Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Observation of translational diffusion of single terrylenediimide molecules in a mesostructured molecular sieve

Seebacher, C., Hellriegel, C., Deeg, F. W., Bräuchle, C., Altmaier, S., Behrens, P., et al. (2002). Observation of translational diffusion of single terrylenediimide molecules in a mesostructured molecular sieve. Journal of Physical Chemistry B, 106(22), 5591-5595.

Item is

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Seebacher, C., Autor
Hellriegel, C., Autor
Deeg, F. W., Autor
Bräuchle, C., Autor
Altmaier, S., Autor
Behrens, P., Autor
Müllen, Klaus1, Autor           
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: The translational motion of single terrylenediimide (TDI) dye molecules incorporated into the organic part of a surfactant- silica mesostructure of a monolithic M41S host was observed by confocal microscopy. Only isotropic motion was found indicating that the channel-like motion lies below the optical resolution limit of the experiment. An effective diffusion constant was evaluated to be D = 3.72 x 10(-2) mum(2) s(-1). In contrast, for the TDI molecules diffusing in the pure lyotropic hexagonal phase of the same surfactant in water, a one-dimensional anisotropic diffusion with a diffusion constant of D = 2.07 mum(2) s(-1) was measured. The decrease in D and the occurrence of isotropic diffusion on the length scale of the optical experiment on going from the lyotropic phase to the mesostructured host are attributed to an increase in viscosity and tortuosity due to the formation of the silica walls around the template micelles in the synthesis of the M41S material. Apart from the mobile fraction, which shows normal diffusion, a stationary fraction of similar to10% of TDI molecules is observed; however, no intermediate cases were detected.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2002-06-06
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Keine Begutachtung
 Identifikatoren: eDoc: 28344
ISI: 000176049700002
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Journal of Physical Chemistry B
  Alternativer Titel : J. Phys. Chem. B
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 106 (22) Artikelnummer: - Start- / Endseite: 5591 - 5595 Identifikator: ISSN: 1089-5647