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Issue 31, 2019
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Co-assembly of Janus nanoparticles in block copolymer systems

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Abstract

Block copolymer are ideal matrices to control the localisation of colloids. Furthermore, anisotropic nanoparticles such as Janus nanoparticles possess an additional orientational degree of freedom that can play a crucial role in the formation of highly ordered materials made of block copolymers. This work presents a mesoscopic simulation method to assert the co-assembly of Janus nanoparticles in a block copolymer mixture, finding numerous instances of aggregation and formation of ordered configurations. Comparison with chemically homogeneous neutral nanoparticles shows that Janus nanoparticles are less prone to induce bridging along lamellar domains, thus being a less destructive way to segregate nanoparticles at interfaces. The combination of asymmetric block copolymer and asymmetric Janus nanoparticles can result in assembly of colloids with an even number of layers within the minority domain.

Graphical abstract: Co-assembly of Janus nanoparticles in block copolymer systems

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Publication details

The article was received on 27 May 2019, accepted on 26 Jun 2019 and first published on 10 Jul 2019


Article type: Paper
DOI: 10.1039/C9SM01062A
Soft Matter, 2019,15, 6400-6410

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    Co-assembly of Janus nanoparticles in block copolymer systems

    J. Diaz, M. Pinna, A. Zvelindovsky and I. Pagonabarraga, Soft Matter, 2019, 15, 6400
    DOI: 10.1039/C9SM01062A

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