Preparation and assembly of SiO2@TiO2 photoresponsive colloidal rings
Xiaoyu Pan1, Huaguang Wang1（王华光）*, Zexin Zhang1,2（张泽新）*
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
2Center for Soft Condensed Matter Physics and Interdisciplinary Research, and Institute for Advanced Study, Soochow University, Suzhou 215123, China
Chem. Commun.,2025, 61, 8663-8666
Abstract: We report the synthesis of SiO2 colloidal rings coated with TiO2, which enable photoresponsive self-assembly into porous ordered structures and hybrid assembly for the capture and release of non-active colloids in a hydrogen peroxide (H2O2) solution. Such assemblies originate from a concentration gradient generated by the TiO2-mediated decomposition of H2O2 under ultraviolet (UV) irradiation. The work provides a straightforward strategy to fabricate active colloids with ring-like shapes for the controlled assembly of open crystalline colloidal materials.
Article information: //doi.org/10.1039/D5CC01902H
