as a reducing agent for partial reduction of phosphine oxide groups in poly(4,4′-diphenylphenylphosphine oxide) (PAPO); It can be photopolymerized with methyl methacrylate (MMChemicalbookA) to form poly(MMA) containing SiH groups; Used as a silicon source for the synthesis of crystalline Si nanowires by Au nanonucleus supercritical liquid-solid synthesis.