Executive Summary : | Multicomponent self-assembly is a strategy that allows for greater control over the design of 2D and 3D architectures, allowing for the creation of novel molecular materials with unusual sensing, optical, and catalytic properties. This research field of supramolecular chemistry offers limitless possibilities for scientists and researchers investigating biomolecule structure and function. Mn(I)/Re(I)-based compounds have numerous advantageous applications, leading to the development of high-order molecular synthesis to create novel metallacyclophanes. These metallacyclophanes are expected to have applications in medicine, biology, molecular recognition, sensor technology, molecular switching materials, photophysical, and photoluminescence applications. The proposed 3D metallacyclophanes have interesting sensing, optical, and biological properties, apart from their structural beauty. The construction of metallacages can be accomplished through multicomponent self-assembly of a multidentate ligand (L), tris-chelating bridging ligand (L'), and an octahedral metal core (M), without using any template. Carbon monoxide (CO) is an important messenger molecule in mammals with physiological significance and potential as a therapeutic agent. However, the application of CO as a therapeutic agent is still in its infancy due to the technical challenge of delivering gaseous CO to specific locations with control over dosage and timing. |