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

Hancox, E., Liarou, E., Town, J. S. , Jones, G. R., Layton, S. A., Huband, S., Greenall, M. J., 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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