The article provides a comprehensive analysis of photoluminescence (PL) emission in atomically precise d10 metal nanoclusters, with a focus on Cu(I) nanoclusters. It highlights the intricate relationship between the structural architecture of these nanoclusters and their luminescent properties. The study explores the impact of ligand choice, Cu oxidation states, and structural modifications on the emission characteristics. Key findings include the influence of ligands on cuprophilic interactions, the role of Cu(0) centers in electronic transitions, and the importance of defect-induced structural changes in enhancing emission properties. The article also discusses the challenges and future directions in the field, emphasizing the need for further research to understand and control the emission behavior of Cu nanoclusters.The article provides a comprehensive analysis of photoluminescence (PL) emission in atomically precise d10 metal nanoclusters, with a focus on Cu(I) nanoclusters. It highlights the intricate relationship between the structural architecture of these nanoclusters and their luminescent properties. The study explores the impact of ligand choice, Cu oxidation states, and structural modifications on the emission characteristics. Key findings include the influence of ligands on cuprophilic interactions, the role of Cu(0) centers in electronic transitions, and the importance of defect-induced structural changes in enhancing emission properties. The article also discusses the challenges and future directions in the field, emphasizing the need for further research to understand and control the emission behavior of Cu nanoclusters.