Journal of Fluorescence

, Volume 26, Issue 2, pp 567–576 | Cite as

Synthesis and Fluorescence Properties of Eu3+, Tb3+ Complexes with Schiff Base Derivatives

  • Yanhong Liu
  • Weihua Kong
  • Zehui Yang
  • Ming Dai
  • Ling Shi
  • Dongcai Guo
ORIGINAL ARTICLE
First Online:
Received:
Accepted:

Abstract

Novel Schiff base ligands derived from N′-benzylidene-benzohydrazide (substituted by –H, −CH3, −OCH3, −Cl) and 2-chloro-N-phenylacetamide were synthesized. The solid complexes of rare earth (Eu, Tb) nitrate with these Schiff base ligands were synthesized and characterized by elemental analysis, EDTA titrimetric analysis, thermal analysis, infrared spectra and UV–Vis spectra analysis. The fluorescence properties of rare earth (Eu, Tb) complexes in solid were studied. Under the excitation of ultraviolet light, these complexes exhibited characteristic emission of europium and terbium ions. The results showed that the ligand favored energy transfer to the emitting energy of Eu and Tb ions. Effects of different ligands on the fluorescence intensity of rare earth (Eu, Tb) complexes had been discussed. The electrochemical properties of rare earth (Eu, Tb) complexes were also investigated.

Keywords

Schiff base Rare earth complexes Fluorescence properties 

Abbreviations

UV–Vis

Ultraviolet visible

EDTA

Ethylenediaminetetraacetic acid

HOMO

Highest occupied molecular orbital

LUMO

Lowest unoccupied molecular orbital

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Notes

Acknowledgments

We are grateful to the financial support of the National Natural Science Foundation of China (No.J1103312; No.J1210040; No.21341010), the Innovative Research Team in University (No.IRT1238) and chemical excellent engineer training program of Hunan university. We also thank Dr. William Hickey, the U.S. professor of HRM, for the English editing on this paper.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Yanhong Liu
    • 1
    • 2
  • Weihua Kong
    • 1
  • Zehui Yang
    • 3
  • Ming Dai
    • 1
  • Ling Shi
    • 1
  • Dongcai Guo
    • 1
    • 2
  1. 1.School of Chemistry and Chemical EngineeringHunan UniversityChangshaChina
  2. 2.Hunan Provincial Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide EmissionsChangshaChina
  3. 3.School of Chemical EngineeringNingbo University of TechnologyNingboChina

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