“…Solution‐phase synthesis has been shown to be the most efficient way to control the size and shape of metal nanocrystallites, as it offers diverse parameters for tuning the reaction thermodynamics and kinetics, such as solvents, metal precursors and reductants, capping agents, temperatures, and so on. Oleylamine (OAm) has been widely used in the solution‐phase synthesis of 1D metal nanostructures, because of the many roles it may play in nanocrystal growth, for example, as a mild reducing agent, capping agent, soft template through self‐assembly, and coordinating ligand with metal ions …”