A new high-capacity metal ion-complexing gel containing cyclen ligands?

RSC Advances Pub Date: 2016-02-26 DOI: 10.1039/C6RA00604C

Abstract

We describe a new polymeric hydrogel that binds divalent metal ions with large binding constants and capacity. A new acrylate monomer with the pendant cyclen, tri-tert-butyl-10-(2-(2-(2-(methacryloyloxy)ethoxy)ethoxy)-2-oxoethyl)-1,4,7,10-tetraazacyclododecane-1,4,7-tricarboxylate, was polymerised by RAFT to a roughly spherical 5–9 unit oligomer bearing a carboxylate-functionalised end-group. This was de-protected and coupled to an amine dendrimer then crosslinked into a nylon-type hydrogel capable of absorbing more than 10 wt% copper ions.

Graphical abstract: A new high-capacity metal ion-complexing gel containing cyclen ligands
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