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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

Title	Preparation and Luminescent Properties of a Novel Carbazole Functionalized Bis-β-diketone Ligand and Corresponding Eu(III) and Tb(III) Complexes
Author	Wei Zhang, Chang hui Liu, Rui ren Tang*, Chang Quan Tang
Keywords	Organic ligand, Carbazole, Bis-β-diketone, Eu(III) and Tb(III) complexes, Luminescent property
Abstract	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.
Page	2213 - 2216
Full Text	PDF

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