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

Novel beta-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 x 10(-7) M), via Yb3+-induced aggregation to form chain-like supramolecular aggregates.