Colloidal nano/micron-sized particles received great interest because the demand for these potentially uniform particles has increased in special applications such as photonic crystal, toners, surface coating, catalysis, chromatography, and immobilization systems. We have recently developed zwitterionic (halophilic, salt-loving) polymers that are attractive and possess excellent properties such as electrostatic, hydrogen bonding, dipole, etc., making them interesting novel functional materials.<br/><br/>Functionalized monodispersed colloid particles were synthesized by combining zwitterionic (betaine) monomers through heterogeneous polymerization. In this work, we demonstrate stimuli-responsive colloidal particles and self-assembly behavior. The monodisperse non-spherical colloids were empolyed to fabricate photonic crystals through a bottom-up self assembly process, which faciliates Bragg diffraction, leading to tunable iridescent polymer opal thus producing novel responsive photonic materials.

Multi-responsive zwitterion functionalized colloidal particles and their applications

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ACS Fall 2022

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