Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Induced orientational order in long alkyl chain aminosilane molecules by preadsorbed octadecyltrichlorosilane on hydroxylated Si(100)

Harder, P., Bierbaum, K., Wöll, C., Grunze, M., Heid, S., & Effenberger, F. (1997). Induced orientational order in long alkyl chain aminosilane molecules by preadsorbed octadecyltrichlorosilane on hydroxylated Si(100). Langmuir, 13(3), 445-454. doi:10.1021/la9604947.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Dateien

einblenden: Dateien
ausblenden: Dateien
:
Langmuir_13_1997_445.pdf (beliebiger Volltext), 426KB
Name:
Langmuir_13_1997_445.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:
ausblenden:
externe Referenz:
https://pubs.acs.org/doi/pdf/10.1021/la9604947 (beliebiger Volltext)
Beschreibung:
-
OA-Status:
externe Referenz:
https://doi.org/10.1021/la9604947 (beliebiger Volltext)
Beschreibung:
-
OA-Status:

Urheber

einblenden:
ausblenden:
 Urheber:
Harder, P., Autor
Bierbaum, K., Autor
Wöll, Ch., Autor
Grunze, M.1, Autor           
Heid, S., Autor
Effenberger, F., Autor
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: We studied the adsorption of (17-aminoheptadecyl)trimethoxysilane (AHTMS; NH2(CH2)17Si(OCH3)3) onto hydroxylated Si(100) wafers, which were preexposed to methyl-terminated n-octadecyltrichlorosilane (OTS; CH3(CH2)17SiCl3) for various immersion periods, resulting in partial coverages between 42% and 88% of a complete monolayer. Preadsorption of a partial monolayer of OTS was found to drastically improve the molecular alignment of subsequently adsorbed AHTMS. This effect was observed for submonolayer OTS films exhibiting both an island or a homogeneous growth mode, as determined by atomic force microscopy. Without preadsorbed OTS, the adsorption of AHTMS from an aged solution typically resulted in films of multilayer thickness, while the use of fresh solutions of AHTMS resulted in disordered films of submonolayer coverage. We suggest that submonolayer quantities of preadsorbed OTS prevent coagulated aminosilane adsorption and enable oriented adsorption of aminosilane molecules along the domain perimeter of aligned and ordered methyl-terminated silane. In comparison to sequential adsorption, coadsorption of n-octadecyltrimethoxysilane (OTMS; CH3(CH2)17Si(OCH3)3) with AHTMS from a mixture gave films of low quality. The OTS/AHTMS surface that was prepared by sequential adsorption was exposed to pentafluorobenzaldehyde (PFBA) to probe the reactivity and orientation of the AHTMS amino groups. Eighteen to thirty-four percent of the amine groups reacted with no or minor disturbance to the molecular order, compared to 21−44% on pure and disordered AHTMS multilayers. This indicates that the coupling reaction with PFBA in toluene involves only part of the amino groups at the interface.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 1996-10-151996-05-201996-10-151997
 Publikationsstatus: Erschienen
 Seiten: 10
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/la9604947
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Langmuir
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Columbus, OH : American Chemical Society
Seiten: - Band / Heft: 13 (3) Artikelnummer: - Start- / Endseite: 445 - 454 Identifikator: ISSN: 0743-7463
CoNE: https://pure.mpg.de/cone/journals/resource/954925541194