Self‐Assembly of Conjugated Units Using Metal‐Terpyridine Coordination

Abstract

Due to their inherently dynamic natures and fascinating photoluminescent/photoelectronic properties, coordination compounds of metal ions and conjugated terpyridine ligands have attracted considerable attention as functional materials for a variety of potential applications. In this feature article, a summary of recent work toward the development of one- (1D), two- (2D), and three-dimensional (3D) supramolecular polymers, networks, and metallomacrocycles based on zinc metal ion coordination of conjugated units bearing terpyridine ligands is presented, and it is shown how it fits within the overall framework of work in this field. Here, a sequential study from terpyridines as basic building blocks to their zinc-coordinated supramolecular 1D polymers, 2D macrocycles, and 2D and 3D networks is developed. These networks are compared with respect to their thermal stabilities, molecular organization, and linear and nonlinear optical properties. This work opens new prospects for the development of supramolecular chemistry of terpyridines and other transition metal ions, and also their application in future optoelectronic devices.

Assembling mono-, di- and tri-nuclear coordination complexes with a ditopic analogue of 2,2′:6′,2′′-terpyridine: syntheses, structures and catalytic studies

“…30b More recently, we observed that mononuclear copper(II) chelate of 4'-Cl-2,2':6',2''tpy exhibited good catalytic activity toward the oxidation of benzylic alcohol, while the novel mixed-valence Cu(I)Cu(II) assemblies, isolated serendipitously from the TEMPO-mediated reactions during metal complexation, were much better catalysts for the same reaction. Thus, 80% conversion of benzylic alcohol into benzaldehyde was detected in the case of catalyst 6 (entries [5][6][7][8]. Initially, we chose the copper(II) and cobalt(II) complexes 1, 4, 5 and 6 (1 mol% based on L) as catalysts for the oxidation of benzylic alcohol in the presence of TEMPO (5 mol%) in the air.…”

“…1 The rich coordination chemistry of this type of ligand was pioneered by the Constable and Housecroft group 2 and has inspired widespread applications of the metal chelates of 2,2':6', 2''-tpy and its derivatives in crystal engineering 1,3 , catalysis 4 and materials [5][6][7][8][9] including medicinal, optoelectronic, magnetic and nano-materials over the past decades. 1 The rich coordination chemistry of this type of ligand was pioneered by the Constable and Housecroft group 2 and has inspired widespread applications of the metal chelates of 2,2':6', 2''-tpy and its derivatives in crystal engineering 1,3 , catalysis 4 and materials [5][6][7][8][9] including medicinal, optoelectronic, magnetic and nano-materials over the past decades.…”

Metallo-Terpyridine-Modified Cellulose Nanofiber Membranes for Papermaking Wastewater Purification

“…Different polymeric architectures (dendrimers, hyperbranched, and linear) containing or based on terpyridine have been published [1][2][3]. Whereas there are a large number of publications concerned with polymers bearing different terpyridine ligands, the preparation of the first, terpyridine-modified, cellulose polymer was reported during 2012 in Professor Newkome' laboratories at the University of Akron through his collaboration with our group at the National Research Centre in Egypt.…”

Two polymorphs of 4-(4-hexyloxyphenyl)-2,6-di(pyrazin-2-yl)pyridine and the crystal structure of its copper(II) complex

“…2,2':6',2''-Terpyridine (2,2':6',2''-tpy) is a convergent tridentate ligand that contains an ideal N 3 binding cavity for metal ions [1]. Therefore, since its observation it and its 4'-substituted derivatives have been extensively explored for the construction of both small molecular coordination complexes and extended metallosupramolecules, which have found tremendous applications in host-guest chemistry, molecular recognition and sensing, luminescent and magnetic materials, and catalysis [2][3][4][5][6][7][8][9]. 2,6-di(pyrazin-2-yl)pyridine (L) containing a similar heterotricyclic moiety is structurally analogous to 2,2':6',2''-tpy, yet it bears two additional N © 2016.…”