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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 10
BKCSDE 30(10)
October 20, 2009 

Preparation and Luminescent Properties of a Novel Carbazole Functionalized Bis-β-diketone Ligand and Corresponding Eu(III) and Tb(III) Complexes
Wei Zhang, Chang hui Liu, Rui ren Tang*, Chang Quan Tang
Organic ligand, Carbazole, Bis-β-diketone, Eu(III) and Tb(III) complexes, Luminescent property
A novel carbazole functionalized bis-β-diketone type organic ligand, 1,1′-(2,6-bispyridyl)bis-3-(9-ethylcarbazole- 3-yl)-1,3-propanedione (H2L) and its corresponding lanthanide complexes Eu2(L)3 and Tb2(L)3 were successfully prepared. The ligand and complexes were characterized in detail based on FT-IR spectra, 1H NMR and elemental analysis. The observed UV-Vis absorption and photoluminescence properties of the complexes were investigated, it shows that the Eu(III) and Tb(III) ions can be sensitized efficiently by the ligand (H2L) to some extent, in particular, the complex Tb2(L)3 exhibits a more excellent luminescence property than the Eu(III) complex. Meanwhile, the introduction of the carbazole moiety can enlarge the π-conjugated system of the ligand and enhance the luminescent intensity of the complexes. The results show that the complexes would be used as excellent luminescent materials.
2213 - 2216
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