Optical properties of Pr3+ doped silica gel glasses obtained by sol–gel method

Stręk, W.; Legendziewicz, J.; Łukowiak, E.; Maruszewski, K.; Sokolnicki, J.; Бойко, А. А.; Borzechowska, M.

doi:10.1016/s1386-1425(98)00140-1

Cited by 22 publications

(20 citation statements)

References 8 publications

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“…Relative intensity ratio of both mentioned transitions is changing in the solutions containing ethylene glycol, where their intensities are comparable. Analysis of the absorption spectra of solutions and solid state points at broadening bands especially in the region of 3 (Fig. 5A).…”

Section: Optical Spectroscopy Of Praseodymium Compoundsmentioning

confidence: 98%

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Application of spectroscopy and positron annihilation methods in studies of the gel-glasses materials

Legendziewicz

Guzik

Gliński

et al. 2008

Journal of Alloys and Compounds

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Section: Optical Spectroscopy Of Praseodymium Compoundsmentioning

confidence: 98%

“…They showed the influence of the structure of precursors on the optical behaviour and other properties of the non-structural ceramics [3][4][5][6]. Formation of dimeric units can lead to very interesting pair effects, which would be valuable application.…”

Section: Introductionmentioning

confidence: 99%

Application of spectroscopy and positron annihilation methods in studies of the gel-glasses materials

Legendziewicz

Guzik

Gliński

et al. 2008

Journal of Alloys and Compounds

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“…[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. [32][33][34][35][36][37][38][39] In our previous work, we used 5-amino-1,10-phenanthroline as a starting compound to attach a lanthanide complex to the 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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“…71,72 To solve this problem, Lenaerts et al, 73 have proved that a 2-substituted imidazo[4,5-f]-1,10-phenanthroline is an easily accessible, stable, and versatile building block for covalent attachment of lanthanide b-diketonate complexes to a hybrid matrix. Bulk samples and thin films were prepared with Ln(III) 2-thenoyltrifluoroacetonate complexes (Ln = Pr, Nd, Sm, Eu, Dy, Ho, Er, Tm, Yb) grafted via the imidazo-[4,5-f]-1,10-phenanthroline moiety to the silica hybrid matrix.…”

mentioning

confidence: 99%

Photonic and nanobiophotonic properties of luminescent lanthanide-doped hybrid organic–inorganic materials

et al. 2008

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Research into lanthanide-doped organic-inorganic hybrid materials emerged in the 1990s with the development of interesting materials for optics: high efficiency and stable solid-state lasers, new fiber amplifiers and sensors, devices with upconversion, fast photochromic and non-linear responses, etc. Their interest relies on the possibility of combining properties of sol-gel host materials (shaping, tunable refractive index and mechanical properties, corrosion protection, specific adhesion, etc.) and the well-known luminescence of lanthanide ions (Ln). The fast development of photonic hybrids allowed the commercial exploitation of products with new or enhanced characteristics (megajoule pulsed Nd-YAG laser, protective coatings of glasses, screens or glasswares). However, recently, Ln-hybrid nanocomposites have found new applications in bio-sensors, bio-analytics and even clinical imaging diagnostics. These applications make use of the fluorescence properties of lanthanides that make luminescent hybrids ideal candidates for time-resolved fluoroimmunoassays, DNA hybridation assays, fluorescence imaging microscopy, or in vivo imaging. As a consequence, the goal of this review is twofold: (i) as a reminder of some general considerations that must be taken into account to design new optically active Ln-doped nanocomposites whatever the application field, and (ii) to show the most important advances achieved in the past years in different areas, paying special attention to bio-medical applications.

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Optical properties of Pr3+ doped silica gel glasses obtained by sol–gel method

Cited by 22 publications

References 8 publications

Application of spectroscopy and positron annihilation methods in studies of the gel-glasses materials

Application of spectroscopy and positron annihilation methods in studies of the gel-glasses materials

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

Photonic and nanobiophotonic properties of luminescent lanthanide-doped hybrid organic–inorganic materials

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