Terpyridine-Based, Coordination-Driven, 2D and 3D Supramolecular Architectures
Utilization of < tpy-MII-tpy > (tpy = 2,2':6',2"-terpyridine; M = metal) connectivity to construct specific shaped supramolecular architectures has been recently well-developed. Many transition metals can readily coordinate to terpyridine providing a wide range of bonding strength and properties. A large number of stoichiometrically self-assembled, terpyridine-based, supramolecular architectures have been achieved by using ZnII and CdII ions, which are known as the labile-bonded metals in the < tpy-MII-tpy > connectivity family. In recent years, a series of supramolecular polygons, utilizing < tpy-MII-tpy > connectivity, as the edges, and bisterpyridine ligands, as the vertices, have been synthesized. To explore the formation of higher-ordered 2D- and 3D-supramolecular architectures, multitopic terpyridine ligands must be considered, since each vertex contains at least three branching arms. Multitopic terpyridine ligands, such as tristerpyridine and hexakisterpyridine possessing 60° or 120° directionality, have been successfully synthesized via Suzuki cross-coupling reaction. Various coordination-driven, supramolecular structures, from 2D-based centrally-bridged rhomboid and spoked wheel, to 3D-based tetrahedron and mandoline-shaped architecture, have been quantitatively formed via a facial stoichiometric self-assembly. These novel assemblies will be addressed and their related synthesis, characterization, and properties will also be considered.
Abstracts of Papers of the American Chemical Society
Lu, Xiaocun; Li, Xiaopeng; Moorefield, Charles N.; Wesdemiotis, Chys; and Newkome, George R., "Terpyridine-Based, Coordination-Driven, 2D and 3D Supramolecular Architectures" (2014). Polymer Science Faculty Research. 821.