Synthesis and luminescence property of rare earth complex nanoparticles dispersed within pores of modified mesoporous silica

Bian, Li-juan; Xi, Hong-An; Qian, Xuefeng; Yin, Jie; Zhu, Zhiwei; Lu, Qinghua

doi:10.1016/s0025-5408(02)00934-0

Cited by 33 publications

(17 citation statements)

References 18 publications

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“…In addition, comparing the spectrum of the hybrid Eu(VP) 4 –MPSSi with that of the VP, the characteristic peak of pyridine ring from VP at 1596 cm −1 (γ C=C+C=N ) is blueshifted to 1660 cm −1 in Eu(VP) 4 –MPSSi, suggesting that the coordination bonds have formed between Eu 3+ and N from VP segments of block copolymer. These results are consistent with those of a previous study (38,39). Furthermore, the stretching vibrations of the silica (Si–O–Si) at 1031–1103 cm −1 of the silane crosslinking reagents‐modified silica also appeared in the spectrum of the hybrid Eu(VP) 4 –MPSSi, indicating that the Eu‐complex monomer had been grafted onto the functionalized silica microspheres by free radical copolymerization.…”

Section: Resultssupporting

confidence: 94%

Novel Rare Earth–Polyvinyl Pyridine Complex Functionalized Hybrid Silica Microspheres: Molecular Assembly and Photophysical Property

Guo

Yan

2010

Photochem & Photobiology

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The functional silica microspheres are derived from the three different silane crosslinking reagents, and then the polyvinyl pyridine-based rare earth hybrids are synthesized through free radical copolymerization of rare earth-vinyl pyridine complex monomer with these functionalized silica microspheres (RE = Eu, Tb). The obtained hybrids are characterized by Fourier transform infrared, X-ray diffraction, Scanning electronic microscope and photoluminescence spectra. The intramolecular energy transfer process between rare earth ions and polymer polyvinyl pyrrolidone matrices took place within these polymer-based hybrids and especially the quantum efficiency of europium hybrids are determined, suggesting that the hybrid material systems derived from different functional silica microspheres present different luminescence efficiencies.

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Section: Resultssupporting

confidence: 94%

Novel Rare Earth–Polyvinyl Pyridine Complex Functionalized Hybrid Silica Microspheres: Molecular Assembly and Photophysical Property

Guo

Yan

2010

Photochem & Photobiology

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“…Additionally, the peak at 515 cm À 1 originates from the n Ho-N vibration. It is concluded from the above observations that the coordination bonds were formed between holmium and tfnd, holmium and dione (or dafone), respectively [21,22]. The strong bands in the range of 1000-1300 cm À 1 correspond to the vibrations of C-F bands [23].…”

Section: Ftir and Dr Spectramentioning

confidence: 77%

NIR-luminescence from ternary lanthanide [HoIII, PrIII and TmIII] complexes with 1-(2-naphthyl)-4,4,4-trifluoro-1,3-butanedionate

Dang

Wang

et al. 2011

Journal of Luminescence

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“…2, curve A), peaks appear in the range 400±438 cm ±1 , corresponding to m Er±O vibrations, and there is a peak at 515 cm ±1 , due to a m Er±N vibration: evidence of coordination bonds between erbium and phen, and erbium and DBM. [12,13] With respect to the FTIR spectrum of ErDP gel, Figure 2 (curve B), the peak at 1080 cm ±1 is attributed to an Si±O±Si symmetric stretching vibration and the band at 452 cm ±1 corresponds to the bending vibration of O±Si±O. [14] It is interesting to see that the stretching vibration frequency of CN in the ErDP gel has a red-shift to 1620 cm ±1 , which may suggest the possible coordination of Er±N.…”

Section: Infrared and Diffuse Reflectance Spectramentioning

confidence: 99%

A New Sol-Gel Material Doped with an Erbium Complex and Its Potential Optical-Amplification Application

et al. 2005

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The crystal structure of a ternary Er(DBM)3phen complex (DBM = dibenzoylmethane; phen = 1,10‐phenanthroline) and its in‐situ synthesis via a sol–gel process are reported. The infrared (IR), diffuse reflectance (DR), and fluorescence spectra of the pure complex and the Er3+/DBM/phen co‐doped luminescent hybrid gel, formed via an in‐situ method (ErDP gel), have been investigated. The results reveal that the erbium complex is successfully synthesized in situ in the ErDP gel. Excitation at the maximum absorption wavelength of the ligands resulted in the typical near‐IR luminescence (centered at around 1.54 μm) resulting from the 4I13/2 → 4I15/2 transition of the Er3+ ion, which contributes to the efficient energy transfer from the ligands to the Er3+ ion in both the Er(DBM)3phen complex and the ErDP gel (an antenna effect). The full width at half maximum (FWHM) centered at 1541 nm in the emission spectrum of the ErDP gel is 72 nm, which has potential for optical‐amplification applications. Further theoretical analysis on the Er3+ ion in the ErDP gel shows that it appears to be a promising candidate for tunable lasers and planar optical amplifiers.

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Synthesis and luminescence property of rare earth complex nanoparticles dispersed within pores of modified mesoporous silica

Cited by 33 publications

References 18 publications

Novel Rare Earth–Polyvinyl Pyridine Complex Functionalized Hybrid Silica Microspheres: Molecular Assembly and Photophysical Property

Novel Rare Earth–Polyvinyl Pyridine Complex Functionalized Hybrid Silica Microspheres: Molecular Assembly and Photophysical Property

NIR-luminescence from ternary lanthanide [HoIII, PrIII and TmIII] complexes with 1-(2-naphthyl)-4,4,4-trifluoro-1,3-butanedionate

A New Sol-Gel Material Doped with an Erbium Complex and Its Potential Optical-Amplification Application

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