L. L. Levkov, O. V. Borshchev, S. A. Pisarev, Yu. V. Fedorov, E. A. Svidchenko, N. M. Surin, S. A. Ponomarenko, “Novel organic luminophores with benzene-1,3,5-triyl branching units”, Mendeleev Commun., 2024, Volume 34, Issue 2,Pages <nobr>170

This article is cited in 2 papers

Communications

Novel organic luminophores with benzene-1,3,5-triyl branching units

L. L. Levkov^a, O. V. Borshchev^a, S. A. Pisarev^ab, Yu. V. Fedorov^c, E. A. Svidchenko^a, N. M. Surin^a, S. A. Ponomarenko^ab

^a N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Moscow, Russian Federation
^b Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
^c A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russian Federation

Abstract: Synthesis and examination of two highly luminescent oligophenylene derivatives of 2,1,3-benzothiadiazole with branching centers based on benzene-1,3,5-triyl units are described. These studies in combination with DFT calculations have shown that the presence of the branching centers causes differences in the absorption characteristics and similarity of the emission properties. High molar extinction coefficients (up to 15 × 10⁴ dm³ mol⁻¹ cm⁻¹) in the medium UV-range and blue-green emission with quantum yields of 79–93% make them promising components of wavelength-shifting materials for optical devices.

Keywords: absorption spectrum, fluorescence spectrum, fluorescence quantum yield, organic luminophore, cross-coupling, benzene- 1,3,5-triyl, oligophenylenes, 2,1,3-benzothiadiazole, DFT calculations.

Language: English

DOI: 10.1016/j.mencom.2024.02.004

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