A highly sensitive and selective colorimetric sensor for the detection of Mn2+ based on supramolecular silver nanoparticle clusters

A highly sensitive and selective colorimetric sensor for the detection of Mn2+ based on the aggregation of functionalized silver nanoparticles (Ag NPs) has been developed. The Ag NPs were decorated with β-cyclodextrin (β-CD) and assembled into clusters with adamantine (ADM). The detection limit for Mn2+ was found to be as low as 5 × 10−7 M.