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Praseodymium/Polyureasulfone Complexes with Unusual Thermal, Luminescent and Magnetic Properties
Author(s) -
Ye Sunjie,
Fang Li,
Lu Yun,
Lin Zhanru,
Xue Gi
Publication year - 2010
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201000027
Subject(s) - praseodymium , chemistry , luminescence , lone pair , phase transition , raman spectroscopy , polymer chemistry , materials science , thermodynamics , inorganic chemistry , molecule , organic chemistry , physics , optoelectronics , optics
A soluble praseodymium complex was synthesized using a polymeric PUDS ligand. FTIR and Raman spectra suggest that the >NH lone pair in PUDS can interact with the Pr 3+ centers. DSC results show that the coordination effect causes a significant increase of the phase transition temperature. The emission spectrum of Pr‐PUDS indicates an efficient energy transfer from the macromolecular ligand to the coordinated Pr 3+ ion. The magnetic behavior as function of applied magnetic field or temperature (50–450 °C) and some unusual transitions in the M versus T plots are reported and discussed, which demonstrate that the magnetic properties of the Pr‐PUDS strongly depend on the phase transition.