Combinatorial approach to selective multivalent ion pairing in mixed aqueous-organic media using bead-supported libraries of unnatural polyamines.

Abstract

[structure: see text] Screening of a bead-supported encoded library of unnatural polyamines against model polyanionic targets (1 and 2) demonstrated that a combinatorial approach can highlight structural selectivity in multivalent ion pairing in aqueous solutions. This approach even provided -NH-2Acc(R)-6Ahx(R)-Et, a highly target-selective triamine sequence that can discriminate between two trisulfonated dyes displaying subtle structural differences.