High‐Precision Construction of Colloidal Superstructures through Cucurbit[n]Uril‐Mediated Self‐Assembly

Abstract In the past decades, colloid research has experienced significant growth across various scientific disciplines. This review explores recent advancements in the design and fabrication of cucurbit[n]urils (CB[n])‐mediated self‐assembly for colloids with advanced structures. CB[n], a class of macrocyclic molecules known for their distinctive host–guest interactions, plays a crucial role in synthesizing colloidal superstructures due to their ability to form stable complexes with a wide range of guest molecules. This review provides a comprehensive summary of recent advances in CB[n]‐mediated self‐assembly strategies for constructing diverse colloidal architectures. These assemblies are systematically categorized into distinct types, including colloidal clusters, 1D colloidal chains, raspberry‐like colloids, core–shell colloids, and colloidosomes. While the primary emphasis is placed on construction methodologies, the potential applications of these superstructures are also briefly highlighted in areas such as drug delivery, catalysis, and sensing, to illustrate their relevance in the development of functional materials. By examining the synthesis methods and potential applications, this review underscores the versatility and adaptability of CB[n]‐mediated colloidal systems and their potential to drive future innovations in colloid science.