Polymer Science Faculty Research

Title

Terpyridine-Based, Coordination-Driven, 2D and 3D Supramolecular Architectures

Document Type

Conference Proceeding

Publication Date

Spring 3-16-2014

Abstract

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.

Publication Title

Abstracts of Papers of the American Chemical Society

Volume

247

Issue

84-pmse