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Issue 35, 2019
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Structure, dynamics and phase behavior of short rod inclusions dissolved in a colloidal membrane

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Abstract

Inclusions dissolved in an anisotropic quasi-2D membrane acquire new types of interactions that can drive assembly of complex structures and patterns. We study colloidal membranes composed of a binary mixture of long and short rods, such that the length ratio of the long to short rods is approximately two. At very low volume fractions, short rods dissolve in the membrane of long rods by strongly anchoring to the membrane polymer interface. At higher fractions, the dissolved short rods phase separate from the background membrane, creating a composite structure comprised of bilayer droplets enriched in short rods that coexist with the background monolayer membrane. These results demonstrate that colloidal membranes serve as a versatile platform for assembly of soft materials, while simultaneously providing new insight into universal membrane-mediated interactions.

Graphical abstract: Structure, dynamics and phase behavior of short rod inclusions dissolved in a colloidal membrane

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Publication details

The article was received on 28 May 2019, accepted on 02 Aug 2019 and first published on 05 Aug 2019


Article type: Paper
DOI: 10.1039/C9SM01064E
Soft Matter, 2019,15, 7033-7042

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    Structure, dynamics and phase behavior of short rod inclusions dissolved in a colloidal membrane

    M. Siavashpouri, P. Sharma, J. Fung, M. F. Hagan and Z. Dogic, Soft Matter, 2019, 15, 7033
    DOI: 10.1039/C9SM01064E

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