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Journal of Fluorescence

, Volume 28, Issue 3, pp 775–784 | Cite as

Synthesis, Photoluminescence Behavior of Green Light Emitting Tb(III) Complexes and Mechanistic Investigation of Energy Transfer Process

  • Manju Bala
  • Satish Kumar
  • Rekha Devi
  • Avni Khatkar
  • V. B. Taxak
  • Priti Boora
  • S. P. KhatkarEmail author
ORIGINAL ARTICLE

Abstract

A series of five new terbium(III) ion complexes with 4,4-difluoro-1-phenylbutane-1,3-dione (HDPBD) and anciliary ligands was synthesized. The composition and properties of complexes were analyzed by elemental analysis, IR, NMR, powder X-ray diffaraction, TG-DTG and photoluminescence spectroscopy. These complexes exhibited ligand sensitized green emission at 546 nm associated with 5D4 → 7F5 transitions of terbium ion in the emission spectra. The photoluminescence study manifested that the organic ligands act as antenna and facilitate the absorbed energy to emitting levels of Tb(III) ion efficiently. The enhanced luminescence intensity and decay time of ternary C2-C5 complexes observed due to synergistic effect of anciliary ligands. The CIE color coordinates of complexes came under the green region of chromaticity diagram. The mechanistic investigation of intramolecular energy transfer in the complexes was discussed in detail. These terbium(III) complexes can be thrivingly used as one of the green component in light emitting material and in display devices.

Graphical Abstract

Illustrate the sensitization process of the Tb ion and intramolecular energy transfer process in the Tb3+ complex.

Keywords

Photoluminescence IR Terbium(III) Synergistic effect Energy transfer 

Notes

Acknowledgements

The present work has been supported by Council of Science and Industrial Research (CSIR) of India [09/382(0155)/2012- EMR-I (Manju Bala)].

Supplementary material

10895_2018_2239_MOESM1_ESM.docx (91 kb)
Fig. S1 (DOCX 90 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Manju Bala
    • 1
  • Satish Kumar
    • 1
  • Rekha Devi
    • 1
  • Avni Khatkar
    • 2
  • V. B. Taxak
    • 1
  • Priti Boora
    • 1
  • S. P. Khatkar
    • 1
    Email author
  1. 1.Department of ChemistryMaharshi Dayanand UniversityRohtakIndia
  2. 2.UIET, Maharshi Dayanand UniversityRohtakIndia

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