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Updated: May 4, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
Published on: July 21, 2011
[Solvent effect of europium (III) complex sensitized by charge transfer excited state of functional cation]
Shi-rong Fu1, Meng Shi2, Pei-gao Han2
1Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Laser Institute, Qufu Normal University, Qufu 273165, China. fsr0127@126.com
Abstract:
Abstract In the novel europium (IIl) complex of the form [Eu(tta)4 . DEASPI], the sensitization of lanthanide luminescence is via functional cation The photophysical sensitization process of Eu(tta)4 . DEASPI involves an energy transfer from charge transfer excited state of hemicyanine (aminostyrylpyridinium) cation, and the sensitization mechanism follows Förster resonance energy mechanism. The solvent effect on this new kind of europium (III) complex was investigated in the present work. The europium (III) complex was dissolved in a variety of solvents, i.e., acetone, DMF, ethanol and acetonitrile, and the emission intensity of europium (III) complex in acetonitrile is much higher than in other solvents. The detailed discussion about solvent effect is provided in this paper.
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