TY - JOUR
T1 - Synthesis and luminescence of binuclear lanthanide complexes with 4,6-bis(diphenylphosphino)pyrimidine dioxide as a bridging ligand
AU - Bryleva, Yuliya A.
AU - Yzhikova, Karina M.
AU - Artem'ev, Alexander V.
AU - Davydova, Maria P.
AU - Rakhmanova, Mariana I.
AU - Polyakova, Evgenia V.
AU - Glinskaya, Ludmila A.
AU - Samsonenko, Denis G.
N1 - Funding Information:
The research was supported by the Russian Federation President Council for Grants (grant no. MK-1939.2022.1.3). The authors thank the Multi-Access Chemical Research Centre SB RAS for spectral and analytical measurements and XRD Facility of NIIC SB RAS for the data collection. Structural study was performed with the financial support of Ministry of Science and Higher Education of the Russian Federation (projects no. 121031700321-3 and 121031700313-8).
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/2/1
Y1 - 2023/2/1
N2 - Five new isostructural binuclear complexes [Ln2L2(H2O)2(NO3)6] (Ln = Sm, Eu, Gd, Tb, and Dy) based on 4,6-bis(diphenylphosphino)pyrimidine dioxide (L) have been synthesized, and their luminescence properties have been studied. The complexes consist of two nine-coordinated Ln(III) atoms linked by two L ligands in the O,O´-bridging manner. The Gd3+ complex possesses ligand-centered emission, while its Tb3+ and Eu3+ analogs exhibit metal-centered phosphorescence only. At the same time, the Sm3+ and Dy3+ complexes show both metal- and ligand-centered emission. In the complexes studied, the ligand L sensitizes the Tb3+ emission most effectively due to the relatively high triplet energy level (23900 cm−1). Moreover, mixed-metal complexes [Tb2xEu2(1-x)L2(H2O)2(NO3)6] (x = 0.9, 0.8, 0.6, 0.4, 0.2) have been synthesized, whose emission color can be tuned from green to yellow and red through adjusting of the Tb/Eu ratio.
AB - Five new isostructural binuclear complexes [Ln2L2(H2O)2(NO3)6] (Ln = Sm, Eu, Gd, Tb, and Dy) based on 4,6-bis(diphenylphosphino)pyrimidine dioxide (L) have been synthesized, and their luminescence properties have been studied. The complexes consist of two nine-coordinated Ln(III) atoms linked by two L ligands in the O,O´-bridging manner. The Gd3+ complex possesses ligand-centered emission, while its Tb3+ and Eu3+ analogs exhibit metal-centered phosphorescence only. At the same time, the Sm3+ and Dy3+ complexes show both metal- and ligand-centered emission. In the complexes studied, the ligand L sensitizes the Tb3+ emission most effectively due to the relatively high triplet energy level (23900 cm−1). Moreover, mixed-metal complexes [Tb2xEu2(1-x)L2(H2O)2(NO3)6] (x = 0.9, 0.8, 0.6, 0.4, 0.2) have been synthesized, whose emission color can be tuned from green to yellow and red through adjusting of the Tb/Eu ratio.
KW - Binuclear complex
KW - Lanthanides
KW - Mixed-metal complexes
KW - Phosphine oxides
KW - Photoluminescence
UR - http://www.scopus.com/inward/record.url?scp=85144091988&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2022.116251
DO - 10.1016/j.poly.2022.116251
M3 - Article
AN - SCOPUS:85144091988
VL - 231
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
M1 - 116251
ER -