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Issue 25, 2013
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Tuning the morphology of triblock terpoly(2-oxazoline)s containing a 2-phenyl-2-oxazoline block with varying fluorine content†

Ulrich Mansfeld,ab   Stephanie Hoeppener,*ac   Kristian Kempe,ab   Jean-Marc Schumers,d   Jean-François Gohyd  and  Ulrich S. Schubertabc  
Author affiliations

* Corresponding authors

a Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
E-mail: s.hoeppener@uni-jena.de
Fax: +49 3641 948202
Tel: +49 3641 948261

b Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands

c Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany

d Bio and Soft Matter (BSMA), Institute of Condensed Matter and Nanoscience (IMCN), Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium

Abstract

The formation of nanostructures in triblock terpolymers consisting of poly[2-ethyl-2-oxazoline-block-2-(1-ethylpentyl)-2-oxazoline-block-2-(Xfluorophenyl)-2-oxazoline] (X = di, tri, tetra and penta) was investigated in water. For this purpose a gradually increasing degree of fluorination was introduced in the molecular structures and its influence on the self-assembly was studied. It can be demonstrated that the basic form of aggregation of these systems resembles rod-like micelles, which tend, upon introduction of fluorinated blocks, to aggregate first into 2-dimensional and later into 3-dimensional super-aggregates. In the case of di- and pentafluorinated terpolymers well-defined structures were observed, which represent likely intermediate, stable transient structures formed during an assumed rod-to-vesicle transition. DLS and cryo-TEM were utilized to analyze the structural features of these nanostructures and a model for their further assembly into super-structures was developed.

Graphical abstract: Tuning the morphology of triblock terpoly(2-oxazoline)s containing a 2-phenyl-2-oxazoline block with varying fluorine content

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Article information

https://doi.org/10.1039/C3SM50159K
Submitted
14 Jan 2013
Accepted
11 Apr 2013
First published
22 May 2013
Soft Matter, 2013,9, 5966-5974
Article type
Paper
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Tuning the morphology of triblock terpoly(2-oxazoline)s containing a 2-phenyl-2-oxazoline block with varying fluorine content

U. Mansfeld, S. Hoeppener, K. Kempe, J. Schumers, J. Gohy and U. S. Schubert, Soft Matter, 2013, 9, 5966
DOI: 10.1039/C3SM50159K

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