title: Tetranuclear Copper(I) Iodide Complexes: A New Class of X-ray Phosphors.
abstract: We report intensive visible light radioluminescence upon X-ray irradiation of archetypal tetranuclear copper(I) iodide complexes containing triphenylphosphine or pyridine ligands in the solid state. These properties, attractive for the design of X-ray responsive materials, can be attributed to the heavy {Cu4I4} cubane-like core, the absence of oxygen quenching of the emissive triplet states, and the high photoluminescence quantum yields. Radioluminescence originates from the same emissive triplet states as those produced by ultraviolet excitation as confirmed by the observed radioluminescence thermochromism. The radioluminescence properties are also preserved after incorporation of these complexes into polystyrene films, making them appealing for the development of plastic scintillators.
authors.affiliation: Institute of Inorganic Chemistry of the Czech Academy of Sciences , v.v.i., Husinec-Řež 1001, 250 68 Řež, Czech Republic.
authors.forename: Kaplan
authors.initials: K
authors.lastname: Kirakci
authors.affiliation: Institute of Physics of the Czech Academy of Sciences , v.v.i., Cukrovarnická 10/112, 162 00 Praha 6, Czech Republic.
authors.forename: Karla
authors.initials: K
authors.lastname: Fejfarová
authors.affiliation: Institute of Physics of the Czech Academy of Sciences , v.v.i., Cukrovarnická 10/112, 162 00 Praha 6, Czech Republic.|Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague , Břehová 7, 115 19 Praha 1, Czech Republic.
authors.forename: Jiří
authors.initials: J
authors.lastname: Martinčík
authors.affiliation: Institute of Physics of the Czech Academy of Sciences , v.v.i., Cukrovarnická 10/112, 162 00 Praha 6, Czech Republic.
authors.forename: Martin
authors.initials: M
authors.lastname: Nikl
authors.affiliation: Institute of Inorganic Chemistry of the Czech Academy of Sciences , v.v.i., Husinec-Řež 1001, 250 68 Řež, Czech Republic.
authors.forename: Kamil
authors.identifier: http://orcid.org/0000-0002-4151-8805
authors.initials: K
authors.lastname: Lang