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The article focuses on developments in chemistry of metallacycles and metallacages through metal-ligand coordination. Topics include approaches for structural chemistry of metallacycles including edge-and face-direct assembly, catenanes and covalent stabilization; functional use of metallacycles such as sensors and catalysis; and chemical reaction showing tetranuclear metallacycles.

The article discusses the importance of metal-organic structural frameworks and self-assembled supramolecular coordination chemical complexes in co-ordination chemistry. It mentions that the structural frameworks are beneficial in study of multicomponent chemical assembly and post self assembly chemical modifications. It mentions that the co-ordination chemistry approach is useful in chemical study involving metal ligands.

The article discusses a study on solar energy supply for the legacy and nonlegacy worlds for an estimated 9.4 billion people by the year 2050. It states that delivering an additional 16 terawatts (TW) is difficult because biomass, nuclear energy, wind energy and other energy sources are insufficient for the increasing global energy consumption. The study noted that sunlight is the preeminent carbon-neutral energy source and that delivering personalized solar energy provides a solution for the world's future energy supply.