Functionalization of polymer‐supported pentaerythritol as a general synthesis for the preparation of ion‐binding polymers

Abstract

Pentaerythritol bonded to cross-linked poly(vinylbenzyl chloride) beads (PE) provides a scaffold onto which ligands can be attached by reaction with reactive compounds such as phosphoryl halides. To broaden the applicability of PE for the preparation of ion-selective polymers, conditions are reported for the conversion of the hydroxyl group to the bromide, which acts as a better leaving group. The ACH 2 Br moiety thus provides a handle on which an array of ligands can be bound through nucleophilic substitution. In this first in a series of reports, immobilization of diethylamine onto the PE and the ion-binding affinities of the resulting polymer are described.

Polymer-Supported Aminomethylphosphinate as a Ligand with a High Affinity for U(VI) from Phosphoric Acid Solutions: Combining Variables to Optimize Ligand–Ion Communication

“…Phosphorus and nitrogen elemental analyses, [5] along with acid capacities via titration, [6] quantify the functional group capacities. The primary amine reaction with potassium phthalimide gives a polymer with a nitrogen capacity of 5.07 mmol/g and an acid capacity of 4.78 mmol/g.…”