In order to explore how precursor molecular structure and reactivity will affect the final outcome of the nickel phosphide synthesis, we have used phosphites as phosphorous precursors instead of most commonly used trioctyl phosphine or trioctylphosphine oxide. Triethyl phosphite, trimethyl phosphite, triisopropyl phosphite, tributyl phosphite and triphenyl phosphite were used. We have synthesized nickel phosphide nanocrystals and monitored the reaction over time. We were able to produce different phases of nickel phosphides (Ni2P and Ni12P5) within different time scales depending on the reactivity of the phosphite. They were characterized by UV-Vis absorption, powder x-ray diffraction and transmission electron microscopy. Understanding of how molecular structure affects the chemical reactivity of molecular precursor enables highly predictable and reproducible synthesis of colloidal nanocrystals with specific compositions and properties for precise applications.

Effect of precursor reactivity on nickel phosphide nanocrystal synthesis

249th National Meeting (2015)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.