Azido-Adamantyl Tin Sulfide Clusters for Bioconjugation

We present a new versatile route toward biomolecule-functionalized tin sulfide clusters. A novel bifunctional orthogonal spacer was developed and used for the formation of a trifold azido-adamantyl-terminated cluster, serving as a building block for click reactions. The azido cluster was quantitatively bioconjugated via a strain-promoted 1,3-dipolar cycloaddition, affording a peptide-decorated cluster.