A facile method for purifying DNA-modified small particles and soft materials using aqueous two-phase systems.

We herein report a convenient and effective method for the purification of DNA-conjugated materials with a benchtop minicentrifuge. We demonstrate the fast isolation of DNA-modified small gold nanoparticles (5 nm), liposomes, and DNA nanostructures using fluorescent methods and gel electrophoresis. Our method is cost-effective and efficient and would accelerate the development of DNA nanotechnology.