Microphase separation of highly amphiphilic, low N polymers by photoinduced copper-mediated polymerization, achieving sub-2 nm domains at half-pitch

Hancox, E. and Liarou, E. and Town, J. S. and Jones, G. R. and Layton, S. A. and Huband, S. and Greenall, M. J. and Topham, P. D. and Haddleton, D. M. (2019) Microphase separation of highly amphiphilic, low N polymers by photoinduced copper-mediated polymerization, achieving sub-2 nm domains at half-pitch. Polymer Chemistry, 10 . pp. 6254-6259. ISSN 1759-9954

Full content URL: http://doi.org/10.1039/c9py01312a

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Microphase separation of highly amphiphilic, low N polymers by photoinduced copper-mediated polymerization, achieving sub-2 nm domains at half-pitch
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Abstract

The lower limit of domain size resolution using microphase separation of short poly(acrylic acid) homopolymers equipped with a short fluorinated tail, posing as an antagonist ‘A block’ in pseudo AB block copolymers has been investigated. An alkyl halide initiator with a fluorocarbon chain was utilized as a first ‘A block’ in the synthesis of low molecular weight polymers (1400–4300 g mol−1) using photoinduced Cu(II)-mediated polymerization allowing for very narrow dispersity. Poly(tert-butyl acrylate) was synthesized and subsequently deprotected to give very low degrees of
polymerization (N), amphiphilic polymers with low dispersity (Đ = 1.06–1.13). By exploiting the high driving force for demixing and the well-defined ‘block’ sizes, we are able to control the nanostructure in terms of domain size (down to 3.4 nm full-pitch) and morphology. This work demonstrates the simple and highly controlled synthesis of polymers to push the boundaries of the smallest achievable domain sizes obtained from polymer self-assembly.

Keywords:polymers, self-assembly, amphiphiles
Subjects:F Physical Sciences > F100 Chemistry
F Physical Sciences > F300 Physics
Divisions:College of Science > School of Mathematics and Physics
ID Code:38991
Deposited On:28 Nov 2019 10:32

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