Structural Modifications to Fine Tune the Redox Characteristics of Catenane

ABSTRACT Catenanes, an intriguing class of mechanically interlocked molecules (MIMs), have garnered substantial attention due to their dynamic redox‐responsive behaviors and unique topological architectures. The interlocked nature of these systems allows precise control of molecular motion under electrochemical stimuli, which is valuable in designing molecular machines and devices. This review highlights contemporary advancements in the structural modification of catenanes to fine‐tune their redox properties. Emphasis is placed on how changes in substitution patterns, coordination environments, and macrocyclic components curb redox behavior and facilitate reversible molecular switching. By integrating insights from both metal‐containing and metal‐free systems, we outline strategies for developing responsive catenane architectures with potential applications in molecular electronics, sensors, and nanomechanical devices.