Dynamic and static quenching of fluorescence by 1-4 nm diameter gold monolayer-protected clusters

The way in which the efficiency of molecular quenching by Au nanoparticles depends on nanoparticle size is reported for dynamic and static quenching of fluorescence. The results for both the sets of monolayer-protected Au clusters (MPCs) have revealed a clear increase in quenching efficiency at increased MPC core size.