1995 Volume 11 Issue 5 Pages 739-742
Linear polystyrene, having a trimethoxysilyl group at one side of the terminal group, was newly synthesized and readily grafted onto porous silica gels using the terminal reactive group. Its packed column showed good selectivity based on the π-π interaction for polyaromatics as well as the usual reversed-phase mode separation for alkyl compounds. The elution behavior (including the elution order) agreed with those that were observed in non-silica-supported poly(styrene- divinylbenzene) spherical particles. However, the asymmetric factor (As) of the elution peaks for polyaromatics was much better in silica-supported polystyrene than in non-supported polystyrene; for example, the values of As for triphenylene were 1.4 and 4.7, respectively. This difference is attributable to the flexibility of the polystyrene chain.
