John
authors.initials: J
authors.lastname: Doran
keywords: Down-shifting; Poly(vinyl alcohol); Quantum yield; RE complex; Terbium