Interfacial Behavior of a Series of Amphiphilic Block Co-dendrimers

Izabela Bury, Bertrand Donnio, Jean-Louis Gallani,* and Daniel Guillon
Institut de Physique et Chimie des Matriaux de Strasbourg, Groupe des Matriaux Organiques, UMR7504 (CNRS-Universit Louis Pasteur), 23 Rue du Loess, BP43, 67034 Strasbourg Cedex 2, France
Langmuir, 2007, 23 (2), pp 619–625
DOI: 10.1021/la062066z
Publication Date (Web): November 11, 2006
Copyright © 2007 American Chemical Society
*

 Corresponding author e-mail:  gallani@ipcms.u-strasbg.fr.

Abstract

Abstract Image

Amphiphiles with a dendritic structure are attractive materials as they combine the features of dendrimers with the self-assembling properties and interfacial behavior of amphiphiles. We have designed and synthesized three series of segmented amphiphilic block co-dendrimers (Janus-type) and studied their interfacial properties on the Langmuir trough. Various behaviors are observed with, as a rule, the lowest generation dendrimers behaving more or less like traditional amphiphiles while the larger molecules tend to exhibit more complicated isotherms, with a non-straighforward temperature dependence, one particular molecule seemingly forming supramolecular assemblies spontaneously. The results presented here, obtained on a series of molecules where many parameters have been varied systematically, show the limits that should be kept in mind when designing amphiphilic dendrimers.

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History

  • Published In Issue January 16, 2007
  • Received July 17, 2006
    Revised September 20, 2006

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