461585 Sequence Effects in Coacervate-Driven Self-Assembly

Tuesday, November 15, 2016: 5:00 PM
Imperial A (Hilton San Francisco Union Square)
Charles Sing1, Mithun Radhakrishna1 and Tyler Lytle2, (1)Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, (2)University of Illinois at Urbana-Champaign, Urbana, IL

Oppositely-charged polyelectrolytes in aqueous solution can undergo associative phase separation in a process known as 'complex coacervation'. Originally discovered in biopolymers, and used in a variety of food and personal care products, the underlying physical process is now being harnessed for soft material self-assembly. We have used a combination of simulation and theory to demonstrate that structural features at the molecular level have a profound effect on coacervation. Motivated by this observation, we have developed a new hybrid simulation method that couples molecular Monte Carlo and Single Chain in Mean Field simulations to provide the multi-scale picture necessary to study coacervation-driven self-assembly. We demonstrate that this provides predictions that deviate significantly from prior theoretical results, and show that the sequence of charges along the backbone is a useful way to tune and design the self-assembly properties of charged block copolymers. Our investigaion has important implications for how monomer sequence may be used to design the next generation of self-assembled soft materials.

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See more of this Session: Charged and Ion-Containing Polymers
See more of this Group/Topical: Materials Engineering and Sciences Division