Enhanced Photoluminescence Emission and Thermal Stability in Pt1Ag31 nanocluster from Introduced Secondary Phosphine Oxide Functionalized ligand

Surface ligands significantly influence the optical properties and stability of metal nanoclusters. In this study, we synthesized [Pt1Ag31(S-Adm)16(DPPM)3(DPPMO)Cl3](SbF6)4 (Pt1Ag31-DPPMO). Compared to [Pt1Ag31(S-Adm)16(DPPM)3Cl3](SbF6)4 (Pt1Ag31), the introduction of secondary phosphine oxide ligand, DPPMO, results in Pt1Ag31-DPPMO exhibiting enhanced photoluminescent properties in both solution and solid states, as well as improved stability and electron-withdrawing ability. This work presents a novel strategy to regulate the properties of metal nanoclusters, especially enhancing photoluminescence performance and stability, through the incorporation of secondary phosphine oxide ligand.