The Structure and Optical Properties of Luminescent Terbium Terephthalate Metal–Organic Frameworks Doped with Yttrium, Gadolinium, and Lanthanum Ions
The structural features and luminescent properties of heterometallic Tb–Gd, Tb–La, and Tb–Y terephthalate metal–organic frameworks, namely (TbxM1−x)2(1,4-bdc)3∙4H2O (M = Gd, La, Y), were studied in detail in a wide concentration range (x = 0.001–1). The crystalline phase of synthesized compounds corresponds to Ln2(1,4-bdc)3·4H2O. The lifetime of 5D4 decreased with increased Tb3+ concentration, but PLQY depends non-linearly on the Tb3+ concentration. The 50% substitution of Tb3+ for Y3+, Gd3+, or La3+ ions result in the significant enhancement of photoluminescence quantum yield, up to 1.6 times. The morphology, thermal stability, and vibrational structure of the selected homo- and bi-metallic materials is reported as well.
Authors
- Andrey S. Mereshchenko (ORCID: https://orcid.org/0000-0001-9390-1446)
- Anna S. Petrova (ORCID: https://orcid.org/0009-0002-7581-495X)
- Y. N. Toikka (ORCID: https://orcid.org/0000-0003-2926-0079)
- M. Yu. Skripkin (ORCID: https://orcid.org/0000-0001-9841-150X)
- N. A. Bogachev (ORCID: https://orcid.org/0000-0002-9495-0669)
- Ilya E. Kolesnikov (ORCID: https://orcid.org/0000-0002-5051-4064)
- Oleg S. Butorlin (ORCID: https://orcid.org/0009-0003-8815-5540)
- Mikhail N. Ryazantsev (ORCID: https://orcid.org/0000-0003-3413-1706)
- Sergey N. Orlov (ORCID: https://orcid.org/0000-0003-2735-6712)
Institutions
- Saint Petersburg Academic University (RU)
- St Petersburg University (RU)
- Peter the Great St. Petersburg Polytechnic University (RU)
Publication Details
- Journal
- Crystals
- Published
- 2024-11-08
- DOI
- https://doi.org/10.3390/cryst14110966
- Citations
- 1
- Primary Topic
- Lanthanide and Transition Metal Complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.12
Funders
- Saint Petersburg State University
- Russian Science Foundation
- Division of Materials Research