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Titolo:
Direct synthesis of periodic mesoporous organosilicas: Functional incorporation by co-condensation with organosilanes
Autore:
Burleigh, MC; Markowitz, MA; Spector, MS; Gaber, BP;
Indirizzi:
USN, Res Lab, Ctr Biomol Sci & Engn, Lab Mol Interfacial Interact, Washington, DC 20375 USA USN Washington DC USA 20375 nterfacial Interact, Washington, DC 20375 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 41, volume: 105, anno: 2001,
pagine: 9935 - 9942
SICI:
1520-6106(20011018)105:41<9935:DSOPMO>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-SIEVES; ORGANIC GROUPS; CHANNEL WALLS; SILICA; MESOPHASES; PRECURSORS; FRAMEWORKS; CHEMISTRY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Markowitz, MA USN, Res Lab, Ctr Biomol Sci & Engn, Lab Mol Interfacial Interact, Code 6930, Washington, DC 20375 USA USN Code 6930 Washington DC USA 20375 shington, DC 20375 USA
Citazione:
M.C. Burleigh et al., "Direct synthesis of periodic mesoporous organosilicas: Functional incorporation by co-condensation with organosilanes", J PHYS CH B, 105(41), 2001, pp. 9935-9942

Abstract

Mesoscopic organosilicas were synthesized with bis(triethoxysilyl)ethane (BTSE) and cetyltrimethylammonium chloride (CTAC) under basic conditions. Further functionalization was achieved by co-condensation with trialkoxyorganosilanes. Surfactant extraction produced periodic mesoporous organosilicas (PMO's) functionalized with the respective organosilane pendent groups. Organosilanes used in this study include: 3-amino-propyltrimethoxysilane, n-(2-aminoethyl)-3-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 2-(trimethoxysilylethyl)pyridine, n-(3-triethoxysilylpropyl)-4,5-dihydroimidazole, phenethyltrimethoxysilane, and benzyltriethoxysilane. These materials have been characterized by nitrogen gas adsorption, powder X-ray diffraction (XRD), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), elemental analysis (EA), and high-resolution thermogravimetric analysis (TGA). The effect of organosilane incorporation on the porous structure of these materials is examined.

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Documento generato il 20/09/20 alle ore 09:09:54