The synthesis of size-monodispersed indium nanoparticles via an innovative simultaneous phase transfer and ripening method is reported. The formation
of nanoparticles occurs in a one-step process instead of well-known two-step phase transfer approaches. The
synthesis involves the reduction of InCl3 with LiBH4 at ambient temperature and although the reduction occurs
at room temperature, fine indium nanoparticles, with a mean diameter of 6.4 ± 0.4 nm, were obtained directly in non-polar n-dodecane. The direct synthesis of
indium nanoparticles in n-dodecane facilitates their fast formation and enhances their size-monodispersity. In
addition, the nanoparticles were highly stable for more than 2 months. The nanoparticles were characterised by
dynamic light scattering (DLS), small angle X-ray scattering (SAXS), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS)
and Fourier transform infrared (FT-IR) spectroscopy to determine their morphology, structure and phase purity.