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Ordering Transitions of Semifluorinated Diblock Copolymers

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Abstract:

A series of diblock copolymers consisting of a hydrophilic polyethylene oxide (PEO) and a hydrophobic poly(1H,1H-dihydroperfluorooctyl methacrylate) (PDHFOMA) block were synthesized with different chain lengths for application to self-assembled nanopatterning structures. The morphology of poly(DHFOMA5k-b-EO5k), poly(DHFOMA10k-b-EO10k), and poly(DHFOMA20k-b-EO20k) spin cast from micellar solution in chloroform at room temperature were spherical with average diameter of 12 nm, 17 nm and 26 nm, respectively by TEM analysis. The spherical structures were reorganized to different shapes with thermodynamically stable morphologies upon annealing above glass transition temperature (Tg). PDHFOMA block domains changed to well ordered cylindrical domains, inversed continuous phase, and large composite spherical domains for 5 k, 10 k, and 20 k block copolymer, respectively.

Keywords: BLOCK COPOLYMER; SELF-ASSEMBLED SYSTEM

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.IC51

Publication date: September 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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