Ševčík Jakub, Urbánek Pavel, Hanulíková Barbora, Čapková Tereza, Urbánek Michal, Antoš Jan, Londesborough Michael G S, Bould Jonathan, Ghasemi Bita, Petřkovský Lukáš, Kuřitka Ivo
Centre of Polymer Systems, Tomas Bata University in Zlín, třída Tomáše Bati 5678, 760 01 Zlín, Czech Republic.
Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Husinec-Řež, Czech Republic.
Materials (Basel). 2021 Jan 27;14(3):589. doi: 10.3390/ma14030589.
In recent work, the boron hydride -BH was announced in the literature as a new laser dye, and, along with several of its derivatives, its solutions are capable of delivering blue luminescence with quantum yields of unity. However, as a dopant in solid polymer films, its luminescent efficiencies reduce dramatically. Clarification of underlying detrimental effects is crucial for any application and, thus, this contribution makes the initial steps in the use of these inorganic compounds in electrooptical devices based on organic polymer thin films. The photoluminescence behavior of the highly luminescent boron hydrides, -BH and 3,3',4,4'-Et--BH, were therefore investigated. The quantum yields of luminescence and photostabilities of both compounds were studied in different solvents and as polymer-solvent blends. The photophysical properties of both boranes are evaluated and discussed in terms of their solvent-solute interactions using photoluminescence (PL) and NMR spectroscopies. The UV degradability of prepared thin films was studied by fluorimetric measurement. The effect of the surrounding atmosphere, dopant concentration and the molecular structure were assessed.
在最近的研究工作中，文献报道硼氢化物 -BH 是一种新型激光染料，其溶液以及几种衍生物能够产生量子产率为 1 的蓝色发光。然而，作为固体聚合物薄膜中的掺杂剂，其发光效率会大幅降低。明确潜在的有害影响对于任何应用都至关重要，因此，本研究为在基于有机聚合物薄膜的电光器件中使用这些无机化合物迈出了第一步。因此，对高发光性的硼氢化物 -BH 和 3,3',4,4'-Et--BH 的光致发光行为进行了研究。研究了这两种化合物在不同溶剂以及聚合物 - 溶剂共混物中的发光量子产率和光稳定性。利用光致发光（PL）和核磁共振光谱，从溶剂 - 溶质相互作用的角度对两种硼烷的光物理性质进行了评估和讨论。通过荧光测量研究了制备薄膜的紫外线降解性。评估了周围气氛、掺杂剂浓度和分子结构的影响。
