Bridged Polysilsesquioxanes. Molecular‐Engineering Nanostructured Hybrid Organic‐Inorganic Materials

Shea, K. J.; Moreau, Jean‐Louis; Loy, Douglas A.; Corriu, Robert J. P.; Boury, Bruno

doi:10.1002/3527602372.ch3

Cited by 38 publications

(37 citation statements)

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“…The sol-gel hydrolytic condensation [11][12][13] of suitable organoalkoxysilanes is a convenient method to synthesize solid hybrid materials with targeted properties. [14][15][16] Recently, we have reported [10k] the preparation and the activity as recyclable metathesis catalysts of bridged silsesquioxanes synthesized from a bis-silylated Hoveyda-type monomer via the sol-gel process. This was the first example in the literature for the use of a bis-silylated ligand in a sol-gel process for the preparation of reusable metathesis catalysts.…”

Section: Full Papersmentioning

confidence: 99%

Hybrid Organic‐Inorganic Materials Derived from a Monosilylated Hoveyda‐type Ligand as Recyclable Diene and Enyne Metathesis Catalysts

et al. 2007

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The synthesis of a monosilylated Hoveydatype monomer is described as well as the preparation of several organic-inorganic hybrid materials derived from it by sol-gel processes and by anchoring to commercial silica gel and MCM-41. The resulting materials were treated with first and/or second generation Grubbs catalyst to generate HoveydaGrubbs type alkylidene ruthenium complexes covalently bonded to the silica matrix. These materials are efficient recyclable catalysts for the ring-closing metathesis reaction of dienes and enynes, even for the formation of tri-and tetrasubstituted olefins.

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Section: Full Papersmentioning

confidence: 99%

Hybrid Organic‐Inorganic Materials Derived from a Monosilylated Hoveyda‐type Ligand as Recyclable Diene and Enyne Metathesis Catalysts

et al. 2007

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“…In particular porous materials based on silica are widely exploited nowadays in many fields including adsorption, catalysis, sensors, membranes (Sakka 2005;Shea et al 2004;Collinsona 1999). The wide potentialities of the sol-gel method were demonstrated at the end of the past century by the synthesis of silicas functionalized with the groups capable of complexation (Avnir et al 1998;Feng et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Amorphous and ordered organosilicas functionalized with amine groups as sorbents of platinum (II) ions

et al. 2013

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Two groups of amine-functionalized organosilicas have been synthesized: amorphous polysiloxane xerogels (APX) and ordered mesoporous organosilicas (OMO) by co-condensation of tetraethoxysilane and appropriate alkoxysilanes: aminopropyltriethoxysilane and N-[3-(trimethoxysilyl)propyl]ethylenediamine. The obtained materials were characterized by sorption measurements, X-ray diffractometry, elemental analysis, transmission electron microscopy, and scanning electron microscopy. The OMO samples have well developed porous structure-the values of specific surface area are in the range 740-840 m 2 / g. While the APX samples are less porous having the corresponding values in the range 280-520 m 2 /g. The sizes of the ordered mesopores of OMO are in the range 5.9-6.5 nm while for the APX they are 2.9-12.1 nm indicating structural differences between both groups of the samples. All samples were tested as the sorbents of Pt(II) ions. The influence of various parameters such as pH, contact time, equilibrium concentration on Pt(II) adsorption ability onto prepared adsorbents was studied in detail. Additionally, the effect of chloride concentration on Pt(II) adsorption was investigated. The values of static sorption capacities were in the range of 32-102 mg Pt(II)/ g and 20-139 mg Pt(II)/ g for OMO and APX series, respectively.

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“…[1][2][3][4][5][6][7][8][9][10] Furthermore, the molecularlevel mixing technique doesn't show any significant phase separation; because, the molecularlevel hybridization is based on a microscopically homogeneous mixing and thus the uniform distribution of organic and inorganic moieties in a domain size at the molecular level is provided.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome those limitations of the bulk-scale mixing technique, molecular-level hybridization technique has been actively investigated. [1][2][3][4][5][6][7][8][9][10] This technique results in molecular-level composites, which are their domain sizes in the nanometer scale often create new properties, which would not be expected from those individuals by the loss of individuals' identities after the molecular-level mixing process thereby creating new properties.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10] Usually, hybrid materials mixed at the bulk scales retain the original properties of the individual organic and inorganic components. In other words, their final properties are significantly influenced by the characteristics and their domain sizes of individual components after the mixing process at the bulk scales.…”

Section: Introductionmentioning

confidence: 99%

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Novel Optical Device Materials - Molecular-Level Hybridization

Choi¹

2012

Optical Devices in Communication and Computation

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Bridged Polysilsesquioxanes. Molecular‐Engineering Nanostructured Hybrid Organic‐Inorganic Materials

Cited by 38 publications

References 0 publications

Hybrid Organic‐Inorganic Materials Derived from a Monosilylated Hoveyda‐type Ligand as Recyclable Diene and Enyne Metathesis Catalysts

Hybrid Organic‐Inorganic Materials Derived from a Monosilylated Hoveyda‐type Ligand as Recyclable Diene and Enyne Metathesis Catalysts

Amorphous and ordered organosilicas functionalized with amine groups as sorbents of platinum (II) ions

Novel Optical Device Materials - Molecular-Level Hybridization

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