Preparation of thin Ureasil films with strong photoluminescence based on incorporated europium–thenoyltrifluoroacetone–bipyridine complexes

A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles

“…These films showed four characteristic emission bands at 590, 615, 650, and 698 nm, corresponding to 5 D 0 → 7 F j (j = 1, 2, 3, 4) emission transitions of Eu 3+ , respectively [23]. These emissions are essentially the same as those reported for the derivatives containing Eu(III) ion, which was due to the energy transfer [39,40].…”

A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles

“…These films showed four characteristic emission bands at 590, 615, 650, and 698 nm, corresponding to 5 D 0 → 7 F j (j = 1, 2, 3, 4) emission transitions of Eu 3+ , respectively [23]. These emissions are essentially the same as those reported for the derivatives containing Eu(III) ion, which was due to the energy transfer [39,40].…”

Lanthanide-Based Luminescent Hybrid Materials

“…Bekiari et al showed that the blue emission of the diureasil was strongly enhanced in the presence of Tb 3+ ions . Highly luminescent diureasils could be obtained by doping lanthanide β-diketonate complexes into the hybrid matrix. − Thin films of diureasils doped with [Eu(tta) 3 (bipy)] exhibited a very strong red photoluminescence comparable to that of the laser dye rhodamine B . Energy transfer to the Eu 3+ ion occurs not only via the coordinated ligands but also via the diureasil matrix.…”

“…[536][537][538][539][540][541][542] Thin films of diureasils doped with [Eu(tta) 3 (bipy)] exhibited a very strong red photoluminescence comparable to that of the laser dye rhodamine B. 540 Energy transfer to the Eu 3+ ion occurs not only via the coordinated ligands but also via the diureasil matrix. An interesting experimental result is the observation of near-infrared luminescence of the diureasils doped with a thulium(III) β-diketonate complex.…”

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

“…The di-urea or di-urethane cross-linked poly(ethylene oxide) (PEO)-siloxane structures (named di-ureasils or urethanesils, respectively) are promising hybrids for the fabrication of large area neutron detectors, 57 as nanocomposite gel electrolytes for dye-sensitized photoeletrochemical cells and as efficient white-light room temperature emitters (quantum yield of 10-20%). [58][59][60][61][62][63][64][65] These materials can be prepared through hydrolysis and condensation of the corresponding organicinorganic hybrid precursors obtained from the reaction of the terminal amine groups of PEO-containing diamines [or the hydroxyl groups of poly(ethylene glycol) for di-urethanesils] with the isocyanate group of 3-isocyanatopropyltriethoxysilane (ICPTES). 56 Alternatively, di-ureasils and di-urethanesils can be produced via acetic acid (AA) or valeric acid solvolysis 57,58 displaying an emission quantum yield 27-35% higher than that calculated for the analogues synthesized via conventional sol-gel techniques.…”

A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles

“…These films showed four characteristic emission bands at 590, 615, 650, and 698 nm, corresponding to 5 D 0 → 7 F j (j = 1, 2, 3, 4) emission transitions of Eu 3+ , respectively [23]. These emissions are essentially the same as those reported for the derivatives containing Eu(III) ion, which was due to the energy transfer [39,40].…”

Lanthanide-Based Luminescent Hybrid Materials

“…Bekiari et al showed that the blue emission of the diureasil was strongly enhanced in the presence of Tb 3+ ions . Highly luminescent diureasils could be obtained by doping lanthanide β-diketonate complexes into the hybrid matrix. − Thin films of diureasils doped with [Eu(tta) 3 (bipy)] exhibited a very strong red photoluminescence comparable to that of the laser dye rhodamine B . Energy transfer to the Eu 3+ ion occurs not only via the coordinated ligands but also via the diureasil matrix.…”

“…[536][537][538][539][540][541][542] Thin films of diureasils doped with [Eu(tta) 3 (bipy)] exhibited a very strong red photoluminescence comparable to that of the laser dye rhodamine B. 540 Energy transfer to the Eu 3+ ion occurs not only via the coordinated ligands but also via the diureasil matrix. An interesting experimental result is the observation of near-infrared luminescence of the diureasils doped with a thulium(III) β-diketonate complex.…”

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

“…The di-urea or di-urethane cross-linked poly(ethylene oxide) (PEO)-siloxane structures (named di-ureasils or urethanesils, respectively) are promising hybrids for the fabrication of large area neutron detectors, 57 as nanocomposite gel electrolytes for dye-sensitized photoeletrochemical cells and as efficient white-light room temperature emitters (quantum yield of 10-20%). [58][59][60][61][62][63][64][65] These materials can be prepared through hydrolysis and condensation of the corresponding organicinorganic hybrid precursors obtained from the reaction of the terminal amine groups of PEO-containing diamines [or the hydroxyl groups of poly(ethylene glycol) for di-urethanesils] with the isocyanate group of 3-isocyanatopropyltriethoxysilane (ICPTES). 56 Alternatively, di-ureasils and di-urethanesils can be produced via acetic acid (AA) or valeric acid solvolysis 57,58 displaying an emission quantum yield 27-35% higher than that calculated for the analogues synthesized via conventional sol-gel techniques.…”

A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles

“…These films showed four characteristic emission bands at 590, 615, 650, and 698 nm, corresponding to 5 D 0 → 7 F j (j = 1, 2, 3, 4) emission transitions of Eu 3+ , respectively [23]. These emissions are essentially the same as those reported for the derivatives containing Eu(III) ion, which was due to the energy transfer [39,40].…”

Lanthanide-Based Luminescent Hybrid Materials

“…Bekiari et al showed that the blue emission of the diureasil was strongly enhanced in the presence of Tb 3+ ions . Highly luminescent diureasils could be obtained by doping lanthanide β-diketonate complexes into the hybrid matrix. − Thin films of diureasils doped with [Eu(tta) 3 (bipy)] exhibited a very strong red photoluminescence comparable to that of the laser dye rhodamine B . Energy transfer to the Eu 3+ ion occurs not only via the coordinated ligands but also via the diureasil matrix.…”

“…[536][537][538][539][540][541][542] Thin films of diureasils doped with [Eu(tta) 3 (bipy)] exhibited a very strong red photoluminescence comparable to that of the laser dye rhodamine B. 540 Energy transfer to the Eu 3+ ion occurs not only via the coordinated ligands but also via the diureasil matrix. An interesting experimental result is the observation of near-infrared luminescence of the diureasils doped with a thulium(III) β-diketonate complex.…”

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

“…The di-urea or di-urethane cross-linked poly(ethylene oxide) (PEO)-siloxane structures (named di-ureasils or urethanesils, respectively) are promising hybrids for the fabrication of large area neutron detectors, 57 as nanocomposite gel electrolytes for dye-sensitized photoeletrochemical cells and as efficient white-light room temperature emitters (quantum yield of 10-20%). [58][59][60][61][62][63][64][65] These materials can be prepared through hydrolysis and condensation of the corresponding organicinorganic hybrid precursors obtained from the reaction of the terminal amine groups of PEO-containing diamines [or the hydroxyl groups of poly(ethylene glycol) for di-urethanesils] with the isocyanate group of 3-isocyanatopropyltriethoxysilane (ICPTES). 56 Alternatively, di-ureasils and di-urethanesils can be produced via acetic acid (AA) or valeric acid solvolysis 57,58 displaying an emission quantum yield 27-35% higher than that calculated for the analogues synthesized via conventional sol-gel techniques.…”