Details

Autor(en) / Beteiligte

• Mikhalyova, Elena A.
• Zeller, Matthias
• Goreshnik, Evgeny A.
• Jasinski, Jerry P.
• Butcher, Raymond J.
• Nelyubina, Yulia V.
• Hunter, Jordan L.
• Sedykh, Alexander E.
• Shishkina, Svitlana V.
• Müller‐Buschbaum, Klaus
• Eremenko, Igor L.
• Addison, Anthony W.
• Pavlishchuk, Vitaly V.

Titel

Lanthanide Complexes with 4,4′‐Bis(2‐sulfonatostyryl)‐biphenyl: Crystal Structures and Luminescence Properties

Ist Teil von

• European journal of inorganic chemistry, 2022-02, Vol.2022 (4), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Quelle

Wiley-Blackwell Full Collection

Beschreibungen/Notizen

• 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 %. Although the emission centers in the Tb3+, Gd3+, and Dy3+ complexes described are similar, the positions of the luminescence maxima, the emission quantum yields, and the lifetimes change consistently in the order [(Tp2Ln)2Ssp]<[(TpPyLnSsp)2]<[Ln2Ssp3]n.