Session J43: Physics of Copolymers II
11:15 AM–2:15 PM, Tuesday, March 22, 2011
Room: A306/307
Sponsoring Unit:
DPOLY
Chair: Bradley Olsen, Massachusetts Institute of Technology
Abstract ID: BAPS.2011.MAR.J43.12
Abstract: J43.00012 : Disorder-to-Order Transition Induced by Alkyne/Azide Click Chemistry in Diblock Copolymer Thin Films
1:27 PM–1:39 PM
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Abstract 
Authors:
Xinyu Wei
(Department of Polymer Science and Engineering, University of Massachusetts Amherst)
Wei Chen
(Center for Nanoscale Materials, Argonne National Laboratory)
Joseph Strzalka
(Advanced Photon Source, Argonne National Laboratory)
Thomas Russell
(Department of Polymer Science and Engineering, University of Massachusetts Amherst)
The thin film morphology of binary blends of poly(ethylene oxide)-\textit{block}-poly(n-butyl methacrylate-\textit{random}-propargyl methacrylate) (PEO-$b$-P(nBMA-$r$-PgMA)) diblock copolymer and Rhodamine B azide was investigated. During thermal annealing, the click reaction between the alkyne-bearing diblock copolymer and the azide lead to a significant increase in non-favorable segmental interaction and thus microphase separation of the block copolymer. Different morphologies were realized by controlling block copolymer composition and the mole ratio between the alkyne and azide groups. The effects of film thickness and annealing temperature on microdomain orientation and lateral ordering were also revealed. Our studies suggest a promising approach to fabricate nanostructured materials with long-range lateral ordering.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.J43.12