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  • Lanthanide complexes with 4,4’-Bis(2-sulfonatostyryl)- biphenyl [Elektronski vir] : crystal structures and luminescence properties
    Mikhalyova, Elena ...
    A series of new tris(pyrazolyl)borate (Tp−) and tris(2-pyridylpyrazolyl)borate (TpPy−) Eu3+, Gd3+, Tb3+ and Dy3+ complexes with the dianionic ligand 4,4′-bis(2-sulfonatostyryl)biphenyl (Ssp2−, a ... widely used fluorescent whitener) were synthesized and their luminescence properties were studied. The Gd3+, Tb3+ and Dy3+ compounds possess only ligand-centered emission, arising from the Ssp2− ligand, with quantum yields of up to 60 %. While the emission centers in these complexes are similar, the positions of the luminescence maxima, the emission quantum yields, and the lifetimes change in the order [(Tp2Ln)2Ssp]<[(TpPyLnSsp)2]<[Ln2Ssp3]n. Among the complexes studied, Eu3+-centered emission was observed for only [(Tp2Eu)2Ssp]. In this compound, Tp− plays the role of an antenna ligand for Eu3+-radiation, though the quantum yield is only 5 %.
    Vir: European Journal of Inorganic Chemistry [Elektronski vir]. - ISSN 1099-0682 (Vol. 2022, iss. 4, Feb. 8, 2022, str. 1-11)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2022
    Jezik - angleški
    COBISS.SI-ID - 136121091
    DOI

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