Terpyridine-functionalized TentaGel microbeads: Synthesis, metal chelation and first sequential complexation

Schubert, Ulrich S.; Alexeev, Alexander; Andres, Philip R.

Abstract:

The functionalization of polystyrene/poly- (ethylene glycol) TentaGel1 microbeads (d=20 mm) with 2,2':6',2''-terpyridine units is described resulting in a material with easily accessible ligands which possess an excellent affinity for transition metal ions. The subsequent loading with different metal ions via metal-to-ligand complexation yielded the corresponding CoII, NiII, FeII, and CuII modified beads. The isolated materials were investigated in detail utilizing UV/vis spectroscopy, optical microscopy, atomic absorption spectroscopy (AAS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Moreover, grafting of free terpyridine moieties via ruthenium(II)/ ruthenium(III)-chemistry onto the beads is demonstrated. This opens-up new pathways for the selective modification of such microbeads and the preparation of functional materials.

Year:

2003

Type of Publication:

Article

Keywords:

chelating resin; microbeads; supramolecular structures; terpyridine; transition metal chemistry

Journal:

Molecular Materials and Engineering

Volume:

288

Pages:

852 – 860