Highly selective and sensitive colorimetric probes for Yb3+ ions based on supramolecular aggregates assembled from β-cyclodextrin–4,4′-dipyridine inclusion complex modified silver nanoparticles

Abstract

Novel β-cyclodextrin–4,4′-dipyridine supramolecular inclusion complex-modified silver nanoparticles were synthesized for the colorimetric determination of Yb³⁺ ions in aqueous solution with high sensitivity (the visual detection limit was 2 × 10⁻⁷ M), viaYb³⁺-induced aggregation to form chain-like supramolecular aggregates.