Light-driven sequential shape transformation of block copolymer particles through three-dimensional confined self-assembly
Dengwen Hu, Yaping Wang, Jin‐Tao Liu, Yanya Mao, Xiaohua Chang, Yutian Zhu
Abstract
isomerization of an azo group under UV light, the interfacial interactions between the BCPs and the surrounding aqueous phase are significantly varied; therefore, the particles exhibit three distinct phases in sequence: (1) elongation of ellipsoidal particles with increasing domain spacing; (2) shape transformation of elongated ellipsoidal particles into accordion-like particles; and (3) disassembly of polymer particles into small spheres. In addition, these particles with SST behavior can be used in light-controlled drug release at a high spatial-temporal resolution, demonstrating their potential in clinical settings and biomedicine.
Topics & Concepts
CopolymerMaterials sciencePolystyreneSelf-assemblyPolymerAqueous solutionNanotechnologyElongationNanoparticleChemical engineeringChemical physicsComposite materialChemistryUltimate tensile strengthEngineeringPhysical chemistryAdvanced Polymer Synthesis and CharacterizationPhotochromic and Fluorescence ChemistryPickering emulsions and particle stabilization