Controlling Complex Coacervation via Random Polyelectrolyte Sequences
| Autor: | Juan J. de Pablo, Matthew Tirrell, Jeffrey M. Ting, Boyuan Yu, Wei Chen, Nicholas E. Jackson, Artem M. Rumyantsev |
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| Rok vydání: | 2022 |
| Předmět: |
Coacervate
Polymers and Plastics Computer science Organic Chemistry Nanotechnology 02 engineering and technology Material Design 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polyelectrolyte 0104 chemical sciences Inorganic Chemistry Materials Chemistry Key (cryptography) Sequence control 0210 nano-technology |
| Zdroj: | ACS macro letters. 8(10) |
| ISSN: | 2161-1653 |
| Popis: | The utilization of chemical sequence control in polymeric materials is key to enabling material design on par with biomacromolecular systems. One important avenue for scalable sequence-controlled polymers leverages the random copolymerization of distinct monomers, with the statistical distribution of the monomeric sequence arising from reaction kinetics following a first-order Markov process. Here we utilize the framework of the random phase approximation (RPA) to develop a theory for the phase behavior of symmetric polyelectrolyte coacervates whose chemical sequences are dictated by simple statistical distributions. We find that a high charge "blockiness" within the random sequences favors the formation of denser and more salt-resistant coacervates while simultaneously increasing the width of the two-phase region. We trace these physical effects to the increased cooperativity of Coulomb interactions that results from increased charge blockiness in oppositely charged polyelectrolytes. |
| Databáze: | OpenAIRE |
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