The selective binding character of a molecular imprinted particle for Bisphenol A from water

The hydroxy groups of BPA can form two strong hydrogen bonds with the oxygen atom of carboxyl groups (the dihedral angles of O-H-O were both about 180°). TBBPA and PSP also can form two hydrogen bonds with the imprinted sites, but their dihedral angles of O-H-O are less than 180°, therefore the affinity were smaller than BPA-MIP for BPA. Phenol only forms one hydrogen bond (its angles of O-H-O was about 180°), so the binding ability was weaker than BPA-MIP for BPA. 163