Luminescence Properties of Materials with Eu(III) Complexes:  Role of Ligand, Coligand, Anion, and Matrix

Kłonkowski, Andrzej M.; Lis, Stefan; Pietraszkiewicz, Marek; Hnatejko, Zbigniew; Czarnobaj, Katarzyna; Elbanowski, M.

doi:10.1021/cm0202557

Cited by 180 publications

(96 citation statements)

References 36 publications

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“…10,11 To explore the potential of the complexes for photonic applications (light-converting devices), [12][13][14][15][16][17] it is useful to incorporate the complexes in an inert host matrix. [18][19][20][21][22][23][24][25][26][27] A problem often encountered upon embedding of the luminescent complexes in the host matrix is the nonhomogeneous distribution of the compounds, 28,29 which leads to clustering of lanthanide ions and hence a decrease of the luminescence intensity. 30,31 A more homogeneous distribution of the lanthanide complex in the host matrix can be achieved by covalent coupling of the complexes to this host matrix.…”

Section: Introductionmentioning

confidence: 99%

Thin Films of Highly Luminescent Lanthanide Complexes Covalently Linked to an Organic−Inorganic Hybrid Material via 2-Substituted Imidazo[4,5-f]-1,10-phenanthroline Groups

et al. 2005

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A homogeneous distribution of luminescent lanthanide(III) 2-thenoyltrifluoroacetonate complexes (Ln ) Pr, Nd, Sm, Eu, Dy, Ho, Er, Tm, Yb) in an organic-inorganic hybrid material was obtained by grafting the complexes to the solid matrix via 2-substituted imidazo[4,5-f]-1,10-phenanthroline moieties. Thin films of the silica hybrid material were prepared by the sol-gel method and by spin-coating of the gelating solution on glass slides or on oxidized silicon wafers. The thickness of the thin films was determined by scanning electron microscopy (SEM). High-resolution luminescence spectra of the lanthanide complexes were recorded, and the luminescence decay times were measured. The luminescence quantum yields of europium(III)-doped thin films exposed to different drying conditions were determined by using an integrating sphere.

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Section: Introductionmentioning

confidence: 99%

Thin Films of Highly Luminescent Lanthanide Complexes Covalently Linked to an Organic−Inorganic Hybrid Material via 2-Substituted Imidazo[4,5-f]-1,10-phenanthroline Groups

et al. 2005

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“…The photoluminescent behaviour of these complexes incorporated in solid matrices is very interesting. The preparation of silica composites containing luminescent complexes seems a promising strategy, since the resulting materials can be prepared at room temperature by employing the sol-gel method, hence avoiding thermal degradation of the complex [4][5][6][7][8]. The SiO 2 matrices also have good mechanical and chemical stability, optical transparency, and are easily prepared using well-known procedures.…”

Section: Introductionmentioning

confidence: 99%

Novel luminescent materials based on silica doped with an europium(III) complex of 2,6-dihydroxybenzoic acid

Soares‐Santos

Nogueira

Paz

et al. 2004

Journal of Alloys and Compounds

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Novel luminescent materials were prepared by introducing a new Eu 3+ complex of 2,6-dihydroxybenzoic acid (2,6-H 2 dhb) into a silica gel made by the sol-gel method. The crystal structure of the resulting complex [ n Bu 4 N] 2 [Eu(2,6-Hdhb) 5 (H 2 O) 2 ] was determined using single-crystal X-ray diffraction. The compound was further characterised using FTIR, FT-Raman and elemental analysis. Photoluminescence measurements were performed for the isolated Eu(III) 2,6-dihydroxybenzoate complex and also for the related silica composite material.

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“…Presence of the bands connected with transitions from higher 5 D 1 level indicates small quenching of the Eu 3? ions by -OH oscillators originating from cellulose (Klonkowski et al 2003).…”

Section: The Photoluminescence (Pl) Properties Of Fibersmentioning

confidence: 99%

Luminescent cellulose fibers activated by Eu3+-doped nanoparticles

et al. 2012

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UV-active cellulose fibers were obtained by dry-wet method spinning an 8 % by weight acellulose solution in N-methylomorpholine-N-oxide (NMMO) modified by europium-doped gadolinium oxyfluoride Gd 4 O 3 F 6 :Eu 3? containing 5 mol (%) of the dopant. Photoluminescent nanoparticles were introduced in the in powder form into a polymer matrix during the process of cellulose dissolution in NMMO. The dependencies of emission intensity on excitation energy and the concentration of Gd 4 O 3-F 6 :Eu 3? nanoparticles in the final cellulosic products were examined by photoluminescence spectroscopy (excitation and emission). The fiber structure was studied by X-ray powder diffraction analysis. The size and dispersity of the nanoparticles in the polymer matrix were evaluated using scanning electron microscopy and X-ray microanalysis. The influence of different concentration particles (in the range from 0.5 to 5 % by weight) on the mechanical properties of the fibers, such as tenacity and elongation at break, were determined.

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Luminescence Properties of Materials with Eu(III) Complexes: Role of Ligand, Coligand, Anion, and Matrix

Cited by 180 publications

References 36 publications

Thin Films of Highly Luminescent Lanthanide Complexes Covalently Linked to an Organic−Inorganic Hybrid Material via 2-Substituted Imidazo[4,5-f]-1,10-phenanthroline Groups

Thin Films of Highly Luminescent Lanthanide Complexes Covalently Linked to an Organic−Inorganic Hybrid Material via 2-Substituted Imidazo[4,5-f]-1,10-phenanthroline Groups

Novel luminescent materials based on silica doped with an europium(III) complex of 2,6-dihydroxybenzoic acid

Luminescent cellulose fibers activated by Eu3+-doped nanoparticles

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