Stark, B. ; Lach, C. ; Farago, B. ; Frey, H. ; Schlenk, C. ; Stühn, B. (2003)
Form fluctuations of carbosilane dendrimers in dilute solution: a study using neutron spin echo spectroscopy.
In: Colloid and Polymer Science, 281 (7)
doi: 10.1007/s00396-002-0812-y
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A series of carbosilane dendrimers with perfluorinated end groups has been prepared. The structure of these molecules in dilute solution is studied using small angle neutron scattering. For generations g<3 we find a non-spherical shape of the particles and a tendency for aggregation. This result is supported by the analysis of the diffusion coefficient obtained from photon correlation spectroscopy. The overall shape of the molecules is that of a core-shell particle. The generation 4 molecule is obtained as a compact sphere. Neutron spin echo spectroscopy reveals a relaxation time which is attributed to the form fluctuations of this particle.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2003 |
| Autor(en): | Stark, B. ; Lach, C. ; Farago, B. ; Frey, H. ; Schlenk, C. ; Stühn, B. |
| Art des Eintrags: | Bibliographie |
| Titel: | Form fluctuations of carbosilane dendrimers in dilute solution: a study using neutron spin echo spectroscopy |
| Sprache: | Englisch |
| Publikationsjahr: | Juli 2003 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Colloid and Polymer Science |
| Jahrgang/Volume einer Zeitschrift: | 281 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1007/s00396-002-0812-y |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | A series of carbosilane dendrimers with perfluorinated end groups has been prepared. The structure of these molecules in dilute solution is studied using small angle neutron scattering. For generations g<3 we find a non-spherical shape of the particles and a tendency for aggregation. This result is supported by the analysis of the diffusion coefficient obtained from photon correlation spectroscopy. The overall shape of the molecules is that of a core-shell particle. The generation 4 molecule is obtained as a compact sphere. Neutron spin echo spectroscopy reveals a relaxation time which is attributed to the form fluctuations of this particle. |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) 05 Fachbereich Physik |
| Hinterlegungsdatum: | 27 Feb 2010 13:23 |
| Letzte Änderung: | 05 Mär 2013 09:32 |
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