Related Experiment Video
Updated: Feb 28, 2026
10:16
Fabrication of Anisotropic Polymeric Artificial Antigen Presenting Cells for CD8+ T Cell Activation
Published on: October 12, 2018
8.5K
Charge-Programmable Alternating Copolymers via Self-Catalyzed Aqueous Polymerization for Tunable Bacterial
Xiao Wang1,2, Rui Huang1,2, Jiabo Li1
1Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
JACS Au
|February 27, 2026
Summary
Researchers developed a new aqueous polymerization method using amino acid salts to create sequence-defined, charge-programmable alternating copolymers. This breakthrough enables control over polymer properties for applications in bacterial interaction and immune response modulation.
Area of Science:
- Polymer Chemistry
- Materials Science
- Biomaterials
Background:
- Synthesizing sequence-defined polymers with controlled charge distribution is crucial for mimicking biological macromolecules but remains a significant synthetic challenge.
- Classical amine-epoxy chemistry typically leads to cross-linking, limiting its use for creating precisely structured polymers.
Purpose of the Study:
- To develop a versatile and self-catalyzed aqueous polymerization method for creating sequence-defined, charge-programmable alternating copolymers.
- To establish a platform for designing polymers with predictable biointerfacial behaviors, including bacterial interaction and immunomodulation.
Main Methods:
- Utilized amino acid salts in an aqueous amine-epoxy polymerization system, creating an alkaline microenvironment for controlled polymerization.
- Employed mechanistic studies to understand the kinetics of amine-epoxy reactions and identify key factors for sequence fidelity.
- Synthesized a library of 20 alternating copolymers by varying amino acid salts and diepoxides to achieve different charge profiles and backbone flexibilities.
Main Results:
- Achieved sequence-defined, alternating copolymerization in water, overcoming limitations of traditional methods.
- Demonstrated precise control over polymer charge (cationic, zwitterionic, anionic) and backbone flexibility.
- Showcased programmable biointerfacial functions: cationic polymers anchored bacterial membranes, flexibility influenced translocation rates, and zwitterionic/anionic polymers induced M2 macrophage polarization.
Conclusions:
- Established a unified platform for synthesizing sequence-defined, charge-programmable alternating copolymers in an aqueous environment.
- Connected polymer sequence and charge design to predictable control over bacterial translocation and immunomodulatory functions.
- Opened new avenues for designing advanced biomaterials with tailored biological interactions.
