Infrared spectra-structure correlations for organosilicon compounds

Smith, Alastair

doi:10.1016/0371-1951(60)80074-4

Cited by 449 publications

(214 citation statements)

References 94 publications

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“…These bands became stronger with increasing partial pressure of TMSAZ. Absorption bands at 1254 and 854 cm' were assigned to C-H deformation and methyl rocking vibrations of trimethylsilyl group, respectively, while the bands at 1080 cm' and 755 cm"' were assigned to Si-0 stretching and C-0 stretching vibrations in Si-0-CH2-group [17][18][19]. Through the photolysis of the azide group, TMSAZ can produce 1-(dimethylsilyl)methanimine [7,8].…”

Section: Methodsmentioning

confidence: 99%

Chemical Reactivity of Trimethylsilyl Azide in Gas Phase Synthesis of Ultrafine Particles from Acrolein.

Morita

Imura

Sano

2002

J. Photopol. Sci. Technol.

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Under UV light irradiation at 313 nm, a gaseous mixture of trimethylsilyl azide (TMSAZ) and acrolein (AC) produced sedimentary aerosol particles with a mean diameter of 0.74 µm. From the chemical analysis of the product by FT IR spectroscopy, TMSAZ was found to be incorporated into the sedimentary particles of polyacrolein by forming Si-0 bond. Gas-phase chemical reaction between TMSAZ and AC was observed in the dark, and was investigated from the analysis of volatile products by GC/MS and FT IR spectra; as a final product, hexamethyldisiloxane was identified. High chemical reactivity of TMSAZ towards AC was applied to modify the surface character of polyacrolein particles.

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Section: Methodsmentioning

confidence: 99%

Chemical Reactivity of Trimethylsilyl Azide in Gas Phase Synthesis of Ultrafine Particles from Acrolein.

Morita

Imura

Sano

2002

J. Photopol. Sci. Technol.

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“…4 C-NMR measurements, respectively. It was assured that the addition of chromium acetylacetonate had no effect on the spectrum 11 and that the recycle times of 6 s for 29 Si and 10 s for 13 C were long enough for the quantitative analysis. The chemical shifts (␦, ppm) of 29 Si and 13 C relative to tetramethylsilane (␦ = 0 ppm) were determined by using peaks at 1.534 ppm for (CH 3 ) 3 Si(CH 2 ) 3 SO 3 Na and at 176.46 ppm for the carboxyl carbon in glycine as respective external references.…”

Section: Analysis Of Surface Structure and Teos Solutionmentioning

confidence: 99%

Apatite formation on ethylene-vinyl alcohol copolymer modified with silanol groups

Oyane¹,

Minoda²,

Miyamoto³

et al. 1999

J. Biomed. Mater. Res.

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The surfaces of ethylene-vinyl alcohol copolymer (EVOH) substrates were modified with silanol (Si-OH) groups, and their apatite forming ability was examined in a simulated body fluid (SBF) with ion concentrations nearly equal to those of human blood plasma or in a solution with ion concentrations 1.5 times those of SBF (1.5SBF). The surface modification of EVOH was carried out by reacting 3-isocyanatopropyltriethoxysilane, followed by hydrolysis of the ethoxysilyl groups into Si-OH groups. However, no apatite formation was observed on the EVOH substrate thus modified, even after 3 weeks in SBF and 1.5SBF. The Si-OH modified EVOH substrate was further modified by hydrolysis and polycondensation of tetraethyoxysilane (TEOS). It was found that the apatite forms on the TEOS-modified substrate within 3 weeks in 1.5SBF. These results suggest that the presence of a large amount of Si-OH groups (i.e., a cluster of Si-OH groups) on the substrate is prerequisite to apatite formation in the body environment. Apatite-EVOH composites prepared by this process might be useful as hard tissues substitutes.

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“…1) showed four characteristic absorption bands at 3420, 1625, 1100, and 800cm-'. While the very strong absorption band at 1100 cm-' is due (17) to the asymmetric stretching vibrations of the Si-0-Si moiety, the weak absorption band at 800 cm-I is due (18) to the Si-0-Si bending mode and the weak absorption at 1625 cm-I is due (19) to the in-plane deformation of the -OH group. The band at 3420 cm-' has been attributed (20) to -OH stretching vibration of molecular water.…”

Section: Resultsmentioning

confidence: 98%

On the role of partition and surface reactions in the adsorption of binary liquid mixtures on silica gel

Singh¹,

Sharma²

1988

Can. J. Chem.

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The adsorption behaviour of benzene (A), toluene (A), p-xylene (A), and o-xylene (A) in their binary mixtures with o-chlorotoluene (B) on silica gel has been studied at 308.15 K. The data have been analysed in terms of a model that assumes that partition and surface reactions play an important role in the adsorption process, and have revealed that while both partition and surface reactions dictate the adsorption (U-shaped isotherms) of o-chlorotoluene (OCTE) (B) from benzene (A) or toluene (A) + OCTE (B) mixtures, the adsorption of A and B entities of p-xylene (A) or o-xylene (A) + OCTE (B) mixtures (S-shaped isotherms) onto the silica gel surface is governed primarily by the distribution process and secondarily by the surface reaction.

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Infrared spectra-structure correlations for organosilicon compounds

Cited by 449 publications

References 94 publications

Chemical Reactivity of Trimethylsilyl Azide in Gas Phase Synthesis of Ultrafine Particles from Acrolein.

Chemical Reactivity of Trimethylsilyl Azide in Gas Phase Synthesis of Ultrafine Particles from Acrolein.

Apatite formation on ethylene-vinyl alcohol copolymer modified with silanol groups

On the role of partition and surface reactions in the adsorption of binary liquid mixtures on silica gel

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