@article{Sun2023, 
author = {Peng-Fei Sun and Xiao-Nan Zhang and Cai-Hong Fan and Wei-Peng Chen and Yan-Zhen Zheng},
title = {Tricine-supported polyoxo(alkoxo)lanthanide cluster {Ln15} (Ln = Eu, Gd, Tb) with magnetic refrigerant and fluorescent properties},
year = {2023},
journal = {Polyoxometalates},
volume = {2},
number = {2},
pages = {9140026},
keywords = {polymetallic complexes, lanthanide elements, luminescence, magnetic refrigeration, magnetic exchange},
url = {https://www.sciopen.com/article/10.26599/POM.2023.9140026},
doi = {10.26599/POM.2023.9140026},
abstract = {A family of polyoxo(alkoxo)lanthanide cluster {Ln15} (Ln = Eu (1), Gd (2), Tb (3)) was successfully isolated via a simple hydrolysis reaction of lanthanide metal ions in the presence of tricine ligands. X-ray diffraction analyses revealed that {Ln15} displayed a wheel-like structure with a µ5-chloride anion as a template. Interestingly, each analog showed distinctive functions based on the different Ln(III) ions. Complexes 1 and 3 in the solid state emitted the characteristic fluorescence of Eu(III) or Tb(III). The fluorescence lifetimes of the 5D0 excited state for 1 and the 5D4 excited state for 3 were tested, and the values were 890 and 250 μs, respectively. Meanwhile, gadolinium analog 2 exhibited a magneto-caloric effect at ultralow temperatures with a maximum −ΔSm value of 29.9 J·kg−1·K−1 at 3 K and 7 T.}
}