Organosilicon Sorbents for Lanthanides

Pozhidaev, Yu. N.; Panezhda, E. V.; Grigor’eva, O. Yu.; Kirillov, A. I.; Belousova, L. I.; Власова, Н. Н.; Воронков, М. Г.

doi:10.1023/b:doch.0000010331.27662.23

Cited by 11 publications

(8 citation statements)

References 3 publications

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“…Of particular interest would be the use of these materials as sorbents of metal ions from aqueous and nonaqueous solutions [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and CuX2 and CoX2 (X=Cl−, Br−, ClO−4) adsorption behavior of a polyhedral oligomer silsesquioxane functionalized with an organic base

Filho¹,

Marangoni²,

Costa³

2007

Journal of Colloid and Interface Science

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“…Of particular interest would be the use of these materials as sorbents of metal ions from aqueous and nonaqueous solutions [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and CuX2 and CoX2 (X=Cl−, Br−, ClO−4) adsorption behavior of a polyhedral oligomer silsesquioxane functionalized with an organic base

Filho¹,

Marangoni²,

Costa³

2007

Journal of Colloid and Interface Science

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“…The derivatives with partially or completely fluori nated ligands should be most compatible with the fluori nated matrices. The solubility of the complexes was tested for europium(III) (7) and erbium(III) benzoyltrifluoro acetonates (8), praseodymium(III) hexafluoroacetyl acetonate (9), and erbium(III) (10) and samarium(III) perfluorononanoates (11). The two latter were obtained from erbium(III) carbonate and samarium(III) oxide by the reaction with heptafluorononanoic acid.…”

Section: Methodsmentioning

confidence: 99%

Carbofunctional fluorine-containing triethoxysilanes: synthesis, film forming and properties

Ladilina¹,

Семенов²,

Kurskii³

et al. 2005

Russ Chem Bull

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Novel fluorine containing carbofunctional organosilicon monomers were synthesized: 3 pentafluorobenzylideneaminopropylethoxysilane (EtO) 3 Si(CH 2 ) 3 N=CH-C 6 F 5 , N 3 methoxydiethoxysilylpropyltrifluoroacetamide (EtO) 2 (MeO)Si(CH 2 ) 3 NHC(O)CF 3 , and 1,1,5 trihydrooctafluoroamyl N 3 triethoxysilylpropylaminopropanoate (EtO) 3 Si(CH 2 ) 3 NH(CH 2 ) 2 C(O)OCH 2 (CF 2 ) 3 CHF 2 . Compositions for the formation of trans parent thermally stable films were prepared from these monomers. The films have low absor bance intensity near 1550 nm, i.e., in the region of photosignal transmission of modern optical communication systems. The compositions can dissolve complexes with organofluorine ligands and produce transparent homogeneous films doped with rare earth metals. The concentrations of the complexes in the matrices are 3.7-21.4 wt.% (metal concentrations are 0.6-3.7%). Fluorescence and fluorescence excitation spectra of the matrices and electronic absorption spectra of the doped films were studied. Key words: 3 pentafluorobenzylideneaminopropyltriethoxysilane, N 3 methoxydiethoxy silylpropyltrifluoroacetamide, 1,1,5 trihydrooctafluoroamyl N 3 triethoxysilylpropylamino propanoate, rare earth metal complexes with fluorinated ligands, film preparation, near IR spectroscopy, electronic absorption spectroscopy, fluorescence.Adsorbents, heterogeneous catalysts, 1-7 aerogels, 8 cat ion exchange resins, 9 and materials for photonics and laser optics 10 can be obtained from silicon alkoxides con taining a functional organic substituent (RO) 3 Si(CH 2 ) n Z. Methods of sol-gel chemistry make it possible to intro duce organic dye molecules and transition, rare earth, and platinum metal cations into a hybrid organo inor ganic matrix. For instance, the sorption of rare earth element (REE) cations by xerogels of functionalized organosilsesquioxanes O 1.5 Si(CH 2 ) 3 -Z-(CH 2 ) 3 SiO 1.5 (Z = NHC(O)C 6 H 4 C(O)NH, NHC(O)CH 2 C(O)NH, NHS(O)NH, and NHS(O 2 )NH) has recently 11 been stud ied. Xerogels prepared by 3 acrylamidopropyltriethoxy silane hydrolysis were used as complexing agents for the uranyl cation. 12 Highly porous aerogels SiO 2 • •O 1.5 Si(CH 2 ) 3 Z (Z = SH, OC(O)C(Me)=CH 2 , NCO, and NHC(O)OMe) were synthesized 13 by the co hydroly sis of Si(OMe) 4 and (MeO) 3 Si(CH 2 ) 3 Z followed by dry ing under supercritical conditions. REE complexes can also be incorporated into inorganic materials. For in stance, erbium β diketonates were incorporated into nanoporous glasses by supercritical impregnation. 14 Organo inorganic glasses doped with Eu 2+ /Eu 3+ cations were obtained from a mixture of methyldiethoxysilane, methyltriethoxysilane, and tetrapropoxyzirconium or from a mixture of tetraethoxysilane, tin alkoxide, and titanium in the presence of europium chloride. 15,16 The prepara tion process is accompanied by the partial reduction of Eu 3+ to Eu 2+ . REE cations can also be incorporated into organic polymers. For instances, the lanthanide contain ing organic polymers were prepared by the polymeriza tion of the neodym...

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“…Despite that there are only a few papers in the literature describing the potential use of polysilsesquioxane adsorbents. They were extensively probed as adsorbents of different metal from aqueous solutions [9][10][11][12], phenols [13] or DDT [14] but to our best knowledge there have been no attempts to probe these materials as adsorbent of organic compounds from the gas phase. Here, we describe a synthesis of mesoporous polysilsesquioxane xerogels and their application as sorbent materials for the uptake of selected organic compounds from the gas phase.…”

Section: Introductionmentioning

confidence: 99%

Ethylene and phenylene bridged polysilsesquioxanes functionalized by amine and thiol groups as adsorbents of volatile organic compounds

Dąbrowski

Barczak

Robens

et al. 2007

Applied Surface Science

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Organosilicon Sorbents for Lanthanides

Cited by 11 publications

References 3 publications

Preparation, characterization, and CuX2 and CoX2 (X=Cl−, Br−, ClO−4) adsorption behavior of a polyhedral oligomer silsesquioxane functionalized with an organic base

Preparation, characterization, and CuX2 and CoX2 (X=Cl−, Br−, ClO−4) adsorption behavior of a polyhedral oligomer silsesquioxane functionalized with an organic base

Carbofunctional fluorine-containing triethoxysilanes: synthesis, film forming and properties

Ethylene and phenylene bridged polysilsesquioxanes functionalized by amine and thiol groups as adsorbents of volatile organic compounds

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