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PS-b-P4VP(PDP) comb-shaped supramolecules: nanorods and thin films for nanotemplating

13 March 2009

PhD ceremony: mw. W. van Zoelen, 16.15 uur, Academiegebouw, Broerstraat 5, Groningen

Thesis: PS-b-P4VP(PDP) comb-shaped supramolecules: nanorods and thin films for nanotemplating

Promotor(s): prof. G. ten Brinke

Faculty: Mathematics and Natural Sciences

 

A polymer is a long chain molecule, created by linking together smaller molecules, much like preparing a necklace from single beads. Since the introduction of bakelite in 1909, a variety of synthetic polymers has been developed. Although these polymers may have diverging properties, most of them have one thing in common: just like water and oil they do not mix. Polymer chemists take advantage of this property by linking different polymer chains together. This can be compared with tying the tail of a cat to that of a dog. Both animals want to get as far away from each other as possible, but can’t get any further than their body lengths. A polymer chain is not longer than several tens of nanometers (one nanometer = one billionth of a meter), and that is why a collection of these so called block copolymers can separate from each other in very small ordered structures. These structures can for example be used as templates to create nanostructures of inorganic materials, which can find use in computer memory applications. Because the obtained structures are much smaller than those available with current techniques, this could result in even faster computers with more memory capacity.

In this thesis, a block copolymer of polystyrene (PS) and poly(4-vinyl pyridine) (P4VP) is combined with smaller chain like pentadecylphenol (PDP) molecules to form so-called comb-shaped supramolecules, resulting in new ordered structures. Amongst other things, it is investigated how the obtained structures can serve as a template to create novel nanomaterials.

 

Last modified:15 September 2017 3.38 p.m.
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