Aryl-bonded silica gel stationary phases with conjugated π-electron system is selective chromomatographic separartion materials. They are suitable for the analysis of medicine, pesticide residue, environment pollutants, biochemical samples and chiral compounds because the aryl ligands are able to interact with the analytes based on dipole-dipole and charge-transfer interactions. Aryl and substituting aryl-bonded phases are an attractive subject in the overlapping area of modern chromatography with applicati...