Dynamic studies of Ormosil membranes

Maver, Ksenija; Štangar, Urška Lavrenčić; Judeinstein, Patrick; Zanotti, Jean-Marc

doi:10.1016/j.jnoncrysol.2007.08.087

Cited by 16 publications

(7 citation statements)

References 28 publications

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“…Ormosil materials represent an important area of research in materials science, as they have already been found to have many promising applications in the fields of optics, electronics, ionics, mechanics, energy, environment, biology, and medicine 1–3. Such versatility arises from combining the benefits and desirable properties of both constituents, inorganic (e.g., mechanical and thermal stability) and organic (e.g., flexibility and functionality) 4. Ormosils have been shown to be excellent hosts for trapping nanoparticles of metals and semiconductors because of their ability to act as stabilizers or surface capping agents 5–8.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Such versatility arises from combining the benefits and desirable properties of both constituents, inorganic (e.g., mechanical and thermal stability) and organic (e.g., flexibility and functionality). 4 Ormosils have been shown to be excellent hosts for trapping nanoparticles of metals and semiconductors because of their ability to act as stabilizers or surface capping agents. [5][6][7][8] When nanoparticles are embedded or encapsulated in an Ormosil, the Ormosil terminates the growth of the particles by controlling nucleation.…”

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confidence: 99%

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Preparation and characterization of Ag‐deposited aminosilane‐modified silicate by chemical reduction method

Wu¹,

Chang²,

Min³

et al. 2011

J Polym Sci B Polym Phys

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Nanocomposites based on silver (Ag) and organically modified silicate (Ormosil) were prepared by an in situ reduction method, in which silver nitrate, tetraethoxysilane and N-[3-(trimethoxysilyl)propyl]diethylenetriamine (ATS) acted as precursor, linker, and colloidal suspension stabilizer, respectively. The objective of the study was to produce silver nanoparticles through AgNO 3 chemical reduction in a continuous media, in which aminosilanes act as superficial modifiers of Ag nanoparticles, inhibiting their growth and preventing aggregation. The physical properties of the Ormosil/Ag composites were examined using NMR, electron spin resonance, scanning electron microscope, transmission electron microscope, and thermal gravimetric analysis spectroscopy, the results of which indicated that Ag was incorporated in the Ormosil matrix after impregnation. The Ag content and surface morphology of the Ormosil/Ag composites depended on the initial concentration of AgNO 3 . The antibacterial effects of the Ormosil/Ag composites were assessed by the zone of inhibition and plate-counting methods, and an excellent antibacterial performance was

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Preparation and characterization of Ag‐deposited aminosilane‐modified silicate by chemical reduction method

Wu¹,

Chang²,

Min³

et al. 2011

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

show abstract

“…Ormosil materials represent an important area of research in materials science, as they have already been found to have many promising applications in the fields of optics, electronics, ionics, mechanics, energy, environment, biology and medicine [1e3]. Such versatility arises from combining the benefits and desirable properties of both constituents, inorganic (e.g., mechanical and thermal stability) and organic (e.g., flexibility and functionality) [4]. Ormosils have been shown to be excellent hosts for trapping nanoparticles of metals and semiconductors [5e8] because of their ability to act as stabilizers or surface capping agents.…”

Section: Introductionmentioning

confidence: 99%

“…Si(OSi) 2 (OH) 2 , Si(OSi) 3 (OH) and Si (OSi)4 , respectively. Moreover, the structural characterization of the XRD spectra of (a) Ormosil(AES)/Ag and (b) Ormosil(ATS)/Ag nanocomposite.…”

mentioning

confidence: 99%

Effect of amine groups on the synthesis and antibacterial performance of Ag nanoparticles dispersed in aminosilanes-modified silicate

Chang

Tsai

et al. 2010

Polymer Degradation and Stability

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“…In particular, Ormosils (organically modified silicon) (R xSi(OR)4-x) synthesised by the sol-gel process [1] have been widely studied for the preparation of hybrid organicinorganic materials for different applications such as separation [2,3], sensing [4,5], surface protection [6,7], and optics [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Characterisation of an Erbium/Ytterbium Doped Hybrid Material Developed via a Nonhydrolytic Sol-Gel Route

Oubaha

Copperwhite

McDonagh

et al. 2010

SRX Materials Science

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This paper proposes the development and structural characterisation of an Er 3+ /Yb 3+ doped hybrid organic-inorganic material synthesised by a nonhydrolytic sol-gel process. By using a pumping laser diode at 980 nm, a typical Er 3+ luminescence has been recorded in the near infrared region (1.53-1.55 μm). However, the detected fluorescence was particularly weak compared to that generally observed in pure mineral materials, suggesting the occurrence of strong quenching due to multiphonon relaxation processes. To understand this behaviour, structural characterisation of both of the matrix and the local environment of Er 3+ ions were conducted employing infrared spectroscopy, nuclear magnetic resonance, electron paramagnetic resonance, and neutron scattering. These studies showed that the major phenomenon competing with the Er 3+ fluorescence is intimately associated to the strong vibrational modes of the organic species that involve multiphonon relaxation processes, resulting in energy dissipation within the host matrix.

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Dynamic studies of Ormosil membranes

Cited by 16 publications

References 28 publications

Preparation and characterization of Ag‐deposited aminosilane‐modified silicate by chemical reduction method

Preparation and characterization of Ag‐deposited aminosilane‐modified silicate by chemical reduction method

Effect of amine groups on the synthesis and antibacterial performance of Ag nanoparticles dispersed in aminosilanes-modified silicate

Structural and Optical Characterisation of an Erbium/Ytterbium Doped Hybrid Material Developed via a Nonhydrolytic Sol-Gel Route

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