title: Energy transfer in diiodoBodipy-grafted upconversion nanohybrids.
abstract: Steady-state and time-resolved emission studies on nanohybrids consisting of NaYF4:Yb,Er and a diiodo-substituted Bodipy (UCNP-IBDP) show that the Yb(3+) metastable state, formed after absorption of a near-infrared (NIR) photon, can decay via two competitive energy transfer processes: sensitization of IBDP after absorption of a second NIR photon and population of Er(3+) excited states.
authors.affiliation: Instituto de Ciencia Molecular (ICMol)/Departamento de Química Orgánica, Universidad de Valencia, C/ Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain. julia.perez@uv.es maria.gonzalez@uv.es.
authors.forename: Laura
authors.initials: L
authors.lastname: Francés-Soriano
authors.affiliation: IMDEA Energy Institute, Parque tecnológico de Móstoles, Avda. Ramón de la Sagra, 3, 28935, Móstoles, Madrid, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Liras
authors.affiliation: Wrocław Research Centre EIT+, ul. Stabłowicka 147, 54-066 Wrocław, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Kowalczyk
authors.affiliation: Department of Excited States Spectroscopy, Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul.Okolna 2, 50-422 Wroclaw, Poland.
authors.forename: Artur
authors.initials: A
authors.lastname: Bednarkiewicz
authors.affiliation: Instituto de Ciencia Molecular (ICMol)/Departamento de Química Orgánica, Universidad de Valencia, C/ Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain. julia.perez@uv.es maria.gonzalez@uv.es.
authors.forename: Maria
authors.initials: M
authors.lastname: González-Béjar
authors.affiliation: Instituto de Ciencia Molecular (ICMol)/Departamento de Química Orgánica, Universidad de Valencia, C/ Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain. julia.perez@uv.es maria.gonzalez@uv.es.
authors.forename: Julia
authors.initials: J
authors.lastname: Pérez-Prieto