Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Fasce, Diana Patricia | - |
| dc.creator | Williams, Roberto Juan Jose | - |
| dc.creator | Erra Balsells, Rosa | - |
| dc.creator | Ishikawa, Yoko | - |
| dc.creator | Nonami, Hiroshi | - |
| dc.date | 2018-02-05T17:16:19Z | - |
| dc.date | 2018-02-05T17:16:19Z | - |
| dc.date | 2001-04-19 | - |
| dc.date | 2018-02-02T19:44:07Z | - |
| dc.date.accessioned | 2019-04-29T15:31:31Z | - |
| dc.date.available | 2019-04-29T15:31:31Z | - |
| dc.date.issued | 2001-04-19 | - |
| dc.identifier | Fasce, Diana Patricia; Williams, Roberto Juan Jose; Erra Balsells, Rosa; Ishikawa, Yoko; Nonami, Hiroshi; One-step synthesis of polyhedral silsesquioxanes bearing bulky substituents: UV-MALDI-TOF and ESI-TOF mass spectrometry characterization of reaction products; American Chemical Society; Macromolecules; 34; 11; 19-4-2001; 3534-3539 | - |
| dc.identifier | 0024-9297 | - |
| dc.identifier | http://hdl.handle.net/11336/35607 | - |
| dc.identifier | CONICET Digital | - |
| dc.identifier | CONICET | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/295749 | - |
| dc.description | The NaOH-catalyzed hydrolytic condensation of the reaction product between N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and phenyl glycidyl ether (PGE) was followed by matrix-assisted ultraviolet laser desorption/ionization time-of-flight mass spectrometry (UV-MALDI-TOF MS) and electrospray ionization time-of-flight mass spectrometry (ESI-TOF MS). After 24 h at 50 °C, main condensation products were a mixture of perfect and imperfect polyhedra: T8, T9(OH), and T10, with traces of T7(OH) and T11(OH). Every one of these products was composed of a series of peaks in the mass spectra, accounting for the incomplete reaction of PGE with the aminosilane (e.g., T8 showed the presence of the species containing 24 PGE units arising from the complete reaction of the initial silane, as well as species containing 23, 22, and 21 PGE units). A thermal treatment to 150 °C led to the appearance of extra peaks corresponding to intramolecular dehydration products. Peaks corresponding to the loss of one water molecule from T9(OH) and T7(OH) were present and could be ascribed to the reaction between SiOH and a secondary OH group. Dehydration products from T8 and T10 were observed, as well as species arising from the loss of two water molecules from T9(OH) and T7(OH). A plausible explanation for the presence of these peaks is the rupture of a Si−O−Si bond in the presence of NaOH, followed by condensation of the resulting fragments with secondary OH groups. | - |
| dc.description | Fil: Fasce, Diana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina | - |
| dc.description | Fil: Williams, Roberto Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina | - |
| dc.description | Fil: Erra Balsells, Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina | - |
| dc.description | Fil: Ishikawa, Yoko. Ehime University; Japón | - |
| dc.description | Fil: Nonami, Hiroshi. Ehime University; Japón | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | American Chemical Society | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/ma001711k | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/ma001711k | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.subject | Polyhedral silsesquioxanes | - |
| dc.subject | Hydrolytic condensation | - |
| dc.subject | UV-MALDI-TOF MS | - |
| dc.subject | Otras Ciencias Químicas | - |
| dc.subject | Ciencias Químicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | One-step synthesis of polyhedral silsesquioxanes bearing bulky substituents: UV-MALDI-TOF and ESI-TOF mass spectrometry characterization of reaction products | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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