Journal
SOFT MATTER
Volume 9, Issue 25, Pages 5966-5974Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sm50159k
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Funding
- Dutch Polymer Institute (DPI, technology area High-throughput experimentation (HTE))
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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.
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