Journal of Shanghai University(Natural Science Edition) ›› 2013, Vol. 19 ›› Issue (1): 90-94.doi: 10.3969/j.issn.1007-2861.2013.01.018

• Mathematics.Physics and Chemistry • Previous Articles     Next Articles

Synthesis and Photoluminescence Properties of Two Organic Europium (Ⅲ) and Terbium (Ⅲ) Complexes

AN Bao-li, HUANG Xiao-di, MA Li-hua, XU Jia-qiang   

  1. College of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2012-03-27 Online:2013-02-28 Published:2013-02-28

Abstract: A new tridentate organic ligand, 4-(4-carbazol-9-yl-butoxy)-pyridine-2,6-dicarboxylic acid (H2CBODPA), has been designed and synthesized.  The orresponding europium and terbium complexes, Na3Eu(CBODPA)3 and Na3Tb(CBODPA)3, have also been synthesized. The effective excitation wavelengths of the two complexes shifted significantly to longer wavelengths by configuration of the organic ligand’s structure, the effective excitation wavelengths shifted about 70 nm to longer wavelengths compared with those of the europium and terbium complexes with pyridine-2,6-dicarboxy acid as a ligand. Characteristic red emissions of europium ions and green emissions of terbium ions were obtained from dilute Na3Eu(CBODPA)3and Na3Tb CBODPA)3 solutions under near ultraviolet radiations at around 350 nm. The results may provide a theoretical basis to the design and synthesis of organic rare earth luminescent bioprobes with longer excitation wavelengths.

Key words: photoluminescence, rare earth terbium complex, longer excitation wavelength, rare earth europium complex

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