Abstract
Abstract Self-assembly, which occurs through noncovalent interactions among molecules, is a ubiquitous phenomenon in the natural world. Light is a particularly attractive stimulus for manipulating self-assembled structures due to its precise and noninvasive nature. Photoresponsive ruthenium (Ru) complexes are emerging as promising candidates for controlling self-assembly due to their unique coordination chemistry and reversible light-triggered behavior. Specifically, Ru complexes can undergo photodissociation of their ligands in aqueous solutions, leading to the formation of Ru-H2O species, and this process can be used to control the disassembly of assembled structures upon illumination. Conversely, upon cessation of the light stimulus, some Ru–ligand coordination bonds can be restored, resulting in reassembly of the structures. Herein, we mainly introduce our recent progress in the use of Ru(Ⅱ) complexes to create photocontrolled self-assemblies with applications ranging from cancer therapy to the manipulation of the morphology and properties of nanoscale materials. Finally, we discuss the challenges and future directions of photocontrolled assemblies with Ru complexes.
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