Influence of the N-[methylpyridyl]acetamide ligands on the photoluminescent properties of Eu(III)-perchlorate complexes

Teotonio, Ercules E.S.; Espı́nola, José G.P.; Brito, Hermi F.; Malta, Oscar L.; Oliveira, Severino F. de; Faria, Dalva Lúcia Araújo de; Izumi, Celly Mieko Shinohara

doi:10.1016/s0277-5387(02)01032-x

Cited by 165 publications

(89 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By assuming that only nonradiative and radiative processes occur in the depopulation of the 5 D 0 excited state, we can define η as shown in Equation (1). [30] η = A r /(A r + A nr )…”

Section: Resultsmentioning

confidence: 99%

“…[30] It is well known that 5 D 0 Ǟ 7 F 1 belongs to the isolated magnetic dipole transition, and it therefore has nothing to do with the chemical environment around the Eu 3+ ion and can be considered as an internal reference for the whole spectrum. We can calculate A 0J, namely the experimental coefficient for spontaneous emissions according to Equation (3).…”

Section: Resultsmentioning

confidence: 99%

“…We can calculate A 0J, namely the experimental coefficient for spontaneous emissions according to Equation (3). [30] A 0J = A 00 (A 0J /I 01 )(ν 01 /ν 0J )…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Photoactive Europium Hybrids of β‐Diketone‐Modified Polysilsesquioxane Bridge Linking Si–O–B(Ti)–O Xerogels

et al. 2011

View full text Add to dashboard Cite

Polysilsesquioxane bridges are obtained through the single modification of 3‐(triethoxysilyl)propyl isocyanate (TEPIC) by two β‐diketone ligands [thenoyltrifluoroacetylacetone (TTA) and trifluoroacetylacetone (TA)], which behave as linkages between the europium ion and composite host Si–O–M (M = B or Ti) xerogels by controlling the hydrolysis rate of the alkoxy compounds (tetraethyl orthosilicate, titanium butoxide and tributyl borate). Subsequently, luminescent europium hybrid xerogels are assembled and characterized by NMR, Fourier transform infrared (FTIR), ultraviolet absorption and ultraviolet/visible diffuse reflection spectroscopy, X‐ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and photoluminescence spectroscopy through which the decay times (τ) and quantum efficiency (η) can be determined. These results reveal that the lanthanide complexes have been covalently immobilized into the composite inorganic xerogels and the obtained hybrids have the excellent ability of light absorption and emission. The hybrids with composite Si–O–B xerogels possess the matched photoluminescent properties (red emission intensity, lifetimes, and quantum efficiency) as the pure silica oxygen network, both of which show a superior luminescence performance than the hybrids with composite Si–O–Ti xerogels. Besides, the single modification of TTA is favorable for the luminescence of the hybrid xerogels.

show abstract

“…By assuming that only nonradiative and radiative processes occur in the depopulation of the 5 D 0 excited state, we can define η as shown in Equation (1). [30] η = A r /(A r + A nr )…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Photoactive Europium Hybrids of β‐Diketone‐Modified Polysilsesquioxane Bridge Linking Si–O–B(Ti)–O Xerogels

et al. 2011

View full text Add to dashboard Cite

show abstract

“…F 1 transition, which is relatively insensitive to the chemical environments around the Eu 3 + ion, can be considered as a reference for the whole spectrum. Then, A rad could be obtained by Equation (2), [22] in which n 01 and n 0J are the energy baricenters of the Table 3. R values for a series of PMMA-co-Sn 12 Cluster/EuA C H T U N G T R E N N U N G (TTA) 3 phen hybrid materials (0.1, 1, 2, 5, and 10 %).…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Optical Properties of Europium‐Complex‐Doped Inorganic/Organic Hybrid Materials Built from Oxo–Hydroxo Organotin Nano Building Blocks

Fan

Feng

Song

et al. 2010

Chemistry A European J

View full text Add to dashboard Cite

Hybrid materials doped with novel europium complexes were synthesized using PMMA-co-Sn(12)Clusters (copolymers from oxohydroxo-organotin dimethacrylate and methylmethacrylate) as the matrix material. Two types of hybrid materials were obtained: the physically doped product, PMMA-co-Sn(12)Cluster/Eu(TTA)(3)phen, and the grafted product, PMMA-co-Sn(12)Cluster-co-[EuAA(TTA)(2)phen] (TTA = 2-thenoyltrifluoroacetone, phen = phenanthroline and AA = acrylic acid). The hybrid materials exhibited characteristic luminescence of the Eu(3+) ions, and also showed relative especial optical properties compared with samples just using PMMA as the matrix material. The PMMA-co-Sn(12)Cluster matrix exhibited a high physical doping quantity of [Eu(TTA)(3)phen], which can be attributed to the special structure of this kind of hybrid material. GPC (gel-permeation chromatography), TGA (thermogravimetric analysis), SEM, (1)H NMR, ICP (inductively coupled plasma), (119)Sn NMR, FTIR, and diffuse reflectance techniques were employed to characterize the structures and properties of these hybrid materials.

show abstract

“…Na 2 [PdCl 4 ], 3-aminopyridine and 2-amino-3-methylpyrimidine were purchased and used as supplied. 3-Acetylamino-pyridine (3-acpyH) [20] and 2-acetylamino-3-methylpyridine (2-acmpyH) [21] were prepared by literature methods. …”

Section: Methodsmentioning

confidence: 99%

Palladium(II) saccharinate complexes trans-[Pd(sac)2(LH)2] with amino- and acetylamino-pyridine co-ligands: molecular structures of trans-[PdCl2(2-ampyH)2].2dmf (2-ampyH = 2-amino-3-methylpyridine) and trans-[Pd(κ2-2-acmpy)2] (2-acmpyH = 2-acetylamino-3-methylpyridine)

Al‐Jibori

Al-Nassiry

Al-Jibori

et al. 2014

Transition Met Chem

View full text Add to dashboard Cite

Influence of the N-[methylpyridyl]acetamide ligands on the photoluminescent properties of Eu(III)-perchlorate complexes

Cited by 165 publications

References 22 publications

Photoactive Europium Hybrids of β‐Diketone‐Modified Polysilsesquioxane Bridge Linking Si–O–B(Ti)–O Xerogels

Photoactive Europium Hybrids of β‐Diketone‐Modified Polysilsesquioxane Bridge Linking Si–O–B(Ti)–O Xerogels

Synthesis and Optical Properties of Europium‐Complex‐Doped Inorganic/Organic Hybrid Materials Built from Oxo–Hydroxo Organotin Nano Building Blocks

Palladium(II) saccharinate complexes trans-[Pd(sac)2(LH)2] with amino- and acetylamino-pyridine co-ligands: molecular structures of trans-[PdCl2(2-ampyH)2].2dmf (2-ampyH = 2-amino-3-methylpyridine) and trans-[Pd(κ2-2-acmpy)2] (2-acmpyH = 2-acetylamino-3-methylpyridine)

Contact Info

Product

Resources

About