Vinylization of GO by p-aminostyrene was controllable and purifiable.

Vinylized GO was first covalently bonded with the polystyrene monolith via in-situ one-step copolymerization.

Investigations of EOF affected by electrolyte concentration and pH, acetonitrile composition and applied voltage demonstrated a stable EOF of nonlinear electrokinetics in a wide pH range.

Minute alteration by pH, good stability and long usage time was ascribed by the polystyrene-based material.