Kirakci Kaplan, Fejfarová Karla, Martinčík Jiří, Nikl Martin, Lang Kamil
Institute of Inorganic Chemistry of the Czech Academy of Sciences , v.v.i., Husinec-Řež 1001, 250 68 Řež, Czech Republic.
Institute of Physics of the Czech Academy of Sciences , v.v.i., Cukrovarnická 10/112, 162 00 Praha 6, Czech Republic.
Inorg Chem. 2017 Apr 17;56(8):4610-4615. doi: 10.1021/acs.inorgchem.7b00240. Epub 2017 Apr 4.
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 {CuI} 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.
我们报道了在固态下，对含有三苯基膦或吡啶配体的典型四核碘化亚铜配合物进行X射线辐照时，会产生强烈的可见光辐射发光。这些特性对于设计X射线响应材料具有吸引力，可归因于重的{CuI}类立方烷核心、发射三重态不存在氧猝灭以及高光致发光量子产率。如观察到的辐射发光热致变色所证实，辐射发光源自与紫外线激发产生的相同发射三重态。将这些配合物掺入聚苯乙烯薄膜后，其辐射发光特性也得以保留，这使其在塑料闪烁体的开发中具有吸引力。
