Professor Yang Bingcheng of East China University of Science and Technology successfully created a hydrophilic chromatographic stationary phase by constructing a thin hydrophilic "film" on the surface of highly hydrophobic graphitized carbon microspheres, leveraging the film-forming properties of polyvinyl alcohol (PVA) solutions. The "PVA film" exhibits excellent stability on the graphitized carbon microsphere surface, resisting water and common organic solvents. This method offers advantages such as speed and environmental friendliness, avoiding the harsh reaction conditions involved in traditional chemical modification methods. Furthermore, this method can be extended to prepare stationary phases with different separation modes.
Professor P. K. Dasgupta of the University of Texas at Arlington, a collaborating institution, calculated and estimated the thickness of the PVA film, which is beneficial for subsequent preparation of multilayer films and elucidating its retention mechanism.
This research was published in *Anal. Chem.*
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