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Title of the thesis: Zwitterionic polymer-based soft composites in sensing applications

Thesis defender: Ziyue Miao
Opponent: Professor Guang Yang, Huazhong University of Science and Technology, China
Custos: Professor Olli Ikkala, Aalto University School of Science

Zwitterionic polymers are typically composed of repeating units with zwitterionic side chains that contain equal and opposite charges of cationic and anionic groups. They are distinguished by their unique salt-responsive behavior, hydration dynamics, and electrostatic interactions, which make them highly attractive for applications in functional soft materials. Among these polymers, poly[2-(methacryloyloxy)ethyl] dimethyl-(3-sulfopropyl)ammonium hydroxide (PDMAPS) has emerged as a particularly promising candidate due to its excellent biocompatibility, tunable intermolecular interactions, and compatibility with a wide range of functional materials.

This thesis investigates the comprehensive properties and sensing functionalities of PDMAPS-based soft materials, including hydrogels, organohydrogels, and soft composites. By harnessing the inherent characteristics of zwitterionic polymers, we demonstrate how PDMAPS can serve as a versatile soft matrix for applications such as taste sensing, mechano-electromagnetic sensing, shape detection, and information encryption. Our work presents multiple strategies for utilizing PDMAPS in functional soft materials to enable diverse and advanced sensing capabilities.

Keywords: zwitterionic polymer, PDMAPS, functional soft composite, hydrogel, sensor

Thesis available for public display 7 days prior to the defence at .