Issue 8, 2016

Tunable lanthanide-directed metallosupramolecular networks by exploiting coordinative flexibility through ligand stoichiometry

Abstract

We report the self-assembly of multi-component lanthanide coordination metallosupramolecular structures on a Au(111) surface. Eu atoms coordinate with two heterotypic ligands of quarterphenyl-4,4′′-dicarbonitrile and 4′,4′′′′-(1,4-phenylene)bis(2,2′:6′,2′′-terpyridine). For carbonitrile ligand : terpyridyl stoichiometric ratios of 0.7, Eu atoms are primarily ligated in a four-fold coordination scheme. By increasing the carbonitrile ligand to reach a stoichiometry of 1.8, Eu atoms are ligated now in a five-fold coordination sphere. Two types of coordination schemes result in structures exhibiting one-dimensional and two-dimensional morphologies, respectively. This study demonstrates that the flexible lanthanide coordination sphere facilitates the rational design of metallosupramolecular architectures.

Graphical abstract: Tunable lanthanide-directed metallosupramolecular networks by exploiting coordinative flexibility through ligand stoichiometry

Article information

Article type
Communication
Submitted
14 Oct 2015
Accepted
19 Nov 2015
First published
19 Nov 2015

Chem. Commun., 2016,52, 1618-1621

Author version available

Tunable lanthanide-directed metallosupramolecular networks by exploiting coordinative flexibility through ligand stoichiometry

G. Lyu, Q. Zhang, J. I. Urgel, G. Kuang, W. Auwärter, D. Ecija, J. V. Barth and N. Lin, Chem. Commun., 2016, 52, 1618 DOI: 10.1039/C5CC08526H

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