The Photostability of Novel Boron Hydride Blue Emitters in Solution and Polystyrene Matrix

0541217 - ÚACH 2022 RIV CH eng J - Journal Article
Ševčík, J. - Urbánek, P. - Hanulíková, B. - Čapková, T. - Urbánek, M. - Antoš, J. - Londesborough, Michael Geoffrey Stephen - Bould, Jonathan - Ghasemi, B. - Petřkovský, L. - Kuřitka, I.
The Photostability of Novel Boron Hydride Blue Emitters in Solution and Polystyrene Matrix.
Materials. Roč. 14, č. 3 (2021), č. článku 589. E-ISSN 1996-1944
Institutional support: RVO:61388980
Keywords : boronhydride emitters * anti-B18H22 * photostability * oled
OECD category: Inorganic and nuclear chemistry
Impact factor: 3.748, year: 2021
Method of publishing: Open access

In recent work, the boron hydride anti-B18H22 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, anti-B18H22 and 3,3 ',4,4 '-Et-4-anti-B18H18, 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.
Permanent Link: http://hdl.handle.net/11104/0318806