Journal
MACROMOLECULES
Volume 55, Issue 19, Pages 8795-8807Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.2c01487
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Funding
- Sof t Advanced Materials consortium
- University of Groningen for an FSE Postdoctoral Fellowship
- Dutch Research Council (NWO)
- European Research Council grant (European Union) [864982]
- European Research Council (ERC) [864982] Funding Source: European Research Council (ERC)
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By utilizing Cu(0)RDRP, block copolymers with both strong anionic and charge-neutral segments were synthesized. These copolymers demonstrated self-assembly capabilities in aqueous media, showing potential for various applications.
Despite recent developments in controlled polymerization techniques, the straightforward synthesis of block copolymers that feature both strong anionic and charge-neutral segments remains a difficult endeavor. In particular, solubility issues may arise during the direct synthesis of strong amphiphiles and typical postpolymerization deprotection often requires harsh conditions. To overcome these challenges, we employed Cu(0)mediated reversible deactivation radical polymerization (Cu(0)RDRP) on a hydrophobic isobutoxy-protected 3-sulfopropyl acrylate. Cu(0)-RDRP enables the rapid synthesis of the polymer, reaching high conversions and low dispersities while using a single solvent system and low amounts of copper species. These macromolecules are straightforward to characterize and can subsequently be deprotected in a mild yet highly efficient fashion to expose their strongly charged nature. Furthermore, a protected sulfonate segment could be grown from a variety of charge-neutral macroinitiators to produce, after the use of the same deprotection chemistry, a library of amphiphilic, double-hydrophilic as well as thermoresponsive block copolymers (BCPs). The ability of these various BCPs to self-assemble in aqueous media was further studied by dynamic light scattering, zeta-potential measurements as well as atomic force and electron microscopy.
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