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Citation: Li Yong, Zhang Ke-Xu, Tao Dong-Liang, Wang Zhi-Xian, Gao Hong-Cheng, Wu Jin-Guang. Luminescence Character of Rare Earth Complexes with Derivatives of Benzoic Acid[J]. Acta Physico-Chimica Sinica, ;2002, 18(04): 292-296. doi: 10.3866/PKU.WHXB20020402 shu

Luminescence Character of Rare Earth Complexes with Derivatives of Benzoic Acid

1.
College of Chemistry and Molecular Engineering,Peking University, Beijing　100871

Received Date: 14 September 2001
Available Online: 15 April 2002

A series of Eu,Tb complexes were synthesized with derivatives of benzoic acid as the first ligand and phenanthroline or 2,2′bipyridine as the second ligand.The structural characterization of the complexes was performed using elemental analysis,FTIR spectroscopy and UVVis spectroscopy.The photoluminescent behaviors of the complexes were investigated using fluorescent spectroscopy.The results showed that introduction of the second ligand improved the solubility of the complexes significantly.As far as the photoluminescent behaviors was concerned,phenanthroline enhanced the fluorescent intensity of Eu complexes but weakened the fluorescent intensity of Tb complexes; while the fluorescent intensity of Tb complexes increased and the fluorescent intensity of Eu complexes decreased upon coordinating with 2,2bipyridine.In addition,introducing of various substitutions onto the aromatic ring of benzoic acid brought about considerable variation of the fluorescent intensity of the Eu,Tb complexes.
- Rare earth complexes;FT-IR spectrum;UV-Vis spectrum;Fluorescent spectrum
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