Preparation and photoluminescent properties of europium complexes with methoxy derivatives of 2′-hydroxy-2-phenylacetophenones

Luminescent properties of europium and terbium complexes with 2′-hydroxy-4′,6′-dimethoxyacetophenone

“…The complex having bright red emission and good PL intensity (64.23 cd/m 2 ) might be promisingly applicable for various display applications. The present europium complex has better photoluminescent intensity (64.23 cd/m 2 ) than earlier reported complexes Eu(L 1 ) 3 Á2H 2 O (61.17 cd/m 2 ), where L 1 = 2 0 -hydroxy-4 0 - [2], Eu(HMAP) 3 Á2H 2 O (62.13 cd/m 2 ) where HMAP = 2 0 -hydroxy-4 0 -methoxyacetophenone [28] and Eu(TNB)3.phen, where TNB = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione and phen = 1,10-phenanthroline [6].…”

“…Among the rare earth ions, trivalent Eu +3 and Tb +3 ions have attracted more attention due to their high luminescence intensity as well as high color purity [1][2][3][4][5][6][7][8][9][10]. Fluorescence complexes can be classified into different categories such as inorganic complexes [11], organic complexes [12], inorganic-organic hybrid complexes [13] based on the rare earth ions and ligands.…”

Preparation and Physical Properties of Red-photoluminescent Graphene/Europium(III)/Picolinate

“…Those four 5 D 0 → 7 F peaks are consistent with other europium complexes. 18 The observed bands are not well-resolved in solid pellet sample compared to the solution sample of the corresponding europium picolinate complex, 10 but band positions are consistent. The emission color was analyzed by using the Commision de I Enclairage (CIE) chromaticity coordinate diagram as shown in Figure 4 (b).…”

Optical Properties of Terbium (III) Complex with Benzoylacetanilide Ligand

“…Therefore, the central rare earth ion is coordinated with light harvesting organic ligand with high absorption coefficient to increase the luminescence intensity and stability of the complexes. The organic ligand helped in the absorption of the energy and transferred it to the central metal ion through sensitization process [7]. Among the organic ligands, benzoylacetanilide emerged as a good sensitizer for the rare earth complexes.…”